Tag Archives: flavonoids

Cannabis Vape Clarity: How to Help Consumers Shop Smart

By Vitaly Mekk
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Between 2020 and 2021, cannabis vape cartridges saw 25% year-over-year growth and all-in-one vapes grew a whopping 64% as a category during the same time period. Two years later, the vape space shows no signs of slowing down. There are more strain and extraction style options than ever, not to mention advances in consumption device technology.

That huge growth and diversification means consumers have a lot of choices and decisions to make. Cutting through that noise takes a little know-how, however. For a shopper who’s hesitant or overwhelmed when comparing multiple vape options, brands and budtenders can start with some informative, friendly education on how terpenes deserve their consideration.

Why are terpene profiles so important? Imagine going into a wine store and only getting a recommendation for red or white at different price points. You might end up with something delicious that fits your budget, but you’re missing out on deeper nuances that could enrich the experience. Consumers don’t know what they don’t know. But brands can do better.

Terpenes and the Entourage Effect for Vape Products

Instead of the indica-sativa-hybrid trichotomy, focus on the kind of experience you want to have. Understanding terpenes can go a long way to helping consumers find the strains that produce their favorite flavors, scents and sensations. Also key is understanding how terpenes work together in different strains—a phenomenon known as the entourage effect.

Figure 1: The chemical structure of cannabidiol.
The chemical structure of cannabidiol (CBD)

The entourage effect is often simplified to a collaboration between major and minor cannabinoids like CBD, CBG, CBN and THCV. But a true entourage effect isn’t just the combination of different cannabinoids. It’s the combination of terpenes, cannabinoids, flavonoids and other chemicals such as esters.

Why does this matter? The best cannabis represents the best of each of these elements, not simply terpenes and cannabinoids. As a result, the best cannabis vapes are the ones that can preserve all of these elements and produce an entourage effect.

This is where it’s worth pointing out the pros and cons of low-end cannabis vape products. Cheaper strain profiles typically feature fewer ingredients, including the terpenes, flavonoids and esters that contribute to a distinctive entourage effect. It’s not a matter of upselling: Sure, the price point might be attractive, but one-size-fits-all weed isn’t the experience most consumers are ultimately looking for.

How Extraction Methods Impact Cannabinoids, Terpenes and Other Chemical Compounds

The loss of crucial members of a cannabis cultivar’s entourage is one reason extraction methods make such a big difference. It can be hard for many consumers to cut through the jargon of resin vs. rosin, CO2 vs. butane, ice vs. heat and so forth. But one simple way to break it down is this: botanical, aka distillate, terpene profiles typically have 30-60 ingredients. Meanwhile, cannabis-derived terpene profiles will have over 100.

A live rosin vape by Bloom

On the high end of that spectrum is rosin. Rosin products typically will have the largest number and range of flavor components. That’s one reason this category is so popular with cannabis connoisseurs who are particularly dialed into the flavors and effects of the products they consume, vape carts included.

Why Hardware Matters

There are two primary types of vape consumption hardware—510 thread batteries combined with various brands of vape carts, or all-in-one vape devices that come pre-loaded with proprietary concentrates. 510 thread systems were carried over from the nicotine vape space, and quickly became the industry standard because they allow consumers to try vape carts from many different brands with the same rechargeable battery. There is a caveat: Temperature variance can affect the consumer’s experience for the worse, particularly with sensitive terpene boiling points.

All-in-one devices have been gaining popularity because they’re so easy to use. They come pre-loaded with concentrates and don’t require any charging cables or changing device settings. All-in-ones are typically pre-set to a tight temperature range well-suited to their unique concentrate formula—all a consumer has to do is put the device to their lips and pull.

A quality piece of vape hardware won’t produce a burnt flavor or irritate the nose. The flavor will come through cleanly and the draw should be smooth and consistent. Indeed, the latter is another sign of quality vape hardware consumers should know to look for—the resistance of that pull can vary widely between brands. The concentrate should draw easily from the chamber. If it feels like sucking a hefty milkshake through a straw, both the hardware and the concentrates inside are probably not the highest quality.

Whichever terpene profile, strain, extraction technique or device category is on a customer’s mind, it’s critical for brands and budtenders to help guide consumers to their individual best-fit cannabis vape experience.

UT-Arlington and UT-El Paso to Evaluate Phytochrome Manipulation in Hemp

By Cannabis Industry Journal Staff
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The Collaborative Laboratories for Environmental Analysis and Remediation (CLEAR) at the University of Texas at Arlington (UT-Arlington) and the University of Texas at El Paso (UT-El Paso) has begun collaborating with Curtis Mathes Grow Lights (CMGL), a subsidiary of the Curtis Mathes Corporation, and the hemp genetics company ZED Therapeutics. The research will involve characterizing the phytochemical effects of phytochrome manipulation using various LED horticultural lights of differing light spectrum, and novel high-yielding varietals of hemp. All of the hemp plants will be grown by renowned geneticists Adam Jacques, Christian West, and Oriah Love of ZED Therapeutics under the CMGL Harvester LED lights at their Oregon facility. Drs. Kevin Schug and Zacariah Hildenbrand will oversee the analysis of the corresponding samples for the expression of terpenes, flavonoids, and other classes of therapeutic compounds. The expression of 15 primary cannabinoid species will be performed concurrently by Matthew Spurlock of ZED Therapeutics.

“Since its inception, CLEAR has focused almost exclusively on improving environmental stewardship in the energy sector. It is nice to now diversify into the horticultural industry to better understand how chemically-diverse plants like hemp respond to different environmental-friendly LED lights,” says Professor Kevin Schug, Shimadzu Distinguished Professor of Analytical Chemistry and co-founder and the Director of CLEAR.

Hemp has recently garnered significant attention in the mainstream media as a result of the medicinal benefits of its primary natural constituent, CBD. The collaboration amongst UT-Arlington, UT-El Paso, CMGL and ZED Therapeutics is designed to better understand how the variable of light can influence the expression of other medicinal elements.

“We are incredibly excited about our growing collaborations with UT-Arlington, UT-El Paso, and ZED Therapeutics,” says CMGL’s COO, Robert Manes, “This particular research exploring phytochrome manipulation in hemp may unlock new lighting protocols whereby the modulation of different wavelengths is associated with the expression of different phytochemical profiles.”

This research also has the potential to discover novel molecules that may be present in the ZED Therapeutic hemp varietals using high-resolution exploratory instruments that are unique to the laboratories of CLEAR, such as Liquid Chromatography Quadrupole Time-of-Flight Mass Spectrometry (LC-QTOF-MS).

“We are always searching for new ways to expand our genetic catalogue and it will be interesting to see what sort of effects light modulation have on cannabinoid, terpene, and flavonoid expression,” says Adam Jacques of ZED Therapeutics, “Phytochrome manipulation, and any resulting epigenetic effects, is a poorly understood principle of horticulture and we see a significant opportunity with this research to unearth new knowledge.”

“Hemp is a unique plant both in its light spectrum adaptation and the wide range of phytochemicals it can potentially produce,” says Christian West of ZED Therapeutics, “I’ve been waiting my whole career to be a part of this research and having the lighting knowledge of CMGL combined with the analytical power of UT-Arlington and UT-El Paso is priceless in expanding our understanding of the plant.”

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Clear vs. Pure: How Fallacies and Ignorance of Extraction Misrepresent the Cannabis Flower

By Dr. Markus Roggen
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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.

Precise control of extraction conditions leads to variable, customized concentrates. THC-A crumble, terpene-rich vape oil, THC sap (from left to right).

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.


[1] Prof. Meiri; lecture at MedCann 2017

[2] ElSohly, Slade, Life Sciences 2005, 539

[3] Whiting, et. al., JAMA. 2015, 2456

[4] Andre, Hausman, Guerriero, Frontiers in Plant Science 2016, 19

[5] Hazekamp, et. al., Chemistry of Cannabis Chapter 3.24; 2010 Elsevier Ltd.

[6] Ben-Shabat, et al.; Eur J Pharmacol. 1998, 23

[7] Mechoulam, et al.; Nat Prod Rep. 1999, 131

[8] Medical and Research Grade chemicals are generally of purities exceeding 99.9%

[9] Bomgardner, Chemical & Engineering News 2017, 20

[10] Winterization is the industry term for what is correctly referred to as precipitation.

[11] Year-over changes to market shares in Colorado 2015 to 2016: Concentrates 15% to 23%; Flower 65% to 57%, BDS Analytics, Marijuana Market Executive Report, 2017

[12] Further reading about the whole extraction process: B. Grauerholz, M. Roggen; Terpene and Testing Magazine, July/Aug. 2017

[13] Further reading about optimizing CO2 extraction: M. Roggen; Terpene and Testing Magazine, May/June 2017, 35