What are Cannabinoids?
Firtsly, Cannabinoids are naturally occurring compounds found in the Cannabis sativa plant. Of over 480 different compounds present in the plant, only around 66 are termed cannabinoids.
Secondly, The most well know among these compounds is the delta-9-tetrahydrocannabinol (Δ9-THC), which is the main psychoactive ingredient in cannabis.
Cannabidiol (CBD) is another important component, which makes up about 40% of the plant resin extract.
Classes of cannabinoids
They are separate into the following subclasses:
- Cannabigerols (CBG)
- Cannabichromenes (CBC)
- Cannabidiol (CBD)
- Tetrahydrocannabinol (THC)
- Cannabinol (CBN)
- Cannabinodiol (CBDL)
- Other cannabinoids including cannabicyclol (CBL), cannabielsoin
- (CBE) and cannabitriol (CBT)
‘The Hemp and CBD Expo’ returns to Birmingham on September 14-15th, 2019
Which type of chromatography is best for cannabis analysis?
Cannabis, Alcohol and the Epigenome
Cannabinoids exert their effects by interacting with specific cannabinoid receptors present on the surface of cells.
These receptors are find in different parts of the central nervous system and the two main types of cannabinoid receptors in the body are CB1 and CB2.
In 1992, a naturally occurring substance in the brain that binds to CB1 was discovere’d, call anandamide. This cannabinoid-like chemical and others that were later discovered are refer to as endocannabinoids.
The effects depends on the brain area involved. Effects on the limbic system may alter the memory, cognition and psychomotor performance; effects on the mesolimbic pathway may affect the reward and pleasure responses and pain perception may also be altered.
Differences between cannabinoids
The main way in which the cannabinoids are differentiated is based on their degree of psychoactivity.
For example, CBG, CBC and CBD are not know to be psycholgically active agents whereas THC, CBN and CBDL along with some other cannabinoids are know to have varying degrees of psychoactivity.
The most abundant of the cannabinoids is CBD, which is thought to have anti-anxiety effects, possibly counteracting the psychoactive effects of THC.
When THC is expose to the air, it becomes oxidize and forms CBN which also interacts with THC to lessen its impact.
This is why cannabis that has been left out unused will has less potent effects when smokedd, due to the increase CBN to THC ratio.
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