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Last Updated on by Aardvark

As cannabis has become more widespread and legal, the therapeutic benefits of the plant are coming into clearer focus, and some of those benefits come thanks to terpenes — aromatic compounds found across the plant world affiliated with their plant’s particular smell. Some of the more common terpenes found in marijuana include pinene (pine), linalool (lavender), myrcene (mango), and humulene (hops). 

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ScienceDirect tells us, “Terpenes, also called isoprenoids, are largely found as constituents of essential oils. They are mostly hydrocarbons. The building block is a five carbon isoprene unit. Terpene hydrocarbons have a molecular formula of (C5H8)n; the n dictates the number of units involved. Terpene hydrocarbons are classified according to the number of isoprene units.” 

I know that’s a bit to digest, but hang in there. Still with me? 

Terpenes are then subdivided into monoterpenes, which have two isoprene units and 10 carbon atoms, then sesquiterpenes with three isoprene units and 15 carbon atoms. There are more subdivisions like diterpenes, triterpenes, and tetraterpenes, each adding more isoprene molecules along the way. Terpenes can also be acyclic or cyclic. All this to say, terpenes have a lot more going on than their signature scents. 

But will monoterpenes or sesquiterpenes act differently in our bodies than terpenes as we generally know them? Let’s take a look.

Though the total number of terpenes found in cannabis is subject to debate, we do know that there are more than 100, a good percentage of which are made up of monoterpenes. Some common monoterpenes found in the plant are alpha-pinene, beta-pinene, terpinolene, myrcene, limonene, and linalool.

Some terpenes have been used medicinally throughout history. More recent research suggests there’s a scientific basis for such use. Recent research supported by in vitro, animal, and clinical trials showed that terpenes may have a range of medicinal and therapeutic benefits, including antioxidant, antibiotic, neuroprotective, and more. Healthline has a good overview of common terpenes and their effects.

For example, pinene has shown potential as a bronchodilator. A study published in the journal Biomolecules notes, “A wide range of pharmacological activities have been reported, including antibiotic resistance modulation, anticoagulant, antitumor, antimicrobial, antimalarial, antioxidant, anti-inflammatory, anti-Leishmania, and analgesic effects.”

Pine tree

Pinene is a common terpene found in cannabis. photo credit

Occurring at a much smaller percentage are sesquiterpenes, which comprise only around 7% of terpenes (though, as with monoterpenes, sesquiterpene levels can vary greatly due to genetics and growing conditions). Their main function is to act as a plant pheromone to attract pollinators and repel pests. Some of the more common sesquiterpenes are probably ones that haven’t gotten on canna-consumer’s radars, including cedrene (cedarwood), zingiberene (ginger), bulnesene (patchouli), and caryophyllene (black pepper).

Much like monoterpenes these terpenes also have effects that are still coming into focus with increasing study. Studies on cedrene have shown potential for, “antiseptic, anti-inflammatory, antispasmodic, tonic, astringent, diuretic, sedative, insecticidal, and antifungal activities.” We’ve discussed some of the ways that caryophyllene interacts with anxiety on PotGuide as well.

There is still a lot we don’t know about how terpenes and cannabinoids like THC and CBD deliver their therapeutic benefits, and the entourage effect — a theory that posits that the cannabis plant works more effectively when compounds work together — is still being teased out.

Conclusion

To wrap it up, the differences between monoterpenoids and sesquiterpenoids boil down to different numbers of isoprene units and carbon atoms. As a consumer, leave the worrying about the differences to the chemists and kick back with a strain that has a terpene you enjoy and makes for good medicine.

Frequently Asked Questions

What do monoterpenes do?

Monoterpenes don’t do anything differently than a terpene in general. They are simply defined differently by isoprene units and carbon atom counts.

Is a monoterpene an essential oil?

Not exactly. Monoterpenes are compounds that are found in many essential oils, like lavender (linalool), lemon (limonene), and so on.

What do sesquiterpenes do in your body?

Like monoterpenes, sesquiterpenes may interact with your body in the way you might expect a terpene to do.

What essential oils have sesquiterpenes?

Some of the oils that contain sesquiterpenes are cedarwood, patchouli, and ylang ylang.

How do you pronounce sesquiterpenes?

Ses-quit-er-penes, with the emphasis on “quit”


What’s your favorite terpene? Share in the comments!

Photo Credit: Michael Longmire (license)

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By Aardvark

How's it going fellow growers and smokers! I'm the Aardvark and have been growing and doing grow shows online for many years now. I have helped various companies launch as well as helped test grow for specific breeders trying to prove out certain strains and traits.