CBDa extraction with ethanol and water

Hash and Stuff Extraction
, ,
21

Dried CBD biomass is usually partially decarbed, like 20-30%.

22

I generally disagree with that statement, as I have personally processed at a minimum tens (if not hundreds) of thousands of pounds of hemp and never seen it that decarbed. Maybe if companies are flash-drying using high heat, there is the possibility, but I have had biomass dried in such a manner and still not seen levels that high. In my experience (on the west coast where we apparently get better biomass) decarb % even after a year of sitting in an uninsulated warehouse was less than 10% on some hemp I had.

Not to derail too much, but where exactly are you seeing this biomass and in what quantities? Am I living in an anomalous bubble of higher standards and practices?

3 Likes
23

In fact I said it wrong, my bad.
I was dealing with unwinterized and undecarbed crude extract.

I have data over several years, in Switzerland, from products cold extracted from various origin, and never heated above 60c. It is always in this range.

I guess the dried biomass might be more acidic indeed, but that the acid cannabinoid are less extracted and remain in spent biomass (ie decarb level should drop following extraction). I only measure total cannabinoids, I rarely look into this information so far.

1 Like
24

Thank you for the clarification. I’m also happy to assist with getting your decarb numbers lower in the crude you work with, providing you have any say in the initial extraction process. 20-30% is still pretty high for non-decarbed crude.

1 Like
25
  1. Try thinking about the three hydrogen ions that can
    be disassociated from the CBDA molecule and their
    (Pka)s. the pKa values are solvent dependent especially when you consider aprotic solvent vs protic solvent.
  2. When thinking about working with water-alcohol
    mixtures containing cannabinoids, start thinking about
    the non micelle, non colloidal “louche forms”.
  3. When you see “white” do not expect CBDA crystals!
  4. Try to find any literature on the production of CBDA crystals.
  5. Study the concentration dependence of louche formation.
  6. what do cannabinoid ternary mixtures, with water and alcohol look like? (Or saline).
  7. why are all receptor binding studies done with detergents?

It has recently been discovered that “ louches “ are neither colloids or micelles.

2 Likes