FR0ST
Well-Known Member
The Goal
To decarboxylate 1:1 CBD/THC cannabis to produce maximum THC & CBD potency, whilst minimizing the production of CBN.
Background
I've been doing some pretty extensive research on the best possible process to turn 1:1 CBD/THC cannabis into an active tincture.
I found that solid information regarding the decarboxylation times of CBD very difficult to attain. With most people only interested in maximizing THC levels.
Therefore I want to share this information with anyone else who might find it useful!
The Process
Ideally this process should be done with a precise heating element, but I believe that good results can still be achieved with a conventional oven. Place your bud / trim into an oven safe dish, then cover securely with aluminum foil so that no gas can escape.
STEP ONE:
If you are using fresh trim or bud, you must first evaporate off retained water. This can be done either through the normal process of drying and curing, or as stated in the reference paper (highlighted below in blue):
“Preferably, decarboxylation is carried out in a multi-step heating process in which the plant material is:
· i) heated to a first temperature for a first (relatively short) time period to evaporate off retained water and allow for uniform heating of the plant material; and
· ii) the temperature is increased to a second temperature for a second time period (typically longer than the first time period) until at least 95% conversion of the acid cannabinoids to their neutral form has occurred.
Preferably the first step is conducted at a temperature in the range of 100° C. to 110° C. for 10–20 minutes. More preferably the first temperature is about 105° C. and the first time period is about 15 minutes.”
STEP TWO:
Now that you have removed retained water from your bud / trim, you can proceed to decarboxylate your cannabis, following the steps highlighted in the paper:
“Therefore laboratory studies demonstrate the optimum conditions for the decarboxylation of:
o Chemovar producing primarily CBD is 1 hour at 120° C. or 0.5 hour at 140° C.
o Chemovar producing primarily THC to minimise CBN formation, is 1 to 2 hours at 105° C. or 1 hour at 120° C. (This will result in only 4.1% CBN 1 hour at 120, whilst maximizing THC).
Thin layer chromatography reveals that virtually all of the THCA has disappeared after 4 hours at 105° C. and after 1 hour at 120° C. No THCA is visible at any time point when the herb is heated at 140° C. A small amount of residual staining at this retention value on TLC and the presence at low levels of a peak coincident with THCA on HPLC analysis may indicate the presence of a minor cannabinoid rather than residual THCA.”
STEP THREE:
When the hour is up, take your tray out of the oven, and leave on the side to cool with the foil remaining sealed.
Summary
You should now have fully decarboxylated cannabis with maximum THC & CBD potency, and minimal production of CBN. This is now ready to be used for any cold extraction techniques such as QWISO or Everclear methods.
References
Extraction of pharmaceutically active components from plant materials
United States Patent 7344736
http://www.freepatentsonline.com/7344736.html
Disclaimer
I have not tested this method myself. But beleive it to be theoretically sound, based on the reference material.
To decarboxylate 1:1 CBD/THC cannabis to produce maximum THC & CBD potency, whilst minimizing the production of CBN.
Background
I've been doing some pretty extensive research on the best possible process to turn 1:1 CBD/THC cannabis into an active tincture.
I found that solid information regarding the decarboxylation times of CBD very difficult to attain. With most people only interested in maximizing THC levels.
Therefore I want to share this information with anyone else who might find it useful!
The Process
Ideally this process should be done with a precise heating element, but I believe that good results can still be achieved with a conventional oven. Place your bud / trim into an oven safe dish, then cover securely with aluminum foil so that no gas can escape.
STEP ONE:
If you are using fresh trim or bud, you must first evaporate off retained water. This can be done either through the normal process of drying and curing, or as stated in the reference paper (highlighted below in blue):
“Preferably, decarboxylation is carried out in a multi-step heating process in which the plant material is:
· i) heated to a first temperature for a first (relatively short) time period to evaporate off retained water and allow for uniform heating of the plant material; and
· ii) the temperature is increased to a second temperature for a second time period (typically longer than the first time period) until at least 95% conversion of the acid cannabinoids to their neutral form has occurred.
Preferably the first step is conducted at a temperature in the range of 100° C. to 110° C. for 10–20 minutes. More preferably the first temperature is about 105° C. and the first time period is about 15 minutes.”
STEP TWO:
Now that you have removed retained water from your bud / trim, you can proceed to decarboxylate your cannabis, following the steps highlighted in the paper:
“Therefore laboratory studies demonstrate the optimum conditions for the decarboxylation of:
o Chemovar producing primarily CBD is 1 hour at 120° C. or 0.5 hour at 140° C.
o Chemovar producing primarily THC to minimise CBN formation, is 1 to 2 hours at 105° C. or 1 hour at 120° C. (This will result in only 4.1% CBN 1 hour at 120, whilst maximizing THC).
Thin layer chromatography reveals that virtually all of the THCA has disappeared after 4 hours at 105° C. and after 1 hour at 120° C. No THCA is visible at any time point when the herb is heated at 140° C. A small amount of residual staining at this retention value on TLC and the presence at low levels of a peak coincident with THCA on HPLC analysis may indicate the presence of a minor cannabinoid rather than residual THCA.”
STEP THREE:
When the hour is up, take your tray out of the oven, and leave on the side to cool with the foil remaining sealed.
Summary
You should now have fully decarboxylated cannabis with maximum THC & CBD potency, and minimal production of CBN. This is now ready to be used for any cold extraction techniques such as QWISO or Everclear methods.
References
Extraction of pharmaceutically active components from plant materials
United States Patent 7344736
http://www.freepatentsonline.com/7344736.html
Disclaimer
I have not tested this method myself. But beleive it to be theoretically sound, based on the reference material.