I exhaustively extracted two different batches of kief.
The kief was produced using a roller in a freezer for 12 hours.
One batch contained 25.4% extractables and the other 30.2% extractables.
The leftover biomass was a fine powder like pollen that was not sticky and did not seem to contain anything useful.
The idea of using a kief roller as a pre concentration step to minimize the volume of biomass to be extracted is attractive but, in my experience, is not very efficient at recovering oleoresin.
Overall yield to oleoresin from as received biomass in these two experiments was 8.5 and 8.2 %.
This is from biomass that will yield ~12% oleoresin upon direct extraction.
Your results may vary…
3 Likes