Lagunitas Brewing today unveiled a new beer infused with cannabis, making it the first large national brewery to experiment with cannabis. Lagunitas, now owned by Heineken, announced the launch of their “Supercritical Ale,” an IPA brewed with terpenes extracted from cannabis.
The brewery chose to partner with AbsoluteXtracts and CannaCraft, based in California, for their cannabis extract and will use hops from Yakima, Washington. “We’ve long known about the close connection between cannabis and hops,” reads their website. “Now Lagunitas is excited to partner with a like-minded neighbor in Sonoma County, AbsoluteXtracts, to close the gap further with tandem innovations on the topic.” Hops and cannabis belong in the same taxonomic family, Cannabinaceae, and they also have a number of physical similarities, which helps explain the “close connection” they are referring to. The website says the beer will only be available in California—for now. According to Fortune Magazine, the terpenes come from two strains, Blue Dream and Girl Scout Cookies (known as GSC in some states).
The name “Supercritical” comes from the state that carbon dioxide is best used as a solvent for extracting compounds from plants. Terpenes are responsible for the aromatic properties of plants, giving hops the piney and citrusy flavors that come in IPAs, and giving cannabis the same flavors and smells as well. Limonene, for example, is a cyclic terpene molecule that gives us a citrusy smell and flavor.
They’re not the first brewery to experiment with cannabis-infused beer; smaller craft breweries have been doing it for some time now. Coalition Brewing Co., based in Portland, Oregon, sells a cannabis-infused beer called Two Flowers IPA, with 3mg of cannabidiol (CBD) in a 12oz glass. Dad and Dudes Breweria, based in Aurora, Colorado, also put out a CBD-infused beer last year, called General Washington’s Secret Stash. According to Westword, Dad and Dudes was the first brewery to receive federal approval for a CBD-infused beer, but since the DEA declared cannabis oil illegal last winter, the Alcohol and Tobacco Tax and Trade Bureau rescinded their approval.
The common denominator between these three beers is that none of them contain THC, the popular psychoactive ingredient in cannabis. Perhaps Lagunitas is taking a safer approach with regard to federal legality by only using terpenes, not CBD, and only offering it in state. Coalition’s Two Flowers IPA is also only available in Oregon, but does, however, contain CBD. Check out the video on Lagunitas’ Supercritical Ale below.
Demand for cannabis extracts, in particular vaping products, is at an all-time high. People want good oil, and they want to know something about the quality of it. It is therefore time to take a step back and consider the process from plant to cartridge. What is the current industry standard for cannabis extraction, what constitutes quality and where might we need to make some adjustments?
Right now, “clear” oil is hot. Customers have been led to believe that a pale gold extract is synonymous with the best possible cannabis concentrate, which is not necessarily the case. Producing a 95% pure THC extract with a translucent appearance is neither a great scientific feat nor a good representation of the whole cannabis flower. Moreover, it runs counter to the current trend of all-natural, non-processed foods and wellness products.
“My carrots are organic and fresh from the farmers market, my drink has no artificial sweeteners and my honey is raw, but my cannabis oil has undergone a dozen steps to look clear and still contains butane.”Cannabis is a fascinating plant. It is the basis of our livelihood, but more importantly, it enhances the quality of life for patients. The cannabis plant offers a plethora of medicinally interesting compounds. THC, CBD and terpenes are the most popular, but there are so many more. As of the most recent count, there are 146 known cannabinoids1. Cannabinoids are a group of structurally similar molecules2, including THC and CBD, many of which have shown biological activity3.
Then there are terpenes. These are the smaller molecules that give cannabis its distinct smell and flavor, over 200 of which have been identified in cannabis4. But wait, there’s more. The cannabis plant also produces countless other metabolites: flavonoids, alkaloids, phenols and amides5. All these components mixed together give the often-cited entourage effect6,7.
Current industry standards for cannabis oil extraction and purification stand in marked contrast to the complexity of the plant’s components. Due to an unsophisticated understanding of the extraction process and its underlying chemistry, cannabis oil manufacturers frequently produce oil of low quality with high levels of contamination. This necessitates further purifications and clean up steps that remove such contaminants unfortunately along with beneficial minor plant compounds. If one purifies an extract to a clear THC oil, one cannot also offer the full spectrum of cannabinoids, terpenes and other components. Additionally, claiming purities around 95% THC and being proud of it, makes any self-respecting organic chemist cringe8.
The labor-intensive, multi-step extraction process is also contrary to “the clean-label food trend”, which “has gone fully mainstream”9. Exposing the cannabis flower and oil to at least half a dozen processing steps violates consumer’s desire for clean medicine. Furthermore, the current practice of calling supercritical-CO2-extracted oils solvent-less violates basic scientific principles. Firstly, CO2 is used as a solvent, and secondly, if ethanol is used to winterize10, this would introduce another solvent to the cannabis oil.
We should reconsider our current extraction practices. We can offer cannabis extracts that are free of harmful solvents and pesticides, give a better, if not full, representation of the cannabis plant and meet the patients’ desire for clean medicine. Realizing extracts as the growth-driver they are11 will make us use better, fresher starting materials12. Understanding the underlying science and learning about the extraction processes will allow us to fine-tune the process to the point that we target extract customized cannabis concentrates13. Those, in turn, will not require additional multi-step purification processes, that destroys the basis of the entourage effect.
The cannabis industry needs to invest and educate. Better extracts are the result of knowledgeable, skilled people using precise instruments. Backroom extraction with a PVC pipe and a lighter should be horror stories of the past. And only when the patient knows how their medicine is made can they make educated choices. Through knowledge, patients will understand why quality has its price.
In short, over-processing to make clear oil violates both the plant’s complexity and consumers’ desires. Let us strive for pure extracts, not clear. Our patients deserve it.
 Prof. Meiri; lecture at MedCann 2017
 ElSohly, Slade, Life Sciences2005, 539
 Whiting, et. al.,JAMA.2015, 2456
 Andre, Hausman, Guerriero, Frontiers in Plant Science2016, 19
The Pennsylvania Department of Health announced today the first 12 winners of growing and processing permits for the state’s medical cannabis program. At first glance, it appears those who won the permits have teams with experience in successful cannabis operations elsewhere in the country. The permit winners now have six months to become operational, according to a press release.
According to that press release, John Collins, director of the Pennsylvania Office of Medical Marijuana, received 457 applications in total, with 177 prospective grower/processors and 280 for dispensaries. “With today’s announcement, we remain on track to fulfill the Wolf Administration’s commitment to deliver medical marijuana to patients in 2018,” says Collins. “The applications from the entities receiving permits were objectively reviewed by an evaluation team made up of members from across commonwealth agencies.”
In the populous Southeast region of Pennsylvania, grower/processor permits were awarded to Prime Wellness of Pennsylvania, LLC, and Franklin Labs, LLC. Prime Wellness is a Connecticut-based enterprise. According to Steve Schain, Esq., attorney at the Hoban Law Group, Franklin Labs includes team members from Garden State Dispensary, a successful medical cannabis operation in New Jersey.
Two of the businesses that won permits are actually from Illinois, not Pennsylvania. GTI Pennsylvania, LLC (Green Thumb Industries), has a strong presence in Illinois and Nevada. AES Compassionate Care LLC lists their business state as Illinois as well.
“Based on the first phase award of grower/processor licensees both the strength and weakness of Pennsylvania’s program has been highlighted,” says Schain. “Many licensee recipients are affiliated with existing national marijuana-related businesses with excellent track records for operating in a transparent, compliant and profitable manner.” The applications were rated on a scorecard out of 1,000 points. “Unfortunately missing from this initial phase license winners are purely regional enterprises who may have been unable to compete with national concerns’ resources and checkbooks.” According to Schain, some of the more significant areas on the scorecard reflect a diversity plan, community impact statement, business history and capacity to operate, capital requirements and operational timetable. Capital requirements are the applicants’ demonstrable financial resources comprised of at least $2 million in capital and $500,000 in cash. All of the growers are required to grow indoors, not in a greenhouse or on an outdoor farm.
There is also a ten-day appeals process for scorecards that will undoubtedly be utilized by companies that were not successful in their bids. The next phase, according to Schain, of Pennsylvania’s Medical Marijuana Program regards “Clininical Registrants” in which grow/processor and dispensary licensure will be awarded to eight applicants, which, if able to satisfy requirements including demonstrating $15 million in capital, will be authorized to open up to six dispensary locations.
Hazard analysis and critical control points (HACCP) is a robust management system that identifies and addresses any risk to safety throughout production. Originally designed for food safety through the entire supply chain, the risk assessment scheme can ensure extra steps are taken to prevent contamination.
The FDA as well as the Food Safety and Inspection Service currently require HACCP plans in a variety of food markets, including high-risk foods like poultry that are particularly susceptible to pathogenic contamination. As California and other states develop and implement regulations with rigorous safety requirements, cannabis cultivators, extractors and infused product manufacturers can look to HACCP for guidance on bolstering their quality controls. Wikipedia actually has a very helpful summary of the terms referenced and discussed here.
The HACCP system consists of six steps, the first of which being a hazard analysis. For Dr. Markus Roggen, vice president of extraction at Outco, a medical cannabis producer in Southern California, one of their hazard analyses takes place at the drying and curing stage. “When we get our flower from harvest, we have to think about the drying and curing process, where mold and bacteria can spoil our harvest,” says Dr. Roggen. “That is the hazard we have to deal with.” So for Dr. Roggen and his team, the hazard they identified is the potential for mold and bacteria growth during the drying and curing process.
The next step in the HACCP system is to identify a critical control point. “Correct drying of the flower will prevent any contamination from mold or bacteria, which is a control point identified,” says Dr. Roggen. “We also have to prevent contamination from the staff; it has to be the correct environment for the process.” That might include things like wearing gloves, protective clothing and hand washing. Once a control point is identified, the third step in the process is to develop a critical limit for those control points.
A critical limit for any given control point could be a maximum or minimum threshold before contamination is possible, reducing the hazard’s risk. “When we establish the critical limit, we know that water activity below 0.65 will prevent any mold growth so that is our critical limit, we have to reach that number,” says Dr. Roggen. The fourth step is monitoring critical control points. For food manufacturers and processors, they are required to identify how they monitor those control points in a written HACCP plan. For Dr. Roggen’s team, this means using a water activity meter. “If we establish the critical control point monitoring, water activity is taken throughout the drying process, as well as before and after the cure,” says Dr. Roggen. “As long as we get to that number quickly and stay below that number, we can control that point and prevent mold and bacteria growth.”
When monitoring is established and if the critical limit is ever exceeded, there needs to be a corrective action, which is the fifth step in a HACCP plan. In Dr. Roggen’s case, that would mean they need a corrective action ready for when water activity goes above 0.65. “If we don’t have the right water activity, we just continue drying, so this example is pretty simple,” says Dr. Roggen. “Normal harvest is 7 days drying, if it is not dry enough, we take longer to prevent mold or bacteria growth.”
The sixth step is establishing procedures to ensure the whole system works. In food safety, this often means requiring process validation. “We have to double check that our procedure and protocols work,” says Dr. Roggen. “Checking for water activity is only a passive way of testing it, so we send our material to an outside testing lab to check for mold or bacteria so that if our protocols don’t work, we can catch those problems in the data and correct them.” They introduced weekly meetings where the extraction and cultivation teams get together to discuss the processes. Dr. Roggen says those meetings have been one of the most effective tools in the entire system.
The final step in the process is to keep records. This can be as simple as keeping a written HACCP plan on hand, but should include keeping data logs and documenting procedures throughout production. For Dr. Roggen’s team, they log drying times, product weight and lab tests for every batch. Using all of those steps, Dr. Roggen and his team might continue to update their HACCP plans when they encounter a newly identified hazard. While this example is simplistic, the conceptual framework of a HACCP plan can help detect and solve much more complex problems. For another example, Dr. Roggen takes us into his extraction process.
Dr. Roggen’s team, on the extraction side of the business, uses a HACCP plan not just for preventing contamination, but for protecting worker safety as well. “We are always thinking about making the best product, but I have to look out for my team,” says Dr. Roggen. “The health risk to staff in extraction processes is absolutely a hazard.” They use carbon dioxide to extract oil, which carries a good deal of risks as well. “So when we look at our critical control points we need to regularly maintain and clean the extractor and we schedule for that,” says Dr. Roggen.
“My team needs respirators, protective clothing, eyewear and gloves to prevent contamination of material, but also to protect the worker from solvents, machine oil and CO2 in the room.” That health risk means they try and stay under legal limits set by the government, which is a critical limit of 3,000 ppm of carbon dioxide in the environment. “We monitor the CO2 levels with our instruments and that is particularly important whenever the extractor is opened.” Other than when it is being opened, Dr. Roggen, notes, the extractor stays locked, which is an important worker safety protocol.
The obvious corrective action for them is to have workers leave the room whenever carbon dioxide levels exceed that critical limit. “We just wait until the levels are back to normal and then continue operation,” says Dr. Roggen. “We updated our ventilation system, but if it still happens they leave the room.” They utilize a sort of double check here- the buddy system. “I took these rules from the chemistry lab; we always have two operators working on the machine on the same time, never anyone working alone.” That buddy check also requires they check each other for protective gear. “Just like in rock climbing or mountain biking, it is important to make sure your partner is safe.” He says they don’t keep records for employees wearing protective gear, but they do have an incident report system. “If any sort of incident takes place, we look at what happened, how could we have prevented it and what we could change,” says Dr. Roggen.
He says they have been utilizing some of these principles for a while; it just wasn’t until recently that they started thinking in terms of the HACCP conceptual framework. While some of those steps in the process seem obvious, and it is very likely that many cannabis processors already utilize them in their standard operating procedures and quality controls, utilizing the HACCP scheme can help provide structure and additional safeguards in production.
Tikun Olam is a Jewish concept that addresses social policy, promoting acts of kindness to better society. In Hebrew, it literally means, “repair of the world.” The company by the same name, Tikun Olam Ltd, and now in the United States as T.O. Global LLC, was the first medical cannabis provider in Israel back in 2007. Working with patients, doctors and nurses in clinical trials, they developed 16 strains over the last decade that target alleviating symptoms of specific ailments.
In November 2016, they launched their United States brand, Tikun, in the Delaware medical cannabis program with their partner, First State Compassion Center, a vertically integrated business of cultivation, extraction and retail in Wilmington. After the success of their pilot program, Tikun announced their expansion into the Nevada market with their licensed partner, CW Nevada LLC. Tikun is leveraging its experience with clinical trials and medical research to launch a line of cannabis products focused on health and wellness in the United States. According to Stephan Gardner, chief marketing officer at Tikun Olam, they have the largest collection of medical cannabis data in the world. “Tikun Olam started out as a non-profit, working to bring medication to patients in Israel,” says Gardner. “Opening nursing clinics gave us a tremendous amount of knowledge and data to work on the efficacy of strains developed specifically for targeting symptoms associated with certain conditions.” For example, their strain, Avidekel, was developed years ago as the first high-CBD strain ever created.
In a single-strain extraction, Avidekel has been used to successfully mitigate the symptoms associated with neurological conditions, like epilepsy in children, and they have the data to demonstrate that efficacy. “The American market needs some sort of guidance on how these cannabinoid and terpene profiles in certain strains can truly assist patients,” says Gardner. “We have been tracking and monitoring our patients with clinical and observational data in one, six month and annual follow ups, which are data we can use to guide the needs in the US.”
Their expansion strategy focuses heavily on the health benefits of their strains, not necessarily targeting the recreational market. “As a wellness brand in Nevada, we are positioned to work first and foremost in the medical market,” says Gardner. “Our wellness brand can cater to people looking for homeopathic remedies for things like inflammation issues, sleep disorders or pain relief for example,” says Gardner. “You will not see us going out there catering to the truly recreational market; the benefits of what our strains can do is marketed from a wellness perspective.” A cannabis product with high-THC percentages is not unique, says Gardner, but their approach using the entourage effect and proven delivery mechanisms is. “While higher THC might appeal to the rec market, that is not exactly how we will promote and position ourselves,” says Gardner. “We want to be a dominant force in the wellness market.”
That effort requires working within the US regulatory framework, which can be quite complicated compared to their experience in Israel. “We have to understand the Israeli market and American market are completely different due to the regulatory regimes each country has in place,” says Gardner. “We understand the efficacy of these products and want to educate customers on how they might benefit. We don’t want to make claims looking to cure anything, but we found in our data that a lot of symptoms in different ailments, like cancer, PTSD, Crohn’s disease, colitis and IBS, can be alleviated by strains we developed.” In addition to the medical research, they are bringing their intellectual property, cultivation methodologies, evidence-based scientific collaboration and best practices to their partners in the US.
So for Tikun’s expansion in the US, they want to get a medical dialogue going. “We will launch a fully accredited AMA [American Medical Association] program, educating medical practitioners, giving the doctors the understanding of the capabilities of cannabis and what our strains can do,” says Gardner. “We will also share our observational data with doctors so they can work to better guide their patients.” Right now, they are working on the education platform in their pilot program in Delaware. “We plan on using that as a platform to expand into other markets like Nevada,” says Gardner. “And we will be launching the Tikun brand in the Washington market this summer.” Based on the high demand they saw in the Delaware market, Gardner says they plan to launch six unique strains in the American market, with delivery mechanisms like vape products, tinctures, lozenges and topicals in addition to dried flower.
While Tikun expands throughout the United States, their sights are set on global expansion, living up to the true meaning of the concept Tikun Olam. They entered a strategic partnership with a licensed producer based in Toronto, bringing their strains, including Avidekel, to the Canadian market. The company they are partnering with, MedReleaf, recently filed for an initial public offering (IPO) on the Toronto stock exchange. Tikun Olam is actively seeking to expand in other parts of the world as well.
Edibles and vape pens are rapidly becoming a sizable portion of the cannabis industry as various methods of consumption popularize beyond just smoking dried flower. These products are produced using cannabis concentrates, which come in the form of oils, waxes or shatter (figure 1). Once the cannabinoids and terpenes are removed from the plant material using solvents, the solvent is evaporated leaving behind the product. Extraction solvents are difficult to remove in the low percent range so the final product is tested to ensure leftover solvents are at safe levels. While carbon dioxide and butane are most commonly used, consumer concern over other more toxic residual solvents has led to regulation of acceptable limits. For instance, in Colorado the Department of Public Health and Environment (CDPHE) updated the state’s acceptable limits of residual solvents on January 1st, 2017.
Since the most suitable solvents are volatile, these compounds are not amenable to HPLC methods and are best suited to gas chromatography (GC) using a thick stationary phase capable of adequate retention and resolution of butanes from other target compounds. Headspace (HS) is the most common analytical technique for efficiently removing the residual solvents from the complex cannabis extract matrix. Concentrates are weighed out into a headspace vial and are dissolved in a high molecular weight solvent such as dimethylformamide (DMF) or 1,3-dimethyl-3-imidazolidinone (DMI). The sealed headspace vial is heated until a stable equilibrium between the gas phase and the liquid phase occurs inside the vial. One milliliter of gas is transferred from the vial to the gas chromatograph for analysis. Another approach is full evaporation technique (FET), which involves a small amount of sample sealed in a headspace vial creating a single-phase gas system. More work is required to validate this technique as a quantitative method.
Gas Chromatographic Detectors
The flame ionization detector (FID) is selective because it only responds to materials that ionize in an air/hydrogen flame, however, this condition covers a broad range of compounds. When an organic compound enters the flame; the large increase in ions produced is measured as a positive signal. Since the response is proportional to the number of carbon atoms introduced into the flame, an FID is considered a quantitative counter of carbon atoms burned. There are a variety of advantages to using this detector such as, ease of use, stability, and the largest linear dynamic range of the commonly available GC detectors. The FID covers a calibration of nearly 5 orders of magnitude. FIDs are inexpensive to purchase and to operate. Maintenance is generally no more complex than changing jets and ensuring proper gas flows to the detector. Because of the stability of this detector internal standards are not required and sensitivity is adequate for meeting the acceptable reporting limits. However, FID is unable to confirm compounds and identification is only based on retention time. Early eluting analytes have a higher probability of interferences from matrix (Figure 2).
Mass Spectrometry (MS) provides unique spectral information for accurately identifying components eluting from the capillary column. As a compound exits the column it collides with high-energy electrons destabilizing the valence shell electrons of the analyte and it is broken into structurally significant charged fragments. These fragments are separated by their mass-to-charge ratios in the analyzer to produce a spectral pattern unique to the compound. To confirm the identity of the compound the spectral fingerprint is matched to a library of known spectra. Using the spectral patterns the appropriate masses for quantification can be chosen. Compounds with higher molecular weight fragments are easier to detect and identify for instance benzene (m/z 78), toluene (m/z 91) and the xylenes (m/z 106), whereas low mass fragments such as propane (m/z 29), methanol (m/z 31) and butane (m/z 43) are more difficult and may elute with matrix that matches these ions. Several disadvantages of mass spectrometers are the cost of equipment, cost to operate and complexity. In addition, these detectors are less stable and require an internal standard and have a limited dynamic range, which can lead to compound saturation.
Regardless of your method of detection, optimized HS and GC conditions are essential to properly resolve your target analytes and achieve the required detection limits. While MS may differentiate overlapping peaks the chances of interference of low molecular weight fragments necessitates resolution of target analytes chromatographically. FID requires excellent resolution for accurate identification and quantification.
Formed in 2015, Outco is a vertically integrated, licensed producer of medical cannabis in Southern California. Outco manages Outliers Collective, the first licensed dispensary continually operating in San Diego County. They operate the first licensed cultivation on Native American land in Southern California, the first cultivation building permit in Southern California and the first licensed extraction facility in San Diego County. Outco is on track to be the largest licensed producer of medical cannabis in Southern California.
The company prides themselves on attention to detail; the well versed team implements real science in their cultivation and extraction processes. Lincoln Fish, co-founder and chief executive officer of Outco, has more than 30 years of experience as an entrepreneur. Before entering the cannabis industry, Linc started and sold companies in the healthcare technology and nutraceutical spaces.
Fish’s experience with FDA regulations in nutraceuticals prepared him for running a business in such a tumultuous, highly regulated environment like cannabis. “One thing I took from the nutraceutical industry is how to present products to consumers and letting them know it is safe, effective and consistent,” says Fish. He says he noticed a serious lack of consistency in products. They tested 25 different vape cartridges, with their own oil, to find a consistent product they can use and know that consumers will safely and consistently get the same results. “There is a lot of room for more professionals and a lot of room for more science,” says Fish. “We try to position ourselves in a way that is consistent with where we think policy will go so we are very careful with recommendations from a scientific standpoint, patient information and product safety.”
According to Fish, they currently distribute cannabis products to about 75 licensed dispensaries in Orange County, San Diego and Los Angeles. With construction underway at their cultivation facility on Native American land, Fish says they plan to generate roughly 2600 pounds of cannabis each month. Gearing up for that in addition to the expanding recreational market requires some planning in advance, says Fish. Part of that plan is making sure quality controls are in place to keep consistency in the product quality and dosage. They are also actively seeking to open their distribution channels further.
“We are building out a full lab of our own in addition to third party testing to perform internal quality controls,” says Fish. Equipped with their own laboratory instrumentation like HPLC and GC, they hope to establish proper in-house quality controls as well as provide that resource to younger startup companies. As one of the founding partners of Canopy San Diego, an ancillary startup accelerator, Fish sees great potential in working with younger companies to get them off the ground. Fish met Outco’s vice president of extraction, Dr. Markus Roggen, at a Canopy San Diego event. It was there that they had the idea to build a startup accelerator for companies that actually touch the plant- extractors, cultivators and infused-product manufacturers, as opposed to a startup accelerator that would only help ancillary businesses.
Dr. Roggen, who is an organic chemist by training, heads up Outco’s supercritical CO2 extraction operation. “I came to the ‘art’ of cannabis extraction with an open, yet scientifically focused mind,” says Dr. Roggen. “My approach was to look past the myths and stories about extraction methods and focus on finding data, as there really wasn’t much available. I therefore, from the beginning, started to study the capabilities of our extraction equipment by chemometric methods.” Chemometrics is the science of relating measurements made on a chemical system or process to the state of the system via applications of mathematical methods. “Already the first sets of experiments showed that long-held beliefs in the cannabis community were inaccurate,” says Dr. Roggen. “For example the particle size of extracted material matters. Or that it is possible to preserve and even isolate terpenes by CO2 extraction methods.” With plans to have a full plant and analytical chemistry laboratory on site, they hope to perform more research that focuses on optimizing extraction processes.
Dr. Allison Justice leads their cultivation team with a background in greenhouse management and commercial horticulture. Dr. Justice says plants are grown, starting at a young age (seed or vegetative cutting), with the protection of biological control agents. “Biological control is a management strategy that entails the release of beneficial insects or fungi, such as parasitoids and predators, in order to suppress or regulate insect populations in greenhouses and grow rooms,” says Dr. Justice.
When implemented properly, this eliminates the need to use synthetic pesticides. “Biological control agents are not put in place to eradicate pest populations yet are applied as preventives to minimize plant damage and maintain their own populations.” They are constantly evaluating light types, spectrum and intensity to determine optimal ranges, according to Dr. Justice. They don’t use any pre-mixed “cannabis” nutrient supplements for their plants, instead they design an experiment to determine the desired levels and ratios of essential plant nutrients. “We have found it crucial to determine what ratios of nutrients the plant actually needs and by knowing this, we know how to manipulate the recipe determined by the plant’s given nutritional symptoms,” says Dr. Justice. Every type of adjustment in cultivation and extraction is based on results from experimentation rooted in legitimate science. Instead of guessing when it might be time to harvest, they use a water activity meter, logging and recording all the data to determine the appropriate time to trim and cure plants. Performing analytical testing at every step is key, says Fish.
Looking toward the recreational market, Fish sees an obvious opportunity to expand their wholesale operations substantially, with several larger new cultivation projects planned. “The key though is to produce flower and concentrate offerings with the same standards we employ for medical cannabis,” says Fish.
Sample preparation experts and analytical chemists are quick to suggest QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) to cannabis laboratories that are analyzing both flower and edible material for pesticides, mycotoxins and cannabinoid content. Besides having a quirky name, just what makes QuEChERS a good extraction technique for the complicated matrices of cannabis products? By understanding the chemistry behind the extraction and the methodology’s history, cannabis laboratories can better implement the technology and educate their workforce.
In 2003, a time when only eight states had legalized the use of medical cannabis, a group of four researchers published an article in the Journal of AOAC International that made quite the impact in the residue monitoring industry. Titled Fast and Easy Multiresidue Method Employing Acetonitrile Extraction/Partitioning and “Dispersive Solid-Phase Extraction” for the Determination of Pesticide Residues in Produce, Drs. Michael Anastassiades, Steven Lehotay, Darinka Štajnbaher and Frank Schenck demonstrate how hundreds of pesticides could be extracted from a variety of produce samples through the use of two sequential steps: an initial phase partitioning followed by an additional matrix clean up. In the paper’s conclusion, the term QuEChERS was officially coined. In the fourteen years that have followed, this article has been cited over 2800 times. Subsequent research publications have demonstrated its use in matrices beyond food products such as biological fluids, soil and dietary supplements for a plethora of analytes including phthalates, pharmaceutical compounds and most recently cannabis.
The original QuEChERS extraction method utilized a salt blend of 4 g of magnesium sulfate and 1 g of sodium chloride. A starting sample volume of 10 g and 10 mL of acetonitrile (ACN) were combined with the above-mentioned salt blend in a centrifuge tube. The second step, dispersive solid phase extraction (dSPE) cleanup, included 150 mg of magnesium sulfate and 25 mg of primary secondary amine (PSA). Subsequent extraction techniques, now known as AOAC and European QuEChERS, suggested the use of buffered salts in order to protect any base sensitive analytes that may be critical to one’s analysis. Though the pH of the extraction solvent may differ, all three methods agree that ACN should be used as the starting organic phase. ACN is capable of extracting the broadest range of analytes and is compatible with both LC-MS/MS and GC-MS systems. While ethyl acetate has also been suggested as a starting solvent, it is incompatible with LC-MS/MS and extracts a larger amount of undesirable matrix components in the final aliquot.
All laboratories, including cannabis and food safety settings, are constantly looking for ways to decrease their overhead costs, batch out the most samples possible per day, and keep their employees trained and safe. It is not a stretch to say that QuEChERS revolutionized the analytical industry and made the above goals tangible achievements. In the original publication, Anastassiades et al. established that recoveries of over 85% for pesticides residues were possible at a cost as low as $1 per ten grams of sample. Within forty minutes, up to twelve samples were fully extracted and ready to be analyzed by GC-MS, without the purchase of any specialized equipment. Most importantly, no halogenated solvents were necessary, making this an environmentally conscious concept. Due to the nature of the cannabis industry, laboratories in this field are able to decrease overall solvent usage by a greater amount than what was demonstrated in 2003. The recommended starting sample for cannabis laboratories is only one gram of flower, or a tenth of the starting volume that is commonly utilized in the food safety industry. This reduction in sample volume then leads to a reduction in acetonitrile usage and thus QuEChERS is a very green extraction methodology.
As with any analytical method, QuEChERS is not perfect or ideal for every laboratory setting. Challenges remain in the cannabis industry where the polarity of individual pesticides monitored in some states precludes them from being amenable to the QuEChERS approach. For cannabis laboratories looking to improve their pesticide recoveries, decrease their solvent usage and not invest their resources into additional bench top equipment, QuEChERS is an excellent technique to adopt. The commercialization of salt blends specific for cannabis flowers and edibles takes the guesswork out of which products to use. The growth of cannabis technical groups within established analytical organizations has allowed for better communication among scientists when it comes to best practices for this complicated matrix. Overall, it is definitely worth implementing the QuEChERS technique in one’s cannabis laboratory in order to streamline productivity without sacrificing your results.
The AOCS Annual Meeting is an international science and business forum on fats, oils, surfactants, lipids and related materials. The American Oil Chemist’s Society (AOCS) is holding their meeting in Orlando, Florida from April 30 to May 3, 2017. Last year’s meeting included discussions on best practices and the pros and cons of different extraction techniques, sample preparation, proficiency testing and method development, among other topic areas.
Posters on display for the duration of the Annual Meeting will discuss innovative solutions to test, preparing samples, discovering new compounds and provide novel information about the compounds found in cannabis. David Egerton, vice president of technical operations at CW Analytical (a cannabis testing laboratory in Oakland, CA), is preparing a poster titled Endogenous Solvents in Cannabis Extracts. His abstract discusses testing regulations focusing on the detection of the presence of solvents, despite the fact that endogenous solvents, like acetone and lower alcohols, can be found in all plant material. His study will demonstrate the prevalence of those compounds in both the plant material and the concentrated oil without those compounds being used in production.
The conference features more than 650 oral and poster presentations within 12 interest areas. This year’s technical program includes two sessions specifically designed to address cannabinoid analytics:
Lab Proficiency Programs and Reference Samples
How do you run a lab proficiency program when you cannot send your samples across state lines? What constituents do you test for when state requirements are all different? Are all pesticides illegal to use on cannabis? What pesticides should be tested for when they are mostly illegal to use? How do you analyze proficiency results when there are no standard methods? Learn about these and other challenges facing the cannabis industry. This session encourages open and active discussion, as the cannabis experts want to hear from you and learn about your experiences.
The need for high-quality and safe products has spurred a new interest in cannabinoid analytics, including sample preparation, pesticide, and other constituent testing. In this session, a diverse group of scientists will discuss developing analytical methods to investigate cannabis. Learn the latest in finding and identifying terpenes, cannabinoids, matrix effects, and even the best practice for dissolving a gummy bear.
Cynthia Ludwig, director of technical services at AOCS, says they are making great progress in assembling analytical methods for the production of the book AOCS Collection of Cannabis Analytical Methods. “We are the leading organization supporting the development of analytical methods in the cannabis industry,” says Ludwig. “Many of the contributors in that collection will be presenting at the AOCS Annual Meeting, highlighting some of the latest advances in analyzing cannabis.” The organization hopes to foster more collaboration among those in the cannabis testing industry.
In addition to oral and poster sessions, the 2017 Annual Meeting will feature daily networking activities, more than 70 international exhibitors, two special sessions, and a Hot Topics Symposia which will address how current, critical issues impact the future of the fats and oils industry.
Lezli Engelking founded the Foundation of Cannabis Unified Standards (FOCUS) in 2014 to protect public health, consumer safety, and safeguard the environment by promoting integrity in the cannabis industry through the use of standards. Standards are an agreed upon way of doing things and specify guidelines or requirements for producing goods or providing services, according to FOCUS.
Standards can take the form of a “reference document, which may include specifications, guidelines, conditions or requirements for products, operations, services, methods, personnel and systems on how to design, operate, manufacture or manage something.” Peter Maguire, VP of System Applications for Lighthouse Worldwide Solutions and committee chair of the FOCUS Cultivation standard, joined the organization wanting to make a positive impact on the industry that is in line with protecting people and medical patients. He sees so much variability in the industry and the need to homogenize standard operating procedures (SOPs). “I have worked with multiple cultivation facilities and a few of them have operating procedures in place but having them in place is only half the solution- it’s critical to have the right ones in place,” says Maguire. He has twenty years of experience in contamination control in manufacturing, before entering the cannabis industry.
The FOCUS cultivation standard was created by experts who have years of experience in both cannabis cultivation, good agricultural practices and in the tightly regulated pharmaceutical industry. “FOCUS created these guidelines as a sort of roadmap for success in business; You need to keep your employees healthy and your products safe to survive in the long term,” says Maguire. We sit down with Lezli Engelking to find out how the standards are created, what makes them significant and what businesses can gain by working with them.
CannabisIndustryJournal: Why are standards important?
Lezli: Standards are the international language for trade – they exist in every industry. “The U.S. Department of Commerce estimates that standards and conformity assessment impact more than 80% of global commodity trade.” FOCUS is not reinventing the wheel with what we are doing. We are simply adapting a business model the federal government already uses. In the 80s, when the heroin epidemic swept across the US, methadone clinics popped up in every state in the country within two years. The clinics were all operating under different state, city and county regulations – much like the cannabis industry is today. The federal government took a look at the situation and decided they needed a way to regulate these clinics in order to protect public health and safety. They released a Request For Proposal (RFP) looking for an organization to create voluntary-consensus standards and a third-party certification system for the methadone clinics. Commission on Accreditation of Rehabilitation Facilities (CARF) is the organization that answered and won that RFP. CARF continues to work with Health and Human Services to maintain the standards and provide third-party certification to the clinics today. FOCUS develops international, voluntary consensus standards and a third party certification program for the global cannabis industry based on the CARF model. This is extremely important, because of the National Technology Transfer and Advancement Act, (Public Law 104-115), signed into law March 7, 1996 by President Clinton. The act requires that all federal agencies use standards developed by voluntary-consensus standards bodies, instead of government-unique standards wherever possible. Perhaps even more importantly, the Act includes provisions that encourage federal agencies to partner with the private sector in the development of standards that not only help improve the efficiency and effectiveness of government, but also strengthen the U.S. position in the global marketplace.
CIJ: What exactly goes into developing a voluntary-consensus standard?
Lezli: Voluntary-Consensus refers to the type of standard and how it is developed. Everyone who participates in the development of voluntary-consensus standards does so on a voluntary basis. Committee members must come to a consensus on every point within the standard- down to every comma or semicolon. Once the development process is complete, the standards must undergo a 30-day public review period. The process for developing voluntary-consensus standards is designated by International Organization for Standardization (ISO). ISO has member agencies in 163 countries that participate in the development of standards. The American National Standards Institute (ANSI) is the American body for ISO. FOCUS follows all ISO/ANSI guidelines in the standards development process. This is extremely important because it means FOCUS standards are suitable for accreditation and adoption into regulations according to the National Technology Transfer and Advancement Act. All voluntary-consensus standards are developed under the principles of:
Openness| Participation in the standard development process is open to individuals with a stake in the standard who bring useful expertise along with the spirit and willingness to participate.
Balance| Focus stakeholder groups involve all stakeholder groups: industry, regulatory, quality assurance, medical, law enforcement, business, research, consumers, patients and the general public.
Voluntary-Consensus| Individual subcommittees of volunteers develop each area of the standard, offering their unique expertise to form a consensus. They are not paid for their participation.
Lack of Dominance| No party has dominant representation, or influence to the exclusion of fair and equitable consideration of other viewpoints.
CIJ: More specifically, how are the FOCUS standards developed?
Lezli: To create a baseline standard, FOCUS utilized World Health Organization (WHO) guidelines for Good Manufacturing Practices (GMP), Good Agricultural Practices (GAP), Good Laboratory Practices (GLP), Code of Federal Regulations (CFR) for pharmaceutical GMPs, nutraceutical GMPs, food safety standards, OSHA and HACCP. From there, applicable cannabis regulations from around the world were added. All of this information was compiled into auditor-style checklists. Each committee member was provided time to go edit, remove or add to items in the checklist on their own. Over the next two years, each of the eight committees had monthly meetings, going through and coming to a consensus on each line item of the standard. Once the committees completed development, the standards were open for a 30-day Public Review to collect comments and feedback. The first eight FOCUS standards, completed and ready for use, cover Cultivation, Retail, Extraction, Infused Products, Laboratory, Security, Sustainability and Packaging & Labeling.
FOCUS is currently recruiting committee members to begin development of five new cannabis standards later this year: Advertising/Marketing, Insurance, Banking/Finance, Patient Care and Research. Committees will receive a list of proposed suggestions for what should be considered in developing the standards. Each committee member will develop a list to select criteria they think should be included into the standard. FOCUS will compile the lists, then committees will go through the monthly standards development/vetting process for each line item in the standard.
CIJ: So what does a business have to gain by adopting a FOCUS standard?
Lezli: Compliance becomes easily manageable with the FOCUS software platform, integrating standards, training and SOPs into the everyday operations of the business. FOCUS certified clients could expect to reduce costs, reduce risk and reduce liability by assuring they are producing safe, quality and consistent products. FOCUS certification allows a business to differentiate themselves from their competitors, and prove to their patients and customers they can trust their products. Certification also allows businesses to access reasonable insurance rates and drives interest from investors.
FOCUS is here to partner with cannabis businesses. We are there to hold their hand, by providing guidance and assistance along every step of the way. Unlike state mandated audits that delineate what a business is doing right or wrong, FOCUS is an on-going compliance management system. We are here to make sure a business runs as efficiently as possible and take the guesswork out of compliance. Under FOCUS certification, a business receives ongoing consulting, customized SOPs, employee training and a documentation management software system to track and prove compliance.
CIJ: Can you give us an update on FOCUS’ progress in 2016?
Lezli: A large milestone for FOCUS this year, aside from completing version one of the standards, is choosing an appropriate software platform, (Power DMS) to house the standards and provide an ongoing compliance management system for our clients. Power DMS also houses regulatory standards for law enforcement; health care, federal aviation and fire departments, so most agencies in public health are already familiar with it. The familiarity and access to this platform is a huge benefit on the regulatory side. It allows first responders to access the schematics of a FOCUS certified client in the event of an emergency. This is crucial in the event of an explosion from extraction equipment, or a fire in a cultivation facility, as without first identifying where the hazards are, they will not access the facility. The FOCUS software platform allows first responders access to all pertinent information through computers in police cars, ambulances, or fire trucks.
For the industry, the FOCUS software platform is equally as impressive. Not only does the platform house the standards and all SOPs, it is also complete compliance management system. FOCUS certified clients have a simple management tool that houses all training and documentation, assuring all required compliance documentation can be easily accessed at any time. The platform also allows FOCUS certified clients to provide access to governing bodies in advance of state audits –streamlining the process and minimizing time and interruption caused by state audits. The FOCUS platform tracks all changes to required documents, provides real time updates on employee training, creates appropriate traceability logs, and provides updates on regulatory changes, including which SOPs need to be changed to maintain compliance. The platform allows FOCUS to be way more than an auditing company. FOCUS is a partnership in compliance for cannabis companies wanting to maintain good business practices and stay compliant with regulations.
We have about 140 new committee members that will assist existing committees with standards updates and participate in the development of the next set of FOCUS standards for advertising/marketing, banking/finance, research, patient care and insurance. All committees will convene before 2017.