Tag Archives: response

Beyond THC: Encouraging Cannabinoid and Terpene Production with LEDs

By Andrew Myers
No Comments

For years, tetrahydrocannabinol (THC) got all the attention. While THC certainly delivers its own benefits (such as relaxation and pain relief), there’s a whole host of other – and often overlooked – compounds found in cannabis with important benefits as well. THC is truly only the tip of the iceberg when it comes to cannabis’s potential.

As the cannabis industry evolves with changing consumer tastes and developing medical research, growers may employ techniques to boost cannabinoid and terpene profiles in their harvests – beyond merely focusing on THC. Advanced LEDs allow growers to elicit specific biological responses in cannabis crops, including increased concentrations of these naturally occurring chemical compounds.

The Foundation of Cannabis’s Effects
Whether used medicinally or otherwise, cannabis has changed our society and many of our lives – and there’s a collection of naturally occurring chemical compounds, known as cannabinoids and terpenes, to thank.

  • The cannabinoids THC and CBD are the most common and well-researched, however they are accompanied by more than 200 additional compounds, including cannabinol (CBN), cannabigerol (CBG) and tetrahydrocannabivarin (THCV), among others.
  • The cannabis plant also contains terpenes. These structures are responsible for giving flowers (including cannabis), fruits and spices their distinctive flavors and aromas. Common terpenes include limonene, linalool, pinene and myrcene.

Both cannabinoids and terpenes are found in the cannabis plant’s glandular structures known as trichomes. Look closely, and you’ll notice trichomes coating the cannabis flowers and leaves, giving the plant an almost frosty appearance.

macropistil/trichome
A macro view of the trichomes and pistils on the plant

Trichomes – which are found across several plant species – are a key aspect of a cannabis plant’s survival. The specific combination of metabolites produced by trichomes may attract certain pollinators and repel plant-eating animals. Moreover, trichomes (and specifically THC) may act as the plant’s form of sunscreen and shield the plant from harmful ultraviolet rays.

While they play an essential part in the cannabis plant’s lifecycle, trichomes are volatile and easily influenced by a range of environmental factors, including light, heat, physical agitation and time. Therefore, environment is a defining variable in the development of these important structures.

How LEDs Support Cannabinoid and Terpene Development in Crops
Spectrally tunable LEDs give indoor cannabis growers unparalleled control over their crops. As research has expanded about plants’ responses to the light spectrum, growers have discovered they are able to elicit certain physiological responses in the plant. This phenomenon is called photomorphogenesis. At its root, photomorphogenesis is a survival tactic – it’s how the plant responds to miniscule changes in its environment to increase the chances of reaching full maturity and, eventually, reproducing. While cultivated cannabis plants won’t reproduce at an indoor setting, growers can still use the light spectrum to encourage strong root and stem development, hasten the flowering process and the development of bigger, brightly colored flowers.

It makes sense that using the proper light spectrums may also have an impact on the production of specific cannabinoids and terpenes – an important factor when responding to highly specific consumer needs and desires, both within medical and adult-use markets.

Here are a few more reasons why utilizing full-spectrum LEDs can lead to higher quality cannabis:

  • Lower Heat, but the Same Intensity.
    When compared to HPS, fluorescent and other conventional lighting technologies, LEDs have a much lower heat output, but provide the same level of intensity (and often improved uniformity). This represents an enormous advantage for cannabis cultivators, as the lights can be hung much closer to the plant canopy without burning trichomes than they would be able to with other lighting technologies.
  • UV Light. Cannabinoids and terpenes are part of the cannabis plant’s natural defense mechanism, so it makes sense that lightly stressing plants can boost cannabinoid and terpene numbers. Some studies illustrate an increase in UV-B and UV-A light can lead to richer cannabinoid and terpene profiles.1 It’s a fine line to walk, though – too much UV can result in burned plants, which leads to a noticeable drop in cannabinoids.
  • Full-Spectrum Capabilities. The cannabis plant evolved over millions of years under the steady and reliable light of the sun. Full-spectrum is the closest thing to natural sunlight that growers will be able to find for indoor growing – and they’ve been shown to perform better in terms of cannabinoid development. A 2018 study titled “The Effect of Light Spectrum on the Morphology and Cannabinoid Content for Cannabis Sativa L.,” explored how an optimized light spectrum resulted in increased expression of cannabinoids CBG and THCV.2

This is the most important tip for indoor growers: your plants’ environment is everything. It can make or break a successful harvest. That means cultivators are responsible for ensuring the plants are kept in ideal conditions. Lights are certainly important at an indoor facility, but there are several other factors to consider that can affect your lights’ performance and the potency of your final product. This includes your temperature regulation, humidity, the density of plants within the space, CO2 concentration and many other variables. For the best results, your lights should be fully aligned with other environmental controls in your space. Nothing sabotages a once-promising crop like recurrent issues in the indoor environment.

solsticegrowop_feb
Indoor cultivation facilities often use high powered lights that can give off heat

Cannabinoids and terpenes take time to develop – so cultivators will want to avoid harvesting their plants too early. On the other hand, these compounds begin to degrade over time, so growers can’t wait too long either.

Cultivators seeking potent cannabinoid and terpene profiles must find a happy medium for the best results – and the best place to look is where cannabinoids and terpenes develop: the trichomes. With a microscope, cultivators can get up close and personal with these sparkly structures. Younger plants begin with clear trichomes, which eventually become opaque and change to amber. Once your plants show amber-hued trichomes, they’re ready for harvest.

The truth here is that there’s no perfect formula to elicit show-stopping cannabinoids and dizzying terpenes with every harvest. A lot of cannabis cultivation is based around trial-and-error, finding what works for your space, your business and your team. But understanding the basics around indoor environmental controls like lighting and temperature – and how they can affect the development of cannabinoids and terpenes – is an excellent place to start. Using high quality equipment, such as full-spectrum LED lighting can boost both cannabinoid and terpene production, resulting in richer, more potent and higher quality strains.


References:

  1. Lyndon, John, Teramura, Alan H., Coffman, Benjamin C. “UV-B Radiation Effects on Photosynthesis, Growth and Cannabinoid Production of Two Cannabis Sativa Chemotypes.” August 1987. Photochemistry and photobiology. Web. https://onlinelibrary.wiley.com/doi/abs/10.1111/j.1751-1097.1987.tb04757.x?&sid=nlm%3Apubmed
  2. Magagnini G., Grassi G., Kotiranta, S. “The Effect of Light Spectrum on the Morphology and Cannabinoid Content of Cannabis sativa L.” 2018. Medical Cannabis and Cannabinoids. Web: https://www.karger.com/Article/FullText/489030

Aphria Fights Shortseller Allegations Of Insider Double Dealing

By Marguerite Arnold
2 Comments

Two reports published by short selling stock firm Quintessential Capital Management and forensic investor research firm Hindenburg Research on December 3, charges that Canadian LP Aphria, has bought overinflated assets in Latin America and in Florida from shell companies owned by company insiders. Added to the lingering controversy is the purchase of the German Nuuvera this spring (a company also partly owned by Aphria brass), and the reports went over like a bombshell. Globally.

However, the story has already spread far beyond one company. And the response in the market has rocked the industry for most of December.

Aphria’s shares tanked, and dragged everyone down with them. Several class action law firms in the United States began promptly looking for aggrieved shareholders.

The response by the firm? A promise of an immediate line-by-line rebuttal, due out in the second week of December. So far, however, despite news of an additional Aphria purchase in Paraguay, the rebuttal report has not been issued.

Why Is This So Damaging? Or Is It?

Aphria’s stocks promptly took a dive that halved their value although they began to recover after Aphria management appointed an independent third party firm to review the claims.

Worse, however, the entire industry saw a hit too. This report affected investor confidence across the industry. And although the hit appears to be temporary, the unfolding scenario is a perfect example of why volatility in the market is scaring away not only more conservative female retail investors but larger institutional ones that the industry is now courting assiduously as medical cannabis begins to be integrated into health systems particularly in Europe.

Why?

Bottom line? As the big cannabis companies are listing on the larger, foreign exchanges, including the NYSE and Deutsche Börse, the scrutiny is getting more direct and granular.Despite the stratospheric market caps of all the major Canadian LPs in particular, not to mention enormous expenditures for the last several years (on property and other acquisitions), the revenue picture, as other stock analysts and publications such as the normally neutral Motley Fool recently pointed out, at least so far does not justify the same. Bulk sales to a hospital, establishing a cultivation or processing facility or even getting import licenses may set one up to do business however, but it is not an automatic route to ongoing and expanding sales. And that is the key to high valuations that are rock solid and beyond the scope of such allegations.

For the moment, that pressure, particularly in global medical markets, is falling first on patients if not doctors. Not the industry.

That said, this has been a major building year. Recreational cannabis has just become legal in Canada. And in Europe, reform is still in the process of happening.

It is also a charge if not frustration that has been growing, however, against all the public cannabis companies as valuations shoot into the stratosphere. Forensic and investigative firms, particularly in Europe and the United States have been focusing on the industry for close to a year now. As a result even when firms successfully rebut charges of fraud, they are looking at different valuations from analysts at least in the short term.

Bottom line? As the big cannabis companies are listing on the larger, foreign exchanges, including the NYSE and Deutsche Börse, the scrutiny is getting more direct and granular.

Are “Short Seller” Reports Unbiased?

For all of the focus on short seller reports in this industry, however, no matter the accuracy of some of their claims, here is the next issue:

Short sellers make money by betting against not only individual firms but the industry itself. They benefit financially in other words, from volatility in the market and arbitraging even small changes in price. Even if their reports cause the same.

Such reports as a result are also not “unbiased” as industry coverage in the press is supposed to be, no matter how much more time sometimes goes into the reporting and preparation of the same.

And no matter that this industry is now going into its fifth year, there is still lingering scepticism that, in the case of Aphria, has so far not only fallen on the individual firm in question, but then rebounds across the industry, unfairly hurting all firms in this space.