A member in our Facebook group brought up the topic of decarboxylation! Great word to say if you ask me! Now I’m a huge supporter of chemistry and human physiology so this was a very enjoyable article to put together. Enjoy!
Here’s a scenario we have all seen in film before: Somebody consumes an entire bag of raw cannabis in order to avoid getting caught with it. Eyes pop wide open and gasps ensue. “You just ate that whole bag!” somebody shouts. However, the aftermath of this scene usually involves a very different representation of what actually happens when you consume raw cannabis. Spoiler alert: The effects will be lackluster at best. Why is this the case?
The answer to this mystery lies in a process called decarboxylation, one that is necessary for us to enjoy the psychoactive effects of the cannabinoids we consume.
All cannabinoids contained within the trichomes of raw cannabis flowers have an extra carboxyl ring or group (COOH) attached to their chain. For example, tetrahydrocannabinolic acid (THCA) is synthesized in prevalence within the trichome heads of freshly harvested cannabis flowers. In most regulated markets, cannabis distributed in dispensaries contains labels detailing the product’s cannabinoid contents. THCA, in many cases, prevails as the highest cannabinoid present in items that have not been decarboxylated (e.g., cannabis flowers and concentrates).
THCA has a number of known benefits when consumed, including having anti-inflammatory and neuroprotective qualities. But THCA is not psychoactive, and must be converted into THC through decarboxylation before any effects can be felt.
What Causes Decarboxylation?
The two main catalysts for decarboxylation to occur are heat and time. Drying and curing cannabis over time will cause a partial decarboxylation to occur. This is why some cannabis flowers also test for a presence of small amounts of THC along with THCA. Smoking and vaporizing will instantaneously decarboxylate cannabinoids due to the extremely high temperatures present, making them instantly available for absorption through inhalation.
While decarboxylated cannabinoids in vapor form can be easily absorbed in our lungs, edibles require these cannabinoids present in what we consume in order for our bodies to absorb them throughout digestion. Heating cannabinoids at a lower temperature over time allows us to decarboxylate the cannabinoids while preserving the integrity of the material we use so that we may infuse it into what we consume.
At What Temperature Does Decarboxylation Occur?
The THCA in cannabis begins to decarboxylate at approximately 220 degrees Fahrenheit after around 30-45 minutes of exposure. Full decarboxylation may require more time to occur. Many people choose to decarboxylate their cannabis at slightly lower temperatures for a much longer period of time in attempts to preserve terpenes. Many mono and sesquiterpenes are volatile and will evaporate at higher temperatures, leaving potentially undesirable flavors and aromas behind. The integrity of both cannabinoids and terpenoids are compromised by using temperatures that exceed 300 degrees F, which is why temperatures in the 200’s are recommended.
Heat and time can also cause other forms of cannabinoid degradation to occur. For example, CBN (cannabinol) is formed through the degradation and oxidization of THC, a process that can occur alongside decarboxylation. CBN accounts for a much more sedative and less directly psychoactive experience.
How to Decarboxylate Cannabis at Home
In order to decarboxylate cannabis at home, all you need is some starting material, an oven set to 220-235 degrees F (depending on your location and oven model), some parchment paper, and a baking tray. Finely grind your cannabis until the material can be spread thin over parchment and placed on your baking sheet. Allow the cannabis to bake for 30-45 minutes, or longer if desired.
Cannabis can also be decarboxylated in a slow cooker by introducing solvents such as cooking oils or lecithin.These methods create infusions that can be used in a variety of cooking recipes, topicals, and even cannabis capsules. Since they contain decarboxylated cannabinoids, they will be effective any way you choose to consume them.
Now that you know how decarboxylation works, the next time you see somebody on television falling over onto the ground after eating an entire bag of shake, you’ll be able to laugh it off over a batch of your very own freshly baked and infused, fully decarboxylated cannabis cookies. Bon appetit!
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