Tag Archives: cannabinoid

extractiongraphic

The Four Pillars of Cannabis Processing

By Christian Sweeney
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extractiongraphic

Cannabis extraction has been used as a broad term for what can best be described as cannabis processing. A well-thought-out cannabis process goes far beyond just extraction, largely overlapping with cultivation on the front-end and product development on the back-end1. With this in mind, four pillars emerge as crucial capabilities for developing a cannabis process: Cultivation, Extraction, Analytics and Biochemistry.

The purpose and value of each pillar on their own is clear, but it is only when combined that each pillar can be optimized to provide their full capacities in a well-designed process. As such, it is best to define the goals of each pillar alone, and then explain how they synergize with each other.

At the intersection of each pillar, specific technology platforms exist that can effectively drive an innovation and discovery cycle towards the development of ideal products.Cultivation is the foundation of any horticultural process, including cannabis production. Whether the goal be to convert pigments, flavors or bioactive compounds into a usable form, a natural process should only utilize what is provided by the raw material, in this case cannabis flower. That means cultivation offers a molecular feedstock for our process, and depending on our end goals there are many requirements we may consider. These requirements start as simply as mass yield. Various metrics that can be used here include mass yield per square foot or per light. Taken further, this yield may be expressed based not only on mass, but the cannabinoid content of the plants grown. This could give rise to a metric like CBD or THC yield per square foot and may be more representative of a successful grow. Furthermore, as scientists work to learn more about how individual cannabinoids and their combinations interact with the human body, cultivators will prioritize identifying cultivars that provide unique ratios of cannabinoids and other bioactive compounds consistently. Research into the synergistic effect of terpenes with cannabinoids suggests that terpene content should be another goal of cultivation2. Finally, and most importantly, it is crucial that cultivation provide clean and safe materials downstream. This means cannabis flower free of pesticides, microbial growth, heavy metals and other contaminants.

Extraction is best described as the conversion of target molecules in cannabis raw material to a usable form. Which molecules those are depends on the goals of your product. This ranges from an extract containing only a pure, isolated cannabinoid like CBD, to an extract containing more than 100 cannabinoids and terpenes in a predictable ratio. There are countless approaches to take in terms of equipment and process optimization in this space so it is paramount to identify which is the best fit for the end-product1. While each extraction process has unique pros and cons, the tunability of supercritical carbon dioxide provides a flexibility in extraction capabilities unlike any other method. This allows the operator to use a single extractor to create extracts that meet the needs of various product applications.

Analytics provide a feedback loop at every stage of cannabis production. Analytics may include gas chromatography methods for terpene content3 or liquid chromatography methods for cannabinoids 3, 4, 5. Analytical methods should be specific, precise and accurate. In an ideal world, they can identify the compounds and their concentrations in a cannabis product. Analytics are a pillar of their own due simply to the efforts required to ensure the quality and reliability of results provided as well as ongoing optimization of methods to provide more sensitive and useful results. That said, analytics are only truly harnessed when paired with the other three pillars.

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Figure 1: When harnessed together the pillars of cannabis processing provide platforms of research and investigation that drive the development of world class products.

Biochemistry can be split into two primary focuses. Plant biochemistry focuses back towards cultivation and enables a cannabis scientist to understand the complicated pathways that give rise to unique ratios of bioactive molecules in the plant. Human biochemistry centers on how those bioactive molecules interact with the human endocannabinoid system, as well as how different routes of administration may affect the pharmacokinetic delivery of those active molecules.

Each of the pillars require technical expertise and resources to build, but once established they can be a source of constant innovation. Fig. 1 above shows how each of these pillars are connected. At the intersection of each pillar, specific technology platforms exist that can effectively drive an innovation and discovery cycle towards the development of ideal products.

For example, at the intersection of analytics and cultivation I can develop raw material specifications. This sorely needed quality measure could ensure consistencies in things like cannabinoid content and terpene profiles, more critically they can ensure that the raw material to be processed is free of contamination. Additionally, analytics can provide feedback as I adjust variables in my extraction process resulting in optimized methods. Without analytics I am forced to use very rudimentary methods, such as mass yield, to monitor my process. Mass alone tells me how much crude oil is extracted, but says nothing about the purity or efficiency of my extraction process. By applying plant biochemistry to my cultivation through the use of analytics I could start hunting for specific phenotypes within cultivars that provide elevated levels of specific cannabinoids like CBC or THCV. Taken further, technologies like tissue culturing could rapidly iterate this hunting process6. Certainly, one of the most compelling aspects of cannabinoid therapeutics is the ability to harness the unique polypharmacology of various cannabis cultivars where multiple bioactive compounds are acting on multiple targets7. To eschew the more traditional “silver bullet” pharmaceutical approach a firm understanding of both human and plant biochemistry tied directly to well characterized and consistently processed extracts is required. When all of these pillars are joined effectively we can fully characterize our unique cannabis raw material with targeted cannabinoid and terpene ratios, optimize an extraction process to ensure no loss of desirable bioactive compounds, compare our extracted product back to its source and ensure we are delivering a safe, consistent, “nature identical” extract to use in products with predictable efficacies.

Using these tools, we can confidently set about the task of processing safe, reliable and well characterized cannabis extracts for the development of world class products.


[1] Sweeney, C. “Goal-Oriented Extraction Processes.” Cannabis Science and Technology, vol 1, 2018, pp 54-57.

[2] Russo, E. B. “Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects.” British Journal of Pharmacology, vol. 163, no. 7, 2011, pp. 1344–1364.

[3] Giese, Matthew W., et al. “Method for the Analysis of Cannabinoids and Terpenes in Cannabis.” Journal of AOAC International, vol. 98, no. 6, 2015, pp. 1503–1522.

[4] Gul W., et al. “Determination of 11 Cannabinoids in Biomass and Extracts of Different Varieties of Cannabis Using high-Performance Liquid Chromatography.” Journal of AOAC International, vol. 98, 2015, pp. 1523-1528.

[5] Mudge, E. M., et al. “Leaner and Greener Analysis of Cannabinoids.” Analytical and Bioanalytical Chemistry, vol. 409, 2017, pp. 3153-3163.

[6] Biros, A. G., Jones, H. “Applications for Tissue Culture in Cannabis Growing: Part 1.” Cannabis Industry Journal, 13 Apr. 2017, www.cannabisindustryjournal.com/feature_article/applications-for-tissue-culture-in-cannabis-growing-part-1/.

[7] Brodie, James S., et al. “Polypharmacology Shakes Hands with Complex Aetiopathology.” Trends in Pharmacological Sciences, vol. 36, no. 12, 2015, pp. 802–821.

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Epidiolex Gives GW Pharmaceuticals Boost In Global Markets

By Marguerite Arnold
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Epidiolex-GW

GW Pharmaceuticals scored a significant victory in the United States with its cannabis-based epilepsy drug Epidiolex in mid-April. The company received approval from a U.S. Food and Drug Administration (FDA) panel for its use in treating two forms of drug-resistant epilepsy.

The drug was granted “orphan drug” status in the EU a year ago.Will this be enough to move the conversation forward about cannabis as medicine in the United States? 

So what does the future hold for this drug and a company, which has visited this space before? Remember Sativex?. The Company now faces real competition from a raft of companies moving into this space from just about everywhere – both from Canada and of course Europe itself.

The FDA Might be on the Verge of Approving its First Cannabis-Based Drug

It is not like this is either the FDA’s or GW Pharma’s first discussion about the medical efficacy of cannabinoids. Sativex, a mouth spray containing THC, was never granted approval in the United States for the treatment of MS – although it received such approvals in Europe.

Epidiolex-GWIf the FDA approves Epidiolex (made from CBD), it will be the first cannabinoid-based drug approved in the United States by the federal agency.

Will this be enough to move the conversation forward about cannabis as medicine in the United States? What will happen in the EU?

A Divergent and Highly Different Drug Market

Will the FDA finally approve at least one form of a CBD-based drug? The chances are that Epidiolex might finally move the agency to approve. However,this is not, despite the hype that the company has made in the press about this, the first cannabinoid-based drug to be approved in the United States. It might be, however, the first drug based on actual natural cannabinoids rather than synthetic ones that it approves for some purpose. Both Cesamet and Dronabinol (or Marinol) are synthetic cannabinoid drugs approved for several conditions from chronic pain caused by chemo to Parkinson’s.

GW logo-2But those who are hoping that this drug approval might open the floodgates at the FDA for startersshould take a pew. While Sativex was not approved in the United States, it was made available after 2011 for MS patients, particularly in Germany, which has the highest rate of MS of any European country. The problem? It was just too expensive for most people to afford – since their insurance would not cover it. And doctors were even more resistant to prescribing than they are now. So even getting a prescription was almost impossible.

That conversation was different in Europe post-2013, and there were people who managed to get a doctor to write a prescription not to mention afford the eye-watering prices sans insurance coverage.

That said, given the choice between whole plant meds, most people still prefer bud cannabis to the spray variety. And in Europe right now, that is what is on the table.

What Will This Mean in the US vs Europe?

In the US, the first thing that FDA approval will mean is drug sales for only one branded drug. That is the cynicism at play here. Furthermore, it also neatly dodges the THC issue.

In Europe? Particularly Germany? This development is not likely to make much of a dent. GW is competing with every single Canadian producer with flower-based oil – and on both the medical and non-medical CBD front. That also now includes local producers. Further, this is a market which prizes genericized drugs over name brands. In France, the distribution of Sativex was held up, primarily because of the row over cost. And who would pay.

It is also unlikely that the FDA approval in the United States will change the discussion either in the US on a federal level – or in Europe.

The most important place this news already made a dent? GW Pharma’s stock price – at least temporarily. It is also a spot of good news the company really needs. In February, the company’s GWP42006 drug designed for focal seizures (drug resistant epilepsy) failed to outperform placebo results and wiped 5% off the company’s stock.

german flag

German Court Stops Pending Cannabis Cultivation Bid On Technical Fault

By Marguerite Arnold
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german flag

In a move that seems to shed more doubt than certainty on domestic cannabis cultivation and the date that it will start auf Deutschland, the Higher Regional Court (or OLG) in Dusseldorf formally stopped the pending bid procedure for the first crop on March 28th. BfArM, the federal agency in charge of regulating all narcotic drugs, initiated that procurement bid. The tender bid was launched after the German Parliament and federal legislators changed the law last year to mandate that cannabis be available via prescription, and further that public health insurers were required to cover it.

That bid announcement was supposed to come as early as last September. Criticisms about the process and requirements began immediately thereafter. For starters, the bid’s requirements excluded all German-only respondents to the bid and left both Canadian and Israeli firms in the front positions to obtain these valuable licenses. However, there were other gripes, including the fact that the amount of cannabis requested (about 6.6 tonnes) was far too low to even begin to meet real demand. Namely, there are easily 1 million German patients who could qualify for the drug.

In the space of the last year, in fact, the number of “official” German cannabinoid patients has shot up from 1,000 to about 15,000. That said, the top three covering insurers also report a mere 64% approval rate. This means that there are more doctors writing prescriptions than insurers are covering.

That, at least for patients and their advocates is a bit of good news despite the blow that any delay in domestic production has created. Doctor resistance to prescribing cannabinoids even when there are no other alternatives has been used as an excuse in many media reports for the speed of market development. That clearly is not true. The attitude on the ground in Deutschland is rapidly changing.

That bid announcement was supposed to come as early as last September. At that point, however,the agency was then forced to extend the response date, which it did, but apparently not for long enough.

Throughout the fall, it was impossible to understand, from any direction, what was going on. Four lawsuits against the bid were launched around September, each with differing complaints that ranged from criticizing the agency for the lack of extension and response time to monopolistic business practices.

The OLG dismissed all but the criticism about the extension.what this decision has done most clearly is slowed down the production of domestically grown medical cannabinoids

The one clear thing to come out of Düsseldorf? BfArM has been banned from awarding its contract to anyone to produce medical cannabis in Germany starting in 2019. The first letters to bid finalists announcing the bid had been canceledbegan arriving the day after the court’s decision.

Reading Between the Lines

There have been rumors since last fall that the bid would end up in such waters. However,all the major producers widely suspected to have applied for the bid also began announcing themselves as finalists in press releases. For this reason, the official line from everyone that the bid was still, in fact, on track.

Nobody could understand why anyone would want or even be able to halt the production of direly needed, locally sourced, high-gradecannabis. That includes BfArM, which made an impassioned response, via their attorney to the OLG in Dusseldorf. Attorney Heike Dahs warned the court that any interruption of the bid was “very bad for the care of patients.”  He was similarly pessimistic about the ability to begin production domestically by the previously set 2019 deadline.

In fact, what this decision has done most clearly is slowed down the production of domestically grown medical cannabinoids (although potentially not by much) while giving officials at BfArM a rather nasty black eye that might yet lead to further legal action.

It also means that there will be another bid process. In the meantime, the ex-im market is, if anything, taking off.

This is a Shock And Opportunity – but not a Surprise

No matter the opinionated emails and IM’ing going on in several languages all over the world right now about the implications legally in the future, the major producers are all taking this in stride. And appear to be well positioned to respond.

According to Dr. Pierre Debs, the managing director of Spektrum Cannabis (the global medical brand of Canopy and based just south of Frankfurt), who responded to CannabisIndustryJournal a day after the court decision, the company is not affected by this development. “Spektrum has a steady and constant supply and we do not anticipate any problems supplying patients through their pharmacies,” he says. Debs received the first German medical import license to bring Canadian cannabis into the country a mere two years ago and has continued to carve a leading path in the discussion across Europe. “In addition to our supply from Canopy Growth Corp, our partnership supply agreement with Alcaliber in Spain will see Spektrum importing sun-grown medical cannabis products starting towards the end of the summer,” says Debs.

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Dr. Pierre Debs, managing director of Spektrum Cannabis
Photo: ICBC, Berlin

But it is not just the big guys in the mix anymore. And there are many who see opportunityto a situation, which is frustrating.“As the second-largest country by population in Europe and a leader within the EU, the German market represents a new frontier for the cannabis industry in general in the region,” says Zlatko Keskovski, chief executive officer of NYSK Holdings, a Macedonian firm now in its second harvest of GMP-certified cannabis and holding EU export rights.

For such firms, even though NYSK is a surprise entrant to the conversation this year and outside the EU, the current situation represents an unbelievable chance to enter a market literally starving for qualifiedproduct. The firm is currently looking for German distributors who cannot access medical grade cannabinoids via other routes including attending the ICBC in Berlin in April. “This year’s ICBC looks to be a seminal moment for NYSK,” says Keskovski. “We have taken the appropriate steps to ensure our high-quality standards have led to products that our customers, and eventually patients, can rely on. We look forward to the chance to showcase our achievements that we’ve worked so hard for. The ICBC will also present us with the opportunity to meet with potential distributors and future partners.”

German Patients are Going to be on the Front Lines of This Discussion

The difficulties that German patients have already faced in obtaining a drug that is now legal in their own country for medical use (and even for recreational purposes across an open border in Holland) are legion. While to a certain extent, German patients are in the same boat as patients elsewhere and their problems, in fact, there are still huge access issues that remain. For starters, the drug is much more expensive here, so those without health insurance approval face bills of about $3,000 per month. Why the eye-watering price? All medical grade cannabis is still imported, although increasingly this is now just via other EU countries, not just from Canada.

“One of the reasons we organized the national German Patient Roundtable is to give patients a voice in all of this supply and demand discussion and to help BfArM and others formulate workable solutions for all,” responded Philip Cenedella IV when reached for a response by CIJ. Cenedella, an American expat and the organizer of the Roundtable, a nationally focussed, umbrella group that is kicking off its campaign this year, spoke for many who are far from court and boardrooms where the decisions are being made.

Philip Cenedella
Philip Cenedella, pictured left, at the Deutsche Hanfverband (DHV) conference in Berlin last November.
Photo: @MedPayRx, Instagram

“While there are very talented firms who will now take up this discussion with the government and reissue a response for the tender, what we continue to see on the ground is that patients simply do not have the access granted them in the law which was passed over a year ago,” Cenedella says, with more than a note of frustration. “We again are calling on all government officials, industry executives and patient advocates to band together to immediately establish workable protocols that directly help the patients.”

Indeed, despite the frustration and delay, if not new costs and opportunities that this decision creates, one thing is very clear on the ground here. The current status quo is unacceptable. That alone should also put pressure on the powers that be to remedy the situation as quickly as possible. And via several routes, including widening import quotas or even issuing new licenses as a new solution to domestic cultivation is implemented.

“Patients are not being served and do not have access to a medicine that has been proven to improve lives,” says Cenedella. “Our simple request is for BfArM to finally invite patients into their discussions, to work with patients to formulate workable cultivation and distribution solutions, and we humbly request that this happen now before they go down another dead-end road, ending in another court defeat, and resulting in even more delays to the patients that are still lacking the care afforded them by the German Federal Court’s decision of 2017.”

oregon

Turning the Oregon Outdoor Market into a Research Opportunity

By Dr. Zacariah Hildenbrand, Dr. Kevin A. Schug
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oregon

Much has been made about the plummeting market value of cannabis grown outdoors in Oregon. This certainly isn’t a reflection of the product quality within the marketplace, but more closely attributable to the oversaturation of producers in this space. This phenomenon has similarities to that of ‘Tulip Mania’ within the Dutch Golden Age, whereby tulip bulbs were highly coveted assets one day, and almost worthless the next. During times like these, it is very easy for industry professionals to become disheartened; however, from a scientific perspective, this current era in Oregon represents a tremendous opportunity for discovery and fundamental research.

Dr. Zacariah Hildenbrand
Dr. Zacariah Hildenbrand, chief technical officer at Inform Environmental.

As we have mentioned in previous presentations and commentaries, our research group is interested in exploring the breadth of chemical constituents expressed in cannabis to discover novel molecules, to ultimately develop targeted therapies for a wide range of illnesses. Intrinsically, this research has significant societal implications, in addition to the potential financial benefits that can result from scientific discovery and the development of intellectual property. While conducting our experiments out of Arlington, Texas, where the study of cannabis is highly restricted, we have resorted to the closet genetic relative of cannabis, hops (Humulus lupulus), as a surrogate model of many of our experiments (Leghissa et al., 2018a). In doing so, we have developed a number of unique methods for the characterization of various cannabinoids and their metabolites (Leghissa et al., 2018b; Leghissa et al., 2018c). These experiments have been interesting and insightful; however, they pale in comparison to the research that could be done if we had unimpeded access to diverse strains of cannabis, as are present in Oregon. For example, gas chromatography-vacuum ultraviolet spectroscopy (GC-VUV) is a relatively new tool that has recently been proven to be an analytical powerhouse for the differentiation of various classes of terpene molecules (Qiu et al., 2017). In Arlington, TX, we have three such GC-VUV instruments at our disposal, more than any other research institution in the world, but we do not have access to appropriate samples for application of this technology. Similarly, on-line supercritical fluid extraction – supercritical fluid chromatography – mass spectrometry (SFE-SFC-MS) is another capability currently almost unique to our research group. Such an instrument exhibits extreme sensitivity, supports in situ extraction and analysis, and has a wide application range for potential determination of terpenes, cannabinoids, pesticides and other chemical compounds of interest on a single analytical platform. Efforts are needed to explore the power and use of this technology, but they are impeded based on current regulations.

Dr Kevin Schug
Dr. Kevin A. Schug, Professor and the Shimadzu Distinguished Professor of Analytical Chemistry in the Department of Chemistry and Biochemistry at The University of Texas at Arlington (UTA)

Circling back, let’s consider the opportunities that lie within the abundance of available outdoor-grown cannabis in Oregon. Cannabis is extremely responsive to environmental conditions (i.e., lighting, water quality, nutrients, exposure to pest, etc.) with respect to cannabinoid and terpene expression. As such, outdoor-grown cannabis, despite the reduced market value, is incredibly unique from indoor-grown cannabis in terms of the spectrum of light to which it is exposed. Indoor lighting technologies have come a long way; full-spectrum LED systems can closely emulate the spectral distribution of photon usage in plants, also known as the McCree curve. Nonetheless, this is emulation and nothing is ever quite like the real thing (i.e., the Sun). This is to say that indoor lighting can certainly produce highly potent cannabis, which exhibits an incredibly robust cannabinoid/terpene profile; however, one also has to imagine that such lighting technologies are still missing numerous spectral wavelengths that, in a nascent field of study, could be triggering the expression of unknown molecules with unknown physiological functions in the human body. Herein lies the opportunity. If we can tap into the inherently collaborative nature of the cannabis industry, we can start analyzing unique plants, having been grown in unique environments, using unique instruments in a facilitative setting, to ultimately discover the medicine of the future. Who is with us?


References

Leghissa A, Hildenbrand ZL, Foss FW, Schug KA. Determination of cannabinoids from a surrogate hops matrix using multiple reaction monitoring gas chromatography with triple quadrupole mass spectrometry. J Sep Sci 2018a; 41: 459-468.

Leghissa A, Hildenbrand ZL, Schug KA. Determination of the metabolites of Δ9-Tetrahydrocannabinol using multiple reaction monitoring gas chromatography – triple quadrapole – mass spectrometry. Separation Science Plus 2018b; 1: 43-47.

Leghissa A, Smuts J, Changling Q, Hildenbrand ZL, Schug KA. Detection of cannabinoids and cannabinoid metabolites using gas chromatography-vacuum ultraviolet spectroscopy. Separation Science Plus 2018c; 1: 37-42.

Qiu C, Smuts J, Schug KA. Analysis of terpenes and turpentines using gas chromatography with vacuum ultraviolet detection. J Sep Sci 2017; 40: 869-877.

extraction equipment

The Ever-Growing Importance of Protecting Cannabis Extraction Innovations

By Alison J. Baldwin, Brittany R. Butler, Ph.D., Nicole E. Grimm
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extraction equipment

With legalization of cannabis for medicinal and adult use occurring rapidly at the state level, the industry is seeing a sharp increase in innovative technologies, particularly in the area of cannabis extraction. Companies are developing novel extraction methods that are capable of not only separating and recovering high yields of specific cannabinoids, but also removing harmful chemicals (such as pesticides) from the concentrate. While some extraction methods utilize solvents, such as hydrocarbons, the industry is starting to see a shift to completely non-solvent based techniques or environmentally friendly solvents that rely on, for example, CO2, heat and pressure to create a concentrate. The resulting cannabis concentrate can then be consumed directly, or infused in edibles, vape pens, topicals and other non-plant based consumption products. With companies continually seeking to improve existing extraction equipment, methods and products, it is critical for companies working in this area to secure their niche in the industry by protecting their intellectual property (IP).

extraction equipment
Extraction can be an effective form of remediating contaminated cannabis

Comprehensive IP protection for a business can include obtaining patents for innovations, trademarks to establish brand protection of goods and services, copyrights to protect logos and original works, trade dress to protect product packaging, as well as a combination of trade secret and confidentiality agreements to protect proprietary information and company “know-how” from leaking into the hands of competitors. IP protection in the cannabis space presents unique challenges due to conflicting state and federal law, but for the most part is available to cannabis companies like any other company.

Federal trademark protection is currently one of the biggest challenges facing cannabis companies in the United States. A trademark or service mark is a word, phrase, symbol or design that distinguishes the source of goods or services of one company from another company. Registering a mark with the U.S. Patent and Trademark Office (USPTO) provides companies with nationwide protection against another company operating in the same space from also using the mark.

As many in the industry have come to discover, the USPTO currently will not grant a trademark or service mark on cannabis goods or services. According to the USPTO, since cannabis is illegal federally, marks on cannabis goods and services cannot satisfy the lawful use in commerce requirement of the Lanham Act, the statute governing federal trademark rights. Extraction companies that only manufacture cannabis-specific equipment or use cannabis-exclusive processes will likely be unable to obtain a federal trademark registration and will need to rely on state trademark registration, which provides protection only at the state-level. However, extractors may be able to obtain a federal trademark on their extraction machines and processes that can legitimately be applied to non-cannabis plants. Likewise, companies that sell cannabis-infused edibles may be able to obtain a federal trademark on a mark for non-cannabis containing edibles if that company has such a product line.

Some extraction companies may benefit from keeping their innovations a trade secretSince the USPTO will not grant marks on cannabis goods and services, a common misconception in the industry is that the USPTO will also not grant patents on cannabis inventions. But, in fact, the USPTO will grant patents on a seemingly endless range of new and nonobvious cannabis inventions, including the plant itself. (For more information on how breeders can patent their strains, see Alison J. Baldwin et al., Protecting Cannabis – Are Plant Patents Cool Now? Snippets, Vol. 15, Issue 4, Fall 2017, at 6). Unlike the Lanham Act, the patent statute does not prohibit illegal activity and states at 35 U.S.C. § 101 that a patent may be obtained for “any new and useful process, machine, manufacture, or composition of matter, or any new and useful improvement thereof.”

For inventions related to extraction equipment, extraction processes, infused products and even methods of treatment with concentrated formulations, utility patents are available to companies. Utility patents offer broad protection because all aspects related to cannabis extraction could potentially be described and claimed in the same patent. Indeed, there are already a number of granted patents and published patent applications related to cannabis extraction. Recently, U.S. Patent No. 9,730,911 (the ‘911 patent), entitled “Cannabis extracts and methods of preparing and using same” that granted to United Cannabis Corp. covers various liquid cannabinoid formulations containing very high concentrations of tetrahydrocannabinolic acid (THCa), tetrahydrocannabinol (THC), cannabidiol (CBD), THCa and cannabidiolic acid, THC and CBD, and CBD, cannabinol (CBN), and THC. For example, claim 1 of the ‘911 patent recites:

A liquid cannabinoid formulation, wherein at least 95% of the total cannabinoids is tetrahydrocannabinolic acid (THCa).Properly crafted non-disclosure agreements can help further ensure that trade secrets remain a secret indefinitely.

Although the ‘911 patent only covers the formulations, United Cannabis Corp. has filed a continuation application that published as US2017/0360745 on methods for relieving symptoms associated with a variety of illnesses by administering one or more of the cannabinoid formulations claimed in the ‘911 patent. This continuation application contains the exact same information as the ‘911 patent and is an example of how the same information can be used to seek complete protection of an invention via multiple patents.

An example of a patent application directed to solvent-based extraction methods and equipment is found in US20130079531, entitled “Process for the Rapid Extraction of Active Ingredients from Herbal Materials.” Claim 1 of the originally filed application recites:

A method for the extraction of active ingredients from herbal material comprising: (i) introducing the herbal material to a non-polar or mildly polar solvent at or below a temperature of 10 degrees centigrade and (ii) rapidly separating the herbal material from the solvent after a latency period not to exceed 15 minutes.

Claim 12, covered any equipment designed to utilize the process defined in claim 1.

Although now abandoned, the claims of this application were not necessarily limited to cannabis, as the claims were directed to extracting active ingredients from “herbal materials.”

Other patents involve non-toxic extraction methods utilizing CO2, such as Bionorica Ethics GMBH’s U.S. Patent No. 8,895,078, entitled “Method for producing an extract from cannabis plant matter, containing a tetrahydrocannabinol and a cannabidiol and cannabis extracts.” This patent covers processes for producing cannabidiol from a primary extract from industrial hemp plant material.

There have also been patents granted to cannabis-infused products, such as U.S. Patent No. 9,888,703, entitled “Method for making coffee products containing cannabis ingredients.” Claim 1 of this patent recites:

A coffee pod consisting essentially of carbon dioxide extracted THC oil from cannabis, coffee beans and maltodextrin.

Despite the USPTO’s willingness to grant cannabis patents, there is an open question currently regarding whether they can be enforced in a federal court (the only courts that have jurisdiction to hear patent cases). However, since utility patents have a 20-year term, extractors are still wise to seek patent protection of the innovations now.

Another consideration in seeking patent protection for novel extraction methods and formulations is that the information becomes public knowledge once the patent application publishes. As this space becomes increasingly crowded, the ability to obtain broader patents will decline. Therefore, some extraction companies may benefit from keeping their innovations a trade secret, which means that the secret is not known to the public, properly maintained and creates economic value by way of being a secret. Properly crafted non-disclosure agreements can help further ensure that trade secrets remain a secret indefinitely.

Regardless of the IP strategy extractors choose, IP protection should be a primary consideration for companies in the cannabis industry to ensure the strongest protection possible both now and in the future.

Marguerite Arnold

Carry On Cannabis: UK Parliament Debates Reform (Again)

By Marguerite Arnold
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Marguerite Arnold

The British Parliament considered a new right last Friday – the right of chronically ill patients to treat their conditions with cannabinoids. The bill to reform the law and allow medical use, the Legalisation of Cannabis (Medicinal Purposes) Bill 2017-19 was also re-read. It was first introduced last October.

While reformers at this point are loath to do any more than publicly hope, events in the UK continue to unfold in favour of reform.

This time, it is in the wake of a highly upsetting and embarrassing incident that further highlights the human toll of prohibition. When the British Home Office (a combination of the State Department, Homeland Security and a few other federal U.S. agencies) refuses cannabis oil to six year-old Britons with epilepsy named Alfie, don’t expect the famed stiff upper lip in response.

Not anymore.Why on earth would a home-grown company deny treatment to a British kid with epilepsy? 

Especially not when the rest of the EU is moving forward, Canada and Australia (both countries are a part of the British Commonwealth) are now firmly in the medical camp with Canada moving ahead with recreational use this summer. Not to mention continuing reform on both fronts in many U.S. states. Even with setbacks that include the Trump White House and Justice Department (the recently dismissed federal case in New York being just the latest casualty), recreational reform in California is an international beacon of change that will not go quietly into the night. Not now.

One of the more interesting aspects of the Dingley case in the UK, in sharp contrast, is how fast Parliament responded to the plight of the six-year-old and his mother. Not only has Dingley’s medical import license been reconsidered in Parliament, but the matter appears to have finally galvanized significant numbers of the British elected class to do something about an appalling situation that affects hundreds of thousands, if not millions of Brits too.

Cannabis Medical Refugees

Medical refugee policy, especially around cannabinoids, is at least as controversial as the other kind. In Europe and the rest of the world, just like cannabis reform itself, these are national, not state issues as they have been in the U.S., (where the issue of cannabis patient state “refugees” has nonetheless been an issue for most of this decade).

Outside of the U.S., however, it is still the case that national governments can be embarrassed into reform with the right case (or groups of them).

epidiolex
GW Pharma said their product Epidiolex (for the treatment of childhood epilepsy) is being considered by the European Medicines Agency

That was certainly true in Israel in 2014, when the so-called “15 Families” threatened to emigrate from Israel to Colorado unless the government allowed them to treat their sick kids (federal government policy was changed within a month). Not to mention an internal, state to state migration of families in the United States to Colorado around the same time.

It may also be true in this latest British case. The Home Office has been embroiled in a few embarrassing take backs of late, mostly on the topic of immigration of people. The Alfie-Dingley cannabis case hits both medical cannabis reform and lingering buyer’s remorse over Brexit where the British people actually live (and on topics they actually care about).

Refusing at least medical cannabis rights in the UK might also well tip the scales in favour of a redo on Brexit. Or at least capture the support of people who still dream of that possibility. While the UK is still part of the continent, British citizens also have the right to travel freely, with medical rights intact, to other countries and get treatment. The British are no strangers to this idea (in fact, many British retirees end up in Spain and Greece for precisely this reason). Add cannabis to the mix, and current British policy looks even more out of step with reality and the wishes of the British people. Even the older, more conservative and “middle class” (read: American working if not blue-collar class) ones.

Local Production and Prohibition

And then of course, there is this irony. GW Pharmaceuticals, one of the oldest, cannabis companies in the world, is located in the UK. It even grows its own crops there, and has a special license from the British government to do so.

Worse, in this particular situation, it also is busy bringing several cannabinoid-based anti-epileptic drugs (for children and adults) to the market.GW logo

Why on earth would a home-grown company deny treatment to a British kid with epilepsy? And how could a government grant a license to a company to develop the plant for profit, but not a child who desperately needs the drug to live?

In a move that seems more than coincidence, GW Pharma also reported this week that their product Epidiolex (for the treatment of childhood epilepsy) is being considered by the European Medicines Agency, while a separate drug also bound for the epilepsy market called GWP42006 had just failed a Phase IIa trial for focal seizures.

The business press of course, has mostly reported that the only impact of this development so far of course, is that the company took a hit on share price.

It might do a bit more than that. Starting with legislative reform and ending with the sparking of significant home-grown (and legal) competition.

The combined impact of a failed trial in Eastern Europe by the only British company licensed and qualified to produce medicinal cannabinoids for any reason, and the plight of a British boy at home who needs precisely this kind of drug (and has so far been denied it), might in fact be the tinder match that lights political and market reform if not the development of a cannabis industry (finally) in Great Britain.

If this doesn’t, probably nothing will.

dSPE cleanups

The Grass Isn’t Always Greener: Removal of Purple Pigmentation from Cannabis

By Danielle Mackowsky
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dSPE cleanups
strains
Cannabis strains used (clockwise from top left): Agent Orange, Tahoe OG, Blue Skunk, Grand Daddy and Grape Drink

Cannabis-testing laboratories have the challenge of removing a variety of unwanted matrix components from plant material prior to running extracts on their LC-MS/MS or GC-MS. The complexity of the cannabis plant presents additional analytical challenges that do not need to be accounted for in other agricultural products. Up to a third of the overall mass of cannabis seed, half of usable flower and nearly all extracts can be contributed to essential oils such as terpenes, flavonoids and actual cannabinoid content1. The biodiversity of this plant is exhibited in the over 2,000 unique strains that have been identified, each with their own pigmentation, cannabinoid profile and overall suggested medicinal use2. While novel methods have been developed for the removal of chlorophyll, few, if any, sample preparation methods have been devoted to removal of other colored pigments from cannabis.

QuEChERS
Cannabis samples following QuEChERS extraction

Sample Preparation

Cannabis samples from four strains of plant (Purple Drink, Tahoe OG, Grand Daddy and Agent Orange) were hydrated using deionized water. Following the addition of 10 mL acetonitrile, samples were homogenized using a SPEX Geno/Grinder and stainless steel grinding balls. QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) non-buffered extraction salts were then added and samples were shaken. Following centrifugation, an aliquot of the supernatant was transferred to various blends of dispersive SPE (dSPE) salts packed into centrifugation tubes. All dSPE tubes were vortexed prior to being centrifuged. Resulting supernatant was transferred to clear auto sampler vials for visual analysis. Recoveries of 48 pesticides and four mycotoxins were determined for the two dSPE blends that provided the most pigmentation removal.

Seven dSPE blends were evaluated for their ability to remove both chlorophyll and purple pigmentation from cannabis plant material:

  • 150 mg MgSO4, 50 mg PSA, 50 mg C18, 50 mg Chlorofiltr®
  • 150 mg MgSO4, 50 mg C18, 50 mg Chlorofiltr®
  • 150 mg MgSO4, 50 mg PSA
  • 150 mg MgSO4, 25 mg C18
  • 150 mg MgSO4, 50 mg PSA, 50 mg C18
  • 150 mg MgSO4, 25 mg PSA, 7.5 mg GCB
  • 150 mg MgSO4, 50 mg PSA, 50 mg C18, 50 mg GCB

Based on the coloration of the resulting extracts, blends A, F and G were determined to be the most effective in removing both chlorophyll (all cannabis strains) and purple pigments (Purple Drink and Grand Daddy). Previous research regarding the ability of large quantities of GCB to retain planar pesticides allowed for the exclusion of blend G from further analyte quantitation3. The recoveries of the 48 selected pesticides and four mycotoxins for blends A and F were determined.

dSPE cleanups
Grand Daddy following various dSPE cleanups

Summary

A blend of MgSO4, C18, PSA and Chlorofiltr® allowed for the most sample clean up, without loss of pesticides and mycotoxins, for all cannabis samples tested. Average recovery of the 47 pesticides and five mycotoxins using the selected dSPE blend was 75.6% were as the average recovery when including GCB instead of Chlorofiltr® was 67.6%. Regardless of the sample’s original pigmentation, this blend successfully removed both chlorophyll and purple hues from all strains tested. The other six dSPE blends evaluated were unable to provide the sample clean up needed or had previously demonstrated to be detrimental to the recovery of pesticides routinely analyzed in cannabis.


References

(1)           Recommended methods for the identification and analysis of cannabis and cannabis products, United Nations Office of Drugs and Crime (2009)

(2)            W. Ross, Newsweek, (2016)

(3)            Koesukwiwat, Urairat, et al. “High Throughput Analysis of 150 Pesticides in Fruits and Vegetables Using QuEChERS and Low-Pressure Gas Chromatography Time-of-Flight Mass Spectrometry.” Journal of Chromatography A, vol. 1217, no. 43, 2010, pp. 6692–6703., doi:10.1016/j.chroma.2010.05.012.

israel flag

Israel’s Cannabis Export Plans Evaporate in Fire and Fury

By Marguerite Arnold
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israel flag

Trump Administration-Israeli relations had the distinct whiff of cannabis to them in the first week of February. In a development potentially just as impactful as transplanting Israel’s capital to Jerusalem, it has now emerged that Israel’s president, Benjamin Netanyahu, has effectively scotched, at least temporarily, the country’s budding medical cannabis international export plans on the eve of finally launching them.

Why? To appease the U.S. president.

What this latest act of international “diplomacy” will eventually impact in the long run is anyone’s guess. There will, however, be winners and losers out of this situation, both now and in the long term.

Who Wins

On the surface (and to gentiles) it might be hard to understand why Israel effectively shot itself in the foot from a global perspective. But cannabis falls into complicated geopolitical and religious crevices at home too. Bibi, as Netanyahu is referred to by an international Jewish audience, has just scored political points over the Jerusalem showdown. Why rock the boat over a plant that has so recently gained legitimacy just in Israel? Remember the country only partially decriminalized recreational use in 2017. However, Israel has explored legal medical cannabis for quite some time, and Tikun Olam, the country’s flagship producer, has been growing cannabis since 2007.

Tel Aviv, Israel, where Tikun Olam has a dispensary

The quote from Netanyahu that has been widely circulated in the press says a great deal. “I spoke with Trump and he told me about his general opposition to the legalization of cannabis, and I’m not sure Israel should be the export pioneer.”

The fact that apparent encouragement of this policy came from the Israeli Finance Ministry only underscores the gravity of the impact for the losing side – and what was also probably threatened. Uruguayan pharmacies, who began distributing medical cannabis legally, walked away from customers last year after their banks were first informed by U.S. partners that they would either have to cut off the pharmacies or sever ties and access to the entire U.S. banking system. The cannabis trade was estimated to be worth between $1-4 billion per year to Israeli firms.

That said, this will also be a short-lived hiccup. Netanyahu apparently wants to see more medical evidence before moving forward with the plan. That means Israel will be in the race, but not for the next 12 to 18 months (minimum).

Prime Minister Benjamin Netanyahu (Bibi)
Image: Kjetil Elsebutangen, UD

This will also not affect the cannabinoid-related export of intellectual property, where Israel has also led the cannabinoid discussion and for several generations now. Recipes, breeding instructions and even seeds cross borders more easily than plants. If anything, it will merely sharpen and shape the start up nation’s many budding cannapreneurs in a slightly different focus.

Canadian, Australian and a few other exporters also win. As of 2018, there will also be multiple European countries and EU-based firms importing and exporting (even if it is to each other).

Who Loses

The U.S. legal state cannabis movement has just been served a two fisted punch in the face by the White House. The Trump administration, in fact, has doubled down, in the space of less than five weeks, on its views towards cannabis legalization.

This also means that there will be no U.S. firms in any position to join a now global and exploding legitimate cannabis industry that stretches from the American hemisphere north and south of the U.S. itself. Not only will American producers not be able to get export approvals themselves from the U.S. government, but they may well be facing federal prosecution back home.israel flag

It will also be interesting to see whether this heralds any post-Cole memo prosecutions of the many Israeli entrepreneurs already operating in the U.S. state cannabis space. American and Israeli entrepreneurs with IP to protect are also the losers here, no matter how much this is being fought on the California front right now. That is just a state battle. IP must be protected federally.

Investors in the U.S. who had already been tempted to invest in the Canadian cannabis industry, now have little incentive to invest domestically or in Israel, no matter how big and bad California is. There is clearly budding (and less politically risky) competition elsewhere.

It goes without saying, of course, that this decision also hurts consumers – both recreational consumers and medical patients.

Bottom Line

This is clearly sabre rattling of the kind intended to make news both internationally and abroad. However, in direct terms, it will have little impact to the overall growth of the industry, no matter who is doing the growing, distributing and ex-im. The cannabis industry will also clearly not stop being a political business for the near term.

Look for prosecutions this if not next year in the U.S. – potentially in California or another high profile “impact” state. We might see pressure on Netanyahu at home, and probably from abroad as well, to get Israel into the cannabis game globally.

EVIO Logo

EVIO Labs: The First Accredited Cannabis Lab in Florida

By Lauren Masko
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EVIO Logo

EVIO Labs recently became the first cannabis laboratory in Florida to obtain ISO 17025 accreditation. Perry Johnson Laboratory Accreditation, Inc. (PJLA), an organization that provides third-party assessments to ISO/IEC 17025, accredited EVIO Labs. The assessment process that lead to ISO 17025 accreditation for EVIO Labs included a thorough review of their quality management system, their capability to perform potency and contaminant testing for cannabis products.

Tracy Szerszen, president and operations manager at PJLA, encourages this international standard for laboratories to provide confidence to end-users that the test results they receive are reliable. She says laboratories that achieve this accreditation are showing they have the proper tools, equipment and staff to provide accurate testing. “It is a very critical component of the industry, and becoming accredited provides the assurance that laboratories are performing to the highest standard,” says Szerszen. “EVIO Labs has taken the right step in their commitment towards meeting this standard and providing clean and safe cannabis for the patients of Florida.”

PJLAEVIO Labs provides cannabis testing for cannabinoid and terpene profiles, microbiological and pesticides contamination, residual solvent, heavy metals, mycotoxins, water activity and moisture content. Chris Martinez, co-founder and president of EVIO Labs Florida explains that the Florida Department of Health mandates that an independent third-party laboratory tests medical cannabis to ensure that these products are safe for human consumption. Martinez says their first priority is the safety of their patients, and ensuring that EVIO Labs provides clean and safe cannabis for Florida.

Chris Martinez
Chris Martinez, co-founder and president of EVIO Labs Florida

Martinez launched their laboratory with some help from Shimadzu last year. “Our Broward lab is powered by Shimadzu with over $1.2M in the latest testing equipment utilizing LCMS technology with the world’s fastest polarity switching time of 5 m/sec and scan speeds of 30,000 u/sec with UF Qarray sensitivity 90 times that of previously available technologies,” says Martinez. According to Martinez, their licensing agreement with EVIO Labs (OTC:SGBYD) marked a first for the publicly traded company with exclusivity in the Florida market. The agreement includes proprietary testing methodologies, operating procedures, training and support.

Every certificate of analysis is reviewed by a lab director with over 20 years of experience operating in FDA regulated labs. Martinez says that EVIO has some of the most advanced technology in the industry, which provides them the opportunity to quickly provide results, frequently as fast as a 24-hour period. Martinez and his team are currently building a 3,300 square-foot laboratory in Gainesville, which is expected to be running by March of this year.

Dr. Zacariah Hildenbrand
Soapbox

Cannabis and the Environment: Navigating the Interplay Between Genetics and Transcriptomics

By Dr. Zacariah Hildenbrand
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Dr. Zacariah Hildenbrand

It is that time of year where the holidays afford us an opportunity for rest, recuperation and introspection. Becoming a new father to a healthy baby girl and having the privilege to make a living as a scientist, fills me with an immeasurable sense of appreciation and indebtedness. I’ve also been extremely fortunate this year to spend significant time with world-renowned cannabis experts, such as Christian West, Adam Jacques and Elton Prince, whom have shared with me a tremendous wealth of their knowledge about cannabis cultivation and the development of unique cannabis genetics. Neither of these gentlemen have formal scientific training in plant genetics; however, through decades of experimentation, observation and implementation, they’ve very elegantly used alchemy and the principles of Mendelian genetics to push the boundaries of cannabis genetics, ultimately modulating the expression of specific cannabinoids and terpenes. Hearing of their successes (and failures) has triggered significant wonderment and curiosity with respect to what can be done beyond the genetic level to keep pushing the equilibrium in this new frontier of medicine.

Lighting conditions can greatly impact the expression of terpenes (and cannabinoids) in cannabis.Of course genetics are the foundation for the production of premium cannabis. Without the proper genetic code, one cannot expect the cannabis plant to express the target constituents of interest. However, what happens when you have an elite genetic code, the holy grail of cannabis nucleotides if you will, and yet your plant does not produce the therapeutic compounds that you want and/or that are reflective of that elite genetic code? This ‘loss in translation’ can be explained by transcriptomics, and more specifically, epigenetics. In order for the genetic code (DNA) to be expressed as a gene product (RNA), it must be transcribed, a process that is modulated by epigenetic processes like DNA methylation and histone modification. In other words, the methylation of the genetic code can dictate whether or not a particular segment of DNA is transcribed into RNA, and ultimately expressed in the plant. To put this into context, if the DNA code for the enzyme THCA synthase is epigenetically silenced, then no THCA synthase is produced, your cannabis cannot convert CBGA into THCA, and now you have hemp that is devoid of THC.So what is the best lighting technology to enhance the expression of terpenes? 

With all of that being said, how do we ensure that our plants thrive under favorable epigenetic conditions? The answer is the environment; and the expression of terpenes is an ideal indicator of favorable environmental conditions. While amazing anti-inflammatories, anti-oxidants and metabolic regulators for humans, terpenes are also extremely powerful anti-microbial agents that act as a robust a line of defense for the plant against bacteria and pests. So, if the threat of microbes can induce the expression of terpenes, then what about other environmental factors? I am of the opinion that the combination of increased exposure to bacteria and natural sunlight enhances the expression of terpenes in outdoor-grown cannabis compared to indoor-grown cannabis. This is strictly my opinion based off of my own qualitative observations, but the point being is that lighting conditions can greatly impact the expression of terpenes (and cannabinoids) in cannabis.

A plant in flowering under an LED fixture

So what is the best lighting technology to enhance the expression of terpenes? Do I use full spectrum lighting or specific frequencies? The answer to these questions is that we don’t fully know at this point. Thanks to the McCree curve we have a fundamental understanding of the various frequencies within the visible light spectrum (400-700nm) that are beneficial to plants, also known as Photosynthetically Active Radiation (PAR). However, little-to-no research has been conducted to determine the impacts that the rest of the electromagnetic spectrum (also categorized as ‘light’) may have on plants. As such, we do not know with 100% certainty what frequencies should be applied, and at what times in the growth cycle, to completely optimize terpene concentrations. This is not to disparage the lighting professionals out there that have significant expertise in this field; however, I’m calling for the execution of peer-reviewed experiments that would transcend the boundaries of company white papers and anecdotal claims. In my opinion, this lack of environmental data provides a real opportunity for the cannabis industry to initiate the required collaborations between cannabis geneticists, technology companies and environmental scientists. This is one field of research that I wish to pursue with tenacity and I also welcome other interested parties to join me in this data quest. Together we can better understand the environmental factors, such as lighting, that are acting as the molecular light switches at the interface of genetics and transcriptomics in cannabis.