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Kief (from Arabic كيف kīf, "Joy, pleasure" [1] [2]), sometimes transliterated as keef, also known as "Dust" and "Chief" a.k.a cannabis crystals among other names, refers to the pure and clean collection of loose cannabis trichomes, which are accumulated by being sifted from cannabis flowers or buds with a mesh screen or sieve.
It is the principal psychoactive constituent of cannabis and one of at least 113 total cannabinoids identified on the plant. Although the chemical formula for THC (C 21 H 30 O 2) describes multiple isomers, [10] the term THC usually refers to the delta-9-THC isomer with chemical name (−)-trans-Δ 9-tetrahydrocannabinol. It is a colorless oil.
The bracts surrounding a cluster of Cannabis sativa flowers are coated with cannabinoid-laden trichomes. Cannabis indica plant. The classical cannabinoids are concentrated in a viscous resin produced in structures known as glandular trichomes. At least 113 different cannabinoids have been isolated from the Cannabis plant. [6]
[9] [10] Inside the transcriptomes of glandular trichomes in the cannabis plant, the pathway for cannabinoid production takes place. [9] Beginning with the formation of 3,5,7-trioxododecaneoyl-COA by the condensation reaction between hexanoyl-CoA and malonyl-CoA , catalyzed by type III polyketide synthase (PKS), the product is then used to form ...
Medical cannabis (or medical marijuana) refers to the use of cannabis and its constituent cannabinoids, in an effort to treat disease or improve symptoms. Cannabis is used to reduce nausea and vomiting during chemotherapy , to improve appetite in people with HIV/AIDS , and to treat chronic pain and muscle spasms .
Causes of head and neck cancers. In the United States, head and neck cancers make up 4% of all cancers, with more than 71,000 new cases and more than 16,000 deaths expected in 2024, according to ...
Cannabis and cancer risk. The cannabis plant contains more than 100 cannabinoids, including THC and CBD, and hundreds of non-cannabinoid chemicals. Scientists are just beginning to understand the ...
Hashish is a cannabis concentrate product composed of compressed or purified preparations of stalked resin glands, called trichomes, from the plant. It is defined by the 1961 UN Single Convention on Narcotic Drugs (Schedule I and IV) as "the separated resin, whether crude or purified, obtained from the cannabis plant".