On December 20, President Trump signed the Agriculture Improvement Act of 2018 (the Farm Bill) into law, which included an important change to the way federal agencies regulate hemp farming and production. The Farm Bill essentially removes hemp-derived cannabidiol (CBD) from the Controlled Substances Act in states that choose to regulate it. It strips the Drug Enforcement Agency’s (DEA’s) authority from outlawing hemp and gives states the ability to regulate hemp markets on their own, with approval from the United States Department of Agriculture (USDA).
This gives the USDA the authority to regulate hemp farming, providing for things like access to banks, insurance, grants, certifications and gets rid of the need for a pilot program, which was previously the case under the 2014 Farm Bill. It also defines hemp a little better, to include cannabinoids, derivatives and extracts.
According to Aaron Smith, executive director of the National Cannabis Industry Association (NCIA), the signing of the Farm Bill is a crucial step towards full legalization. “The lifting of the federal ban on non-psychoactive hemp is a concrete sign that the ‘reefer madness’ which first led to its criminalization is finally coming to an end,” says Smith. “This Farm Bill is a step in the right direction for comprehensive cannabis policy reform and will help fuel discussions in Congress about the best ways to end federal prohibition and create a regulated national cannabis market.”
However, one particularly important caveat needs to be mentioned: The Food and Drug Administration (FDA) still retains regulatory authority over CBD products. In a statement released the same day that the Farm Bill was signed, the FDA addressed their oversight capabilities. “We’ll take enforcement action needed to protect public health against companies illegally selling cannabis and cannabis-derived products that can put consumers at risk and are being marketed in violation of the FDA’s authorities,” reads the FDA statement. “The FDA has sent warning letters in the past to companies illegally selling CBD products that claimed to prevent, diagnose, treat, or cure serious diseases, such as cancer. Some of these products were in further violation of the FD&C Act [Federal Food, Drug and Cosmetics Act] because they were marketed as dietary supplements or because they involved the addition of CBD to food.”
The FDA also notes that there are circumstances “in which certain cannabis-derived compounds might be permitted in a food or dietary supplement.” That means they are exploring opportunities for companies to develop, manufacture and market legal CBD products without going through the extensive drug approval process.States need to establish programs approved by the USDA and companies need to cooperate with the FDA, taking the necessary steps to get their products and marketing approved.
In the food ingredients realm, they have already taken steps to approve hulled hemp seeds, hemp seed protein and hemp seed oil as generally recognized as safe (GRAS). “Therefore, these products can be legally marketed in human foods for these uses without food additive approval, provided they comply with all other requirements and do not make disease treatment claims,” reads the FDA statement.
The Farm Bill signing opened the doors for hemp cultivation and production in the United States. It allows farmers to access the same goods and services extended to other commodities farming, it makes conducting business easier across state lines, it will pave the way for more research into hemp as an effective medicine and helps to end the debate over hemp’s legality. But this doesn’t mean any business can just start producing and selling CBD products. States need to establish programs approved by the USDA and companies need to cooperate with the FDA, taking the necessary steps to get their products and marketing approved.
In the coming months and years, we will see which states decide to develop hemp cultivation programs and how the proliferation of hemp-derived products will evolve under FDA regulatory oversight.
Imagine this: you are taking medication for cancer pain. One day, it works perfectly. The next, you feel no relief. On some days, you need to take three doses just to get the same effect as one. Your doctor can’t be completely positive how much active ingredient each dose contains, so you decide for yourself how much medication to take.
Doesn’t seem safe, right? It is crucial that doctors know exactly what they are prescribing to their patients. They must know that their patients are receiving the exact same dose of medication in their prescription each time they take it, and that their medication contains only the intended ingredients.
consistency is key to creating products that are safe for consumers.In the cannabis industry, lack of certainty on these important factors is a major problem for drug manufacturers as they attempt to incorporate cannabidiol (CBD), a compound found in cannabis that has no psychoactive effects but many medical benefits, into pharmaceutical drugs.
When using these compounds as medications, purity is essential. Cannabis contains a wide variety of compounds. Delta-9 tetrahydrocannabinol (THC) is the most well-known compound and its main psychoactive one1. Safety regulations dictate that consumers know exactly what they are getting when they take a medication. For example, their CBD-based medications should not contain traces of THC.
The cannabis industry greatly needs a tool to ensure the consistent extraction and isolation of compounds. In 2017, the cannabis industry was worth nearly $10 billion, and it is expected to grow $57 billion more in the next decade2. As legalization of medical cannabis expands, interest in CBD pharmaceuticals is likely to grow.
If compounds such as CBD are going to be used in pharmaceutical drugs, consistency is key to creating products that are safe for consumers.
CBD is a non-psychoactive compound that makes up 40 percent of cannabis extracts1. It is great for medical applications because it does not interfere with motor or psychological function. Researchers have found it particularly effective for managing cancer pain, spasticity in multiple sclerosis, and specific forms of epilepsy3.
Other compounds derived from cannabis, such as cannabichromene (CBC) and cannabigerol (CBG), may also be beneficial compounds with medical applications. CBC is known to block pain and inflammation, and CBG is known for its use as a potential anti-cancer agent1.
Along with these compounds that provide medical benefits, there are psychoactive compounds that are used recreationally, such as THC.
“It will definitely be an advantage to have cannabis-based medications with clearly defined and constant contents of cannabinoids,” says Kirsten Müller-Vahl, a neurologist and psychiatrist at Hannover Medical School in Germany.
Creating a Standard Through Centrifugal Partition Chromatography
To obtain purified compounds from cannabis, researchers need to use technology that will extract the compounds from the plant.
Many manufacturers use some sort of chromatography technique to isolate compounds. Two popular methods are high performance liquid chromatography (HPLC) and flash chromatography. These methods have their places in the field, but they cannot be effectively and cost-efficiently scaled to isolate compounds. Instead, HPLC and flash chromatography may be better suited as analytical tools for studying the characteristics of the plant or extract. As cannabis has more than 400 chemical entities4, compound isolation is an important application.
This method is highly effective for achieving both high purity and recovery.Although molecules such as CBD can be synthesized in the lab, many companies would rather extract the compounds directly from the plant. Synthesized molecules do not result in a completely pure compound. The result, “is still a mixture of whatever cannabinoids are coming from a particular marijuana strain, which is highly variable,” says Brian Reid, chief scientific officer of ebbu, a company in Colorado that specializes in cannabis purification.
Currently, there is only one method available to researchers that completely allows them to isolate individual compounds: centrifugal partition chromatography (CPC).
The principle of CPC is similar to other liquid chromatography methods. It separates the chemical substances as the compounds in the mobile phase flow through and differentially interact with the stationary phase.
Where CPC and standard liquid chromatography differs is the nature of the stationary phase. In traditional chromatography methods, the stationary phase is made of silica or other solid particles, and the mobile phase is made of liquid. During CPC, the stationary phase is a liquid that is spun around or centrifuged to stay in place while the other liquid (mobile phase) moves through the disc. The two liquid phases, like oil and water, don’t mix. This method is highly effective for achieving both high purity and recovery. Chemists can isolate chemical components at 99 percent or higher purity with a 95 percent recovery rate5.
“CPC is ideal for ripping a single active ingredient out of a pretty complex mixture,” says Reid. “It’s the only chromatographic technique that does that well.”
The Need for Pure Compounds
High levels of purity and isolation are necessary for cannabis to be of true value in the pharmaceutical industry. Imagine relying on a medication to decrease your seizures, and it has a different effect every time. Sometimes there may be traces of psychoactive compounds. Sometimes there are too much or too little of the compound that halts your seizures. This is not a safe practice for consumers who rely on medications.“It’s hard to do studies on things you can’t control very well.”
Researchers working with cannabis desperately need a technology that can extract compounds with high purity rates. It is hard to run a study without knowing the precise amounts of compounds used. Reid uses a Gilson CPC 1000 system at ebbu for his cannabinoid research. With this technology, he can purify cannabinoids for his research and create reliable formulations. “Now that we have this methodology dialed in we can make various formulations —whether they’re water-soluble, sublingual, inhaled, you name it —with very precise ratios of cannabinoids and precise amounts of cannabinoids at the milligram level,” says Reid.
Kyle Geary, an internist at the University of Illinois at Chicago, is currently running a placebo-controlled trial of CBD capsules for Crohn’s disease. This consistent isolation is helpful for his research, as well. “Ideally, the perfect study would use something that is 100 percent CBD,” says Geary. “It’s hard to do studies on things you can’t control very well.”
The State of the Industry
While CBD is not considered a safe drug compound under federal law in the United States6, 17 states have recently passed laws that allow people to consume CBD for medical reasons7. Half of medicinal CBD users solely use the substance for treatment, a recent survey found8. As the industry quickly grows, it is crucial that consumer safety protocol keeps pace.
In June, the US Food and Drug Administration (FDA) approved the first drug that contains a purified drug substance from cannabis, Epidiolex9. Made from CBD, it is designed to treat Dravet Syndrome and Lennox-Gastaut syndrome, two rare forms of epilepsy. FDA Commissioner Scott Gottlieb said in the news release that although the FDA will work to support the development of high-quality cannabis-based products moving forward, “We are prepared to take action when we see the illegal marketing of CBD-containing products with serious, unproven medical claims. Marketing unapproved products, with uncertain dosages and formulations can keep patients from accessing appropriate, recognized therapies to treat serious and even fatal diseases.”
The industry should be prepared to implement protocols to ensure the quality of their CBD-based products. The FDA has issued warnings in recent years that some cannabinoid products it has tested do not contain the CBD levels their makers claim, and consumers should be wary of such products10. It’s hard to know when or if the FDA will begin regulating CBD-based pharmaceuticals. However, for pharma companies serious about their reputation, there is only one isolation method that creates reliable product quality: CPC.
National Institute on Drug Abuse. (2015, June 24). The Biology and Potential Therapeutic Effects of Cannabidiol. Retrieved from https://www.drugabuse.gov/about-nida/legislative-activities/testimony-to-congress/2016/biology-potential-therapeutic-effects-cannabidiol
Atakan, Z. (2012). Cannabis, a complex plant: Different compounds and different effects on individuals. Therapeutic Advances in Psychopharmacology,2(6), 241-254. doi:10.1177/2045125312457586
Gilson. (n.d.). Centrifugal Partition Chromatography (CPC) Systems. Retrieved from http://www.gilson.com/en/AI/Products/80.320#.WzVB2lMvyMI
Mead, A. (2017). The legal status of cannabis (marijuana) and cannabidiol (CBD) under US law. Epilepsy & Behavior, 70, 288-291.
ProCon.org. (2018, May 8). 17 States with Laws Specifically about Legal Cannabidiol (CBD) – Medical Marijuana – ProCon.org. Retrieved from https://medicalmarijuana.procon.org/view.resource.php?resourceID=006473
Borchardt, D. (2017, August 03). Survey: Nearly Half Of People Who Use Cannabidiol Products Stop Taking Traditional Medicines. Retrieved from https://www.forbes.com/sites/debraborchardt/2017/08/02/people-who-use-cannabis-cbd-products-stop-taking-traditional-medicines/#43889c942817
U.S. Food & Drug Administration. (2017). Public Health Focus – Warning Letters and Test Results for Cannabidiol-Related Products. Retrieved from https://www.fda.gov/newsevents/publichealthfocus/ucm484109.htm
In the United States, the idea of transporting cannabidiol (CBD), let alone medical cannabis across state lines is still verboten. As a result, a patchwork of very different state industries has sprung up across the map, with different regulatory mandates everywhere. While it is very clear that California will set the tone for the rest of the United States in the future, that is not a simple conversation. Even in-state and in the present.
In the meantime, of course, federal reform has yet to come. And everywhere else, there is a very different environment developing.
In Canada, “territorial” reform does mean there will be different quality or other regulatory guidelines depending on where you are. The main difference between the territories appears to be at point of retail – at least for now. Notably, recreational dispensaries in the East will be controlled by the government in an ABC package store model. That will not be the case across all provinces however. Look for legal challenges as the rec market gets underway.
In Europe, the conversation is already different – and based on the realities of geopolitics. Europe is a conglomeration of federally governed nation-states rather than more locally administered territories, supposedly under federal leadership and control (as in the US). That said, there is common EU law that also governs forward reform everywhere now, just as it hindered national drug reform until a few years ago on the cannabis front.
However, now, because European countries are also moving towards reform but doing so in very different ways in an environment with open borders, the market here is developing into one of the most potentially fertile (and experienced) ex-im markets for the cannabis plant anywhere. On both the consumer and medical fronts, even though these labels mean different things here than they do elsewhere.
Medical reform in Europe basically opens the conversation to a regulated transfer of both non and fully loaded narcotic product across sovereign national borders. This is already happening even between nation-states where medical (read THC infused) cannabis is not federally legal yet, but it is has been accepted (even as a highly restricted drug). This means that Europe has already begun to see transfer of both consumer and medical product between states. In the former case, this is also regulated under food and cosmetic safety laws.
Cannabis in this environment is “just another drug.”While a lot of this so far has been via the strategic rollout of the big Canadian LPs as they attempt to carve up European cannabis territory dominance and distribution like a game of Risk, it is not limited to the same.
Pharmaceutical distributors across Europe are hip to the fact, now, that the continent’s largest drug market (Germany) has changed the law to cover cannabis under insurance and track its issuance by legal prescription. So is everyone in the non-medical CBD game.
As a result, even mainstream distributors are flocking to the game in a big way. Cannabis in this environment is “just another drug.” If not, even more significantly, a consumer product.
The race for Europe is on. And further, in a way that is not being seen anywhere else in the world right now. And not just in pharmacies. When Ritter Sport begins to add cannabis to its famous chocolate (even if for now “just” CBD) for this year’s 4/20 auf Deutschland, you know there is something fundamental and mainstream going on. Lidl – a German discount grocery chain that stretches across Europe, has just introduced CBD-based cannabis edibles – in Switzerland.
As a result of this swift maturation, it is also creating from the beginning a highly professional industry that is essentially just adding cannabis to a list of pharmaceutical products already on a list. Or even just other grocery (or cosmetic) items.
In general, and even including CBD, these are also products that are produced somewhere in Europe. As of this year, however, that will include more THC from Portugal, Spain and most certainly Eastern Europe. It will also mean hemp producers from across the continent suddenly have a new market. In many different countries.
This means that the industry itself is far more sophisticated and indeed used to the language and procedures of not only big Euro pharma, but also mainstreamed distribution (straight to pharmacy and even supermarket chains).
It also means, however, understanding the shifting regulations. In general, the focus on ex-im across Europe is also beginning to standardize an industry that has been left out of the global game, on purpose, for the last 100 years. Medical cannabis, grown in Spain under the aegis of Alcaliber (a major existing opioid producer) can enter Germany thanks to the existing partnership with Spektrum and Canopy, who have a medical import license and source cannabis from several parts of Europe at this point. It also means that regular hemp producers, if they can establish the right brand and entry points, have a new opportunity that exists far outside of Switzerland, to create cross-European presence.
And all of this industry regulation is also setting a timeline, if not deadline, on other kinds of reform not seen elsewhere, anywhere, yet.
According to a press release, last week GW Pharmaceuticals’ drug Epidiolex received a positive FDA panel review, which is an encouraging and important step towards getting the drug approved by the U.S. Food and Drug Administration and on the market in the United States. Epidiolex is an anti-epilepsy drug, taken in a syrup form, with the main active ingredient being cannabidiol (CBD), and less than 0.1 % THC.
The drug is targeted to treat Dravet syndrome (DS) and Lennox-Gastaut syndrome (LGS) a rare early-onset type of epilepsy found in children, according to Reuters. FDA staff said the drug “reduces seizure frequency in patients with drug-resistant LGS or DS while maintaining a predictable and manageable safety profile.”
GW Pharmaceuticals, founded in 1998 and based in London, is a biopharmaceutical company that has made headlines previously for developing cannabis-derived drugs. Sativex, one of the first drugs they developed, is derived from cannabis, but was not approved by the FDA. It is however available in other parts of the world, such as the EU, Israel and Canada.
If Epidiolex actually gets approval by the FDA, it will be the first-ever cannabis-derived drug available via prescription in all of the United States. According to Justin Gover, chief executive officer of GW Pharmaceuticals, this is a momentous breakthrough for the company. “We are pleased by the Advisory Committee’s unanimous recommendation to approve Epidiolex, which would provide an important treatment option for patients with LGS and Dravet syndrome, two of the most severe and treatment-resistant forms of epilepsy,” says Gover “This favorable outcome marks an important milestone in our company’s unwavering commitment to address the significant unmet need for patients with LGS and Dravet syndrome and our resolve to study Epidiolex under the highest research and manufacturing standards. We look forward to our ongoing discussions with the FDA as it continues to review the Epidiolex NDA.”
According to the GW press release, the Peripheral and Central Nervous System Drugs Advisory Committee of the FDA unanimously recommended supporting the approval of the New Drug Application (NDA) for the drug. That advisory committee is sort of like an independent panel; their unanimous vote doesn’t necessarily mean the drug will get approved, but the FDA takes their decision into consideration when approving new drugs. So this panel recommendation is certainly a good sign and shows this drug could potentially be on the path to FDA approval.
Many physicians today treat their patients with cannabidiol (CBD, Figure 1), a cannabinoid found in cannabis. CBD is more efficacious over traditional medications, and unlike delta-9 tetrahydrocannbinol (THC), the main psychoactive compound in cannabis, CBD has no psychoactive effects. Researchers have found CBD to be an effective treatment for conditions such as cancer pain, spasticity in multiple sclerosis, and Dravet Syndrome, a form of epilepsy.
Most manufacturers use chromatography techniques such as high performance liquid chromatography (HPLC) or flash chromatography to isolate compounds from natural product extracts. While these methods are effective for other applications, they are not, however, ideal for CBD isolate production. Crude cannabis oil contains some 400 potentially active compounds and requires pre-treatment prior to traditional chromatography purification. Both HPLC and flash chromatography also require silica resin, an expensive consumable that must be replaced once it is contaminated due to irreversible absorption of compounds from the cannabis extract. All of these factors limit the production capacity for CBD manufacturers.
Additionally, these chromatography methods use large quantities of solvents to elute natural compounds, which negatively impacts the environment.
A Superior Chromatography Method
Centrifugal partition chromatography (CPC) is an alternative chromatography method that can help commercial CBD manufacturers produce greater quantities of pure CBD more quickly and cleanly, using fewer materials and generating less toxic waste. CPC is a highly scalable CBD production process that is environmentally and economically sustainable.
The mechanics of a CPC run are analogous to the mechanics of a standard elution using a traditional chromatography column. While HPLC, for instance, involves eluting cannabis oil through a resin-packed chromatography column, CPC instead elutes the oil through a series of cells embedded into a stack of rotating disks. These cells contain a liquid stationary phase composed of a commonly used fluid such as water, methanol, or heptane, which is held in place by a centrifugal force. A liquid mobile phase migrates from cell to cell as the stacked disks spin. Compounds with greater affinity to the mobile phase are not retained by the stationary phase and pass through the column faster, whereas compounds with a greater affinity to the stationary phase are retained and pass through the column slower, thereby distributing themselves in separate cells (Figure 2).
A chemist can choose a biphasic solvent system that will optimize the separation of a target compound such as CBD to extract relatively pure CBD from a cannabis extract in one step. In one small-scale study, researchers injected five grams of crude cannabis oil low in CBD content into a CPC system and obtained 205 milligrams of over 95% pure CBD in 10 minutes.
The solvents used in chromatography, such as methanol and acetonitrile, are toxic to both humans and the environment. Many environmentally-conscious companies have attempted to replace these toxic solvents with greener alternatives, but these may come with drawbacks. The standard, toxic solvents are so common because they are integral for optimizing purity. Replacing a solvent with an alternative could, therefore, diminish purity and yield. Consequently, a chemist may need to perform additional steps to achieve the same quality and quantity achievable with a toxic solvent. This produces more waste, offsetting the original intent of using the green solvent.
CPC uses the same solvents as traditional chromatography, but it uses them in smaller quantities. Furthermore, as previously mentioned, these solvents can be reused. Hence, the method is effective, more environmentally-friendly, andeconomically feasible.
CPC’s Value in CBD Production
As manufacturers seek to produce larger quantities of pure CBD to meet the demand of patients and physicians, they will need to integrate CPC into their purification workflows. Since CPC produces a relativelyduct on a larger scale, it is equipped to handle the high-volume needs of a large manufacturer. Additionally, because it extracts more CBD from a given volume of raw cannabis extract, and does not use costly silica or require multiple replacement columns, CPC also makes the process of industrial-scale CBD production economically sustainable. Since it also uses significantly less solvent than traditional chromatography, CPC makes it financially feasible to make the process of producing CBD more environmentally-friendly.
BioMauris, LLC became the 5th company in the United States to win a state contract for a seed-to-sale platform today. BioMauris is a technology company that manages product tracking, fulfillment and distribution with a focus on the healthcare market. According to a press release, the company announced today that the state of Iowa selected BioMauris to manage their tracking system for the medical cannabidiol (CBD) program.
That program’s contract includes inventory tracking, medical cannabidiol sales and patient and caregiver registration. In 2014, Iowa’s Medical Cannabidiol Act was signed into law. Three years later, in May of 2017, Governor Terry Branstad expanded the state’s program, including manufacture and dispensing in the previous legislation. On December 1st, 2018, Iowa expects sales to begin and fully implement the program.
This is BioMauris’ first state contract in the cannabis industry. According to the press release, BioMauris bases their platform on Salesforce for point of sale, tracking, customer loyalty and distribution services in the healthcare sector. The company says they use Salesforce because it is extremely customizable and secure.
According to Erik Emerson, founder and president of BioMauris, they’re poised to deliver on this front, given their experience in other industries. “Our team has extensive history in the pharmaceutical business, and therefore has a unique appreciation for data integrity and security,” says Emerson. “Additionally, we fundamentally believe the opportunity to track patient progress and associate the benefits received with the products used, is an incredible opportunity for the cannabis industry.” BioMauris has worked with clients on similar projects in the healthcare space for some time.
The company touts their platform as fully PCI-DSS and HIPAA compliant, allowing them to process payments and protect sensitive patient information. “Our patented technology, makes this not only possible, but simple for all users,” says Emerson. “We are excited to bring our product to the great state of Iowa and look forward to a long partnership with them. We believe strongly in what Iowa is attempting to do with their program and believe it is a perfect fit with our strategy for the cannabis industry.”
On November 1st, the U.S. Food and Drug Administration (FDA) published a press release addressing warning letters issued to four companies. The warning letters, sent to companies marketing cannabidiol (CBD) products with therapeutic claims, cites unsubstantiated claims about their products’ ability to treat or cure cancer and other diseases.
According to the press release, the four companies that received warning letters are Greenroads Health, Natural Alchemist, That’s Natural! Marketing and Consulting, and Stanley Brothers Social Enterprises LLC. The press release called their marketing campaigns “deceptive” for “unproven treatments.” Here is the letter they sent to Greenroads Health.
“As part of the U.S. Food and Drug Administration’s ongoing efforts to protect consumers from health fraud, the agency today issued warning letters to four companies illegally selling products online that claim to prevent, diagnose, treat, or cure cancer without evidence to support these outcomes,” reads the FDA statement. “Selling these unapproved products with unsubstantiated therapeutic claims is not only a violation of the Federal Food, Drug and Cosmetic Act, but also can put patients at risk as these products have not been proven to be safe or effective.”
“CBD makes cancer cells commit ‘suicide’ without killing other cells;”
“CBD … [has] anti-proliferative properties that inhibit cell division and growth in certain types of cancer, not allowing the tumor to grow;” and
“Non-psychoactive cannabinoids like CBD (cannabidiol) may be effective in treating tumors from cancer – including breast cancer.”
“Substances that contain components of marijuana will be treated like any other products that make unproven claims to shrink cancer tumors,” says FDA Commissioner Scott Gottlieb, M.D. “We don’t let companies market products that deliberately prey on sick people with baseless claims that their substance can shrink or cure cancer and we’re not going to look the other way on enforcing these principles when it comes to marijuana-containing products. There are a growing number of effective therapies for many cancers. When people are allowed to illegally market agents that deliver no established benefit they may steer patients away from products that have proven, anti-tumor effects that could extend lives.”
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.
As mentioned in Part 1, the physiological effects of cannabis are mediated by a group of structurally related organic compounds known as cannabinoids. The cannabinoids are biosynthetically produced by a growing cannabis plant and Figure 1 details the biosynthetic pathways leading to some of the most important cannabinoids in plant material.
The analytical measurement of cannabinoids is important to ensure the safety and quality of cannabis as well as its extracts and edible formulations. Total cannabinoid levels can vary significantly between different cultivars and batches, from about 5% up to 20% or more by dry weight. Information on cannabinoid profiles can be used to tailor cultivars for specific effects and allows end users to select an appropriate dose.
Routine Analysisvs. Cannabinomics
Several structurally analogous groups of cannabinoids exist. In total, structures have been assigned for more than 70 unique phytocannabinoids as of 2005 and the burgeoning field of cannabinomics seeks to comprehensively measure these compounds.¹
Considering practical potency analysis, the vast majority of cannabinoid content is accounted for by 10-12 compounds. These include Δ9-tetrahydrocannabinol (THC), cannabidiol (CBD), cannabigerol (CBG), Δ9-tetrahydrocannabivarian (THCV), cannabidivarin (CBDV) and their respective carboxylic acid forms. The cannabinoids occur primarily as carboxylic acids in plant material. Decarboxylation occurs when heat is applied through smoking, vaporization or cooking thereby producing neutral cannabinoids which are more physiologically active.
Potency Analysis by HPLC and GC
Currently, HPLC and GC are the two most commonly used techniques for potency analysis. In the case of GC, the heat used to vaporize the injected sample causes decarboxylation of the native cannabinoid acids. Derivatization of the acids may help reduce decarboxylation but overall this adds another layer of complexity to the analysis² ³. HPLC is the method of choice for direct analysis of cannabinoid profiles and this technique will be discussed further.
A sample preparation method consisting of grinding/homogenization and alcohol extraction is commonly used for cannabis flower and extracts. It has been shown to provide good recovery and precision² ³. An aliquot of the resulting extract can then be diluted with an HPLC compatible solvent such as 25% water / 75% acetonitrile with 0.1% formic acid. The cannabinoids are not particularly water soluble and can precipitate if the aqueous percentage is too high.
To avoid peak distortion and shifting retention times the diluent and initial mobile phase composition should be reasonably well matched. Another approach is to make a smaller injection (1-2 µL) of a more dissimilar solvent. The addition of formic acid or ammonium formate buffer acidifies the mobile phase and keeps the cannabinoid acids protonated.
The protonated acids are neutral and thus well retained on a C18 type column, even at higher (~50% or greater) concentrations of organic solvent² ³.
Detection is most often done using UV absorbance. Two main types of UV detectors are available for HPLC, single wavelength and diode array. A diode array detector (DAD) measures absorbance across a range of wavelengths producing a spectrum at each point in a chromatogram while single wavelength detectors only monitor absorbance at a single user selected wavelength. The DAD is more expensive, but very useful for detecting coelutions and interferences.
Chemical Constituents of Marijuana: The Complex Mixture of Natural Cannabinoids. Life Sciences, 78, (2005), pp. 539
Development and Validation of a Reliable and Robust Method for the Analysis of Cannabinoids and Terpenes in Cannabis. Journal of AOAC International, 98, (2015), pp. 1503
Innovative Development and Validation of an HPLC/DAD Method for the Qualitative and Quantitative Determination of Major Cannabinoids in Cannabis Plant Material. Journal of Chromatography B, 877, (2009), pp. 4115
Rebecca is an Applications Scientist at Restek Corporation and is eager to field any questions or comments on cannabis analysis, she can be reached by e-mail, firstname.lastname@example.org or by phone at 814-353-1300 (ext. 2154)
Hemp-derived cannabidiol (CBD) products are quickly becoming a burgeoning industry. Consumers can purchase the products in all fifty states and can receive the therapeutic effects of certain cannabinoids without any psychoactivity. Commonly used to help treat inflammation, pain, seizures and anxiety, CBD comprises a sizable portion of the cannabis market that patients and consumers are flocking to.
Founded by Paul Benhaim in 2013, Colorado-based Elixinol is reaching this market with a line of hemp-derived CBD oils and capsules. The company has grown rapidly and now has agreements with exclusive distributors in Japan, Puerto Rico, The United Kingdom and South Africa.
According to Chris Husong, sales and marketing director at Elixinol, achieving superior quality is central to the company’s growth strategy. “We are thinking about the long-term play here,” says Husong. Achieving the highest quality possible starts with sourcing from industrial hemp farms in Northern Europe, according to Husong. Through good manufacturing practices (GMPs), the company pays close attention to every detail involved in producing the hemp-derived CBD oil.
Safety and transparency are two core tenants in the company’s goal to strive for quality products. “We use third-party independent labs for our testing including one in Northern Europe where we source from in addition to Proverde Labs when it reaches us in Colorado,” says Husong. They test their products for over 300 chemicals (including pesticides, residual solvents and heavy metals) as well as for microbiological contamination and a unique terpene profile using GC-MS/GC-FID.
In addition to stringent manufacturing safety procedures and testing, tracking is a huge part of meeting quality standards. Each product batch also has a lot number. While batch numbers are a requirement in GMPs, lot numbers mean that they are well equipped in the event of a product recall. After the product is packaged, they perform additional spot-checks periodically.
Contract manufacturing and white-labeling products is a large part of their business, so the company needs to meet rigorous quality standards for their partners as well. “We provide our oil to a variety of associates, but we are always looking for new partners on the cutting edge, innovating with new products that we can help with,” says Husong. Very often, this means doing a full plant extraction for different uses. Utilizing a full-spectrum plant extraction helps maintain a well-balanced cannabinoid profile with many of the original terpenes found in the plant.
What makes their product so appealing to consumers is not just the quality, but also the method of delivery into the bloodstream and very precise dosing. “Our liposome products have a relatively new technology that allows the oil to be absorbed into your system via fatty acids, which lets you absorb the compounds much faster, requiring less of it and more consistency,” adds Husong. In addition to their fast-acting delivery mechanism, they produce capsules dosed to precisely fifteen milligrams and a delivery system they call ‘Xpen,’ which draws the oil in an oral applicator to a precise dose of fifteen milligrams every time.
After the manufacturing process, the company pays close attention to detail in their packaging and distribution. “The packaging is built to maintain that quality in the manufacturing process and to extend the shelf life of our products,” says Husong. The technology that goes into their packaging involves using Miron Violet glass, which is anti-fungal and prevents external light from deteriorating the oil inside.
This growing sector in the cannabis market is representative of a greater trend: the commodification of hemp and cannabis. When businesses like Elixinol scale up production of goods such as CBD oil, a lens focused on consistency and quality can not only improve business operations but also raise the standard across the entire industry.
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