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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]
Cannabinoids (/ k ə ˈ n æ b ə n ɔɪ d z ˌ ˈ k æ n ə b ə n ɔɪ d z /) are compounds found in the cannabis plant or synthetic compounds that can interact with the endocannabinoid system. [1] [2] The most notable cannabinoid is the phytocannabinoid tetrahydrocannabinol (THC) (Delta-9-THC), the primary intoxicating compound in cannabis.
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.
[1] [2] THC and CBD are stored mostly in the trichomes of the plant, [3] and can cause psychological and physical impairment in the user, via the endocannabinoid system and unique receptors. [ 4 ] [ 5 ] THC increases dopamine levels in the brain, which attributes to the euphoric and relaxed feelings cannabis provides.
Cannabinoid receptor type 1 (CB 1) receptors are thought to be one of the most widely expressed G αi protein-coupled receptors in the brain. One mechanism through which they function is endocannabinoid-mediated depolarization-induced suppression of inhibition , a very common form of retrograde signaling , in which the depolarization of a ...
The main metabolite in urine is the ester of glucuronic acid and 11-OH-THC and free THC-COOH. In the feces, mainly 11-OH-THC was detected. [37] Estimates of the elimination half-life of THC are variable. [23] THC was reported to have a fast initial half-life of 6 minutes and a long terminal half-life of 22 hours in a population pharmacokinetic ...
Gaoni and Mechoulam [25] also described a method for converting CBD to Δ9-THC comprising refluxing a mixture of CBD in ethanol containing 0.05% hydrogen chloride for 2 hours. Percentage yield of Δ9-THC (Δ1-THC) was 2%. [26] [27] Using boron trifluoride, the yield was 70% [28] although purity was not given. [29]