Quote Originally Posted by ytrewq
There seems to be a lot of mystery surrounding the decarboxylation, which is the crucial step, so I've been researching. I found this patent application for thca > thc conversion and extraction: Extraction of pharmaceutically active components from plant materials - Patent 7344736

The applicant tested samples at different temperatures for different amounts of time then perfomed chemical analysis. There are 2 main factors they consider: the conversion of thca to thc, which is what you want, and breakdown of thc to cbn which you don't want.

They got good results with 221 F for 4 hours, 248 F for 1 hour, or 284 F for a half hour. Those all gave 99% conversion of thca to thc. 248 F for 1 hour had somewhat less breakdown of thc to cbn than the other two temps so it seems like the best.

If you extrapolate from the data 200 F for 20min is inadequate; you'd maybe convert half of what's available.
is this true?
should i heat the weed at 248 for an hour instead of the 325 at 5 mins?

would the decarb process work just as well if i was using a quad instead of an eighter?

http://boards.cannabis.com/recipes/1...en-dragon.html

In this link, dragonrider talks about isomerizing a single dose of DG, my question is would you be able to isomerize the entire GD tincture before making it into a liquer, instead of doing it per serving?