Journal
MOLECULES
Volume 26, Issue 18, Pages -Publisher
MDPI
DOI: 10.3390/molecules26185496
Keywords
cannabis; cannabinoid; terpene; terpenoid; essential oil; botanical medicine; pharmaceutical; extraction; hemp; hashish
Funding
- CReDO Science
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This study focused on using organically grown cannabis to isolate pure trichomes via exposure to vapor from solid CO2, successfully concentrating cannabinoid content and preserving monoterpenoids. The resulting dried sifted flower by-product after dry ice processing remains a usable commodity.
Despite its use by humans for thousands of years, the technology of cannabis usage and extraction is still evolving. Given that the primary pharmacological compounds of interest are cannabinoid and terpenoids found in greatest abundance in capitate glandular trichomes of unfertilized female inflorescences, it is surprising that older techniques of hashish making have received less technological advancement. The purpose of this study was to employ organically grown cannabis and to isolate pure trichomes from freshly picked flowers via exposure to vapor from solid CO2, commonly known as dry ice, followed by their isolation via sifting through a 150 mu screens while maintaining the cold chain. Biochemical analysis was undertaken on fresh flower, frozen-sifted flower by-products, treated trichomes (Kryo-Kief (TM)), dried flower, dried sifted flower by-product and dried kief. The dry ice process successfully concentrated cannabinoid content as high as 60.7%, with corresponding concentration and preservation of monoterpenoids encountered in fresh flower that are usually lost during the conventional cannabis drying and curing process. The resulting dried sifted flower by-product after dry ice processing remains a usable commodity. This approach may be of interest to pharmaceutical companies and supplement producers pursuing cannabis-based medicine development with an eye toward full synergy of ingredients harnessing the entourage effect.
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