CBD Decarboxylation or: Why We "Bake" Cannabis
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Time to read 4 min
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Time to read 4 min
The word sounds spooky at first: decarboxylation. For some, it brings back really bad memories of chemistry class in school.
But don't worry. Decarboxylation in the context of CBD production is not an opaque chemical process with thousands of potentially harmful auxiliary substances. Nor do you have to fire up the Bunsen burner yourself to obtain the active form from the CBD precursors (CBDa) in the hemp plant. We'll take care of that for you.
But because there are still some myths surrounding CBD decarboxylation, here is our ultimate info article on the subject. (Almost) without technical jargon and short and sweet. Ready?
Table of Contents
To obtain CBD, the precursor of CBD, CBDa (cannabidiolic acid), must be decarboxylated by heating. Only then are the known positive effects of CBD possible.
Although decarboxylation is a chemical process, it requires no additional substances (e.g. chemicals). This makes the whole process particularly gentle and the end product very natural.
Do-it-yourself decarboxylation (e.g. of cannabis flowers) is difficult to control, and the end product can therefore have undesirable side effects (e.g. psychoactivity).
The bad news right at the beginning: Chewing on a hemp plant will have no demonstrable effect on your body. (Except perhaps a few hemp fibers between your teeth.) A fresh cannabis plant contains almost no finished cannabinoids, neither THC nor CBD.
Instead, precursors (cannabinoid acids) are contained, e.g. CBGa, THCa and CBDa. CBDa (cannabidiolic acid) is the "acid" precursor of CBD; the small "a" stands for "acid". CBDa is sometimes referred to as the "inactive" form of CBD, which first needs to be activated through a specific process.
For us to obtain CBD from CBDa, decarboxylation is required. In this process, a carboxyl group (COOH) is split off from the CBDa molecule by heat. What remains? The so-called "active" CBD with its many positive properties and effects. The term "decarboxylation" turns the acid into a non-acid, so the name ultimately describes nothing other than the "de-acidification" of CBDa.
By the way, this doesn't just work with CBD. Other cannabinoids such as THC (tetrahydrocannabinolic acid) are also only formed from their acidic precursors through decarboxylation. THCa becomes THC, CBGa becomes CBG, and so on.
The short answer: No decarboxylation means no CBD and therefore no positive properties and effects.
This is why CBD decarboxylation is so important:
Although CBDa also has some interesting properties, most studies and testimonials you find about CBD refer to decarboxylated CBD. The calming effect, the support for sleep problems, the anti-inflammatory properties - all this is mainly based on activated CBD. These effects arise through interaction with the cannabinoid receptors in the body.
In fact, it can happen that poor quality CBD oil has no effect or only a very weak effect. This could be because the CBDa was not properly decarboxylated, meaning there isn't as much CBD contained as expected. You would then have a product with a high CBDa content, but practically no desired CBD effect.
If you come across testimonials online saying that CBD oil doesn't work, it's actually quite often due to this. Therefore: When buying, pay attention to the quality of your product and the manufacturer's information about decarboxylation!
Steps in the decarboxylation process:
Now it gets a little technical, but don't panic - we'll keep it short. The activation of CBD generally takes place at temperatures between 100 and 150 degrees Celsius. Temperature and time are closely linked: the higher the temperature, the faster the process.
At about 110 degrees, complete decarboxylation takes approximately 60 minutes. At 130 degrees, it's done in 30 minutes, and at 150 degrees, the process is completed in about 10-15 minutes. However, caution is advised here: excessively high temperatures can destroy the CBD or convert it into other, less desirable compounds. Patience and careful monitoring of the process are particularly important here. The goal is to maintain a uniform, not too high temperature over a longer period.
Professional manufacturers generally use special ovens or decarboxylation devices for this. (Yes, we bake or cook our flowers!) Not only is the temperature precisely monitored, but also the humidity and the duration of the process. This ensures a uniform and complete conversion of CBDa to CBD.
Important to know: The process works completely without additional chemicals. It is a purely thermal reaction. The CBDa molecule simply releases its carboxyl group when sufficiently heated. Carbon dioxide and water are harmless by-products - as with CBD oil CO₂ extraction.
Theoretically, you could decarboxylate CBDa-rich cannabis flowers at home. An oven or stove for the temperature, some time - sounds doable, right? But as always: In practice, it's much more complicated.
The biggest problem is controlling the process. Your home oven is nowhere near as precise as professional equipment. Even small temperature fluctuations can lead to incomplete decarboxylation or too much CBD being destroyed. The result would be a product with unpredictable effects.
It gets even more problematic regarding THC. Incomplete decarboxylation can mean that psychoactive THC is still present, even if you only wanted CBD. Psychoactive effects and an unwanted high are free of charge. If heated too strongly, other compounds can also form, which may have completely different, possibly undesirable side effects.
In addition, improper decarboxylation will cause you to lose valuable terpenes and other cannabinoids. These substances are sensitive to heat and evaporate or decompose at certain temperatures. The result: Less of the popular entourage effect, meaning a product that is significantly less effective than professionally manufactured CBD.
Advantage / Aspect |
Meaning |
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Precise measuring devices |
Manufacturers use precise devices for exact control of temperature and time. |
Use of vacuum ovens |
Continuous operation at lower temperatures, gentler on the active ingredients. |