Camphene is a monoterpene in cannabis that is rarely analyzed. As a terpene, it belongs to the group of aromatically active plant substances that contribute to the scent, taste, and character of a cannabis strain. In laboratory analyses, camphene usually appears in low concentrations, but is clearly identified in detailed terpene profiles. Unlike cannabinoids such as THC or CBD, camphene is not a pharmacologically active main ingredient of cannabis. It is a naturally occurring terpene with a defined chemical structure and its own sensory signature.
The most important facts in brief
- Camphene is a monoterpene.
- It is found in many plant species, including cannabis.
- It is usually only found in small quantities in cannabis strains.
- Terpene is not a cannabinoid and is not psychoactive.
- Its significance arises primarily from its aroma and terpene profile.
- Preclinical studies describe antioxidant and lipid-lowering effects.
What is camphene? Chemical properties
Camphene is a bicyclic hydrocarbon from the monoterpene group. With the molecular formula C₁₀H₁₆, it is one of the classic terpene compounds of plant origin.1 Structurally, camphene is related to α-pinene, β-pinene, and camphor. This similarity explains their comparable physicochemical properties and aromatic similarities. The terpene is lipophilic, hardly soluble in water, and relatively volatile. At room temperature, it is a solid to crystalline substance.
The boiling point is approximately 158–159 °C.2 Temperatures between 165 and 170 °C are specified for vaporization in vaporizer devices. Heat, light, and oxygen can alter the terpene profile.
Occurrence in cannabis and other plants
The cannabis plant synthesizes camphene as part of its terpene metabolism. In addition, the terpene is a component of numerous essential oils and is found in, among other things:
- pine tree
- fir tree
- rosemary
- ginger
- camphor tree
- nutmeg
In these plants, camphene produces fresh, resinous, and slightly camphor-like scents. In cannabis, it also contributes to the sensory characteristics of individual strains.
How is camphene produced in the cannabis plant? Biosynthesis
It is formed via the terpene biosynthesis pathway starting from geranyl pyrophosphate (GPP).3 The specific terpene composition of a strain is primarily genetically determined and is also influenced by environmental factors. Relevant influencing factors include:
- light intensity
- nutrient supply
- water supply
- harvest time
- drying
- storage
Not every cannabis strain contains camphene in measurable concentrations. Its detection depends on genetics and the method of analysis.
Camphene in the terpene profile of cannabis strains
Im Vergleich zu dominanten Terpenen wie z. B. Myrcen, Limonen oder Caryophyllen erscheint Camphen meist als Neben-Terpen. Es ergänzt das bestehende Terpenprofil, ohne die Gesamtwirkung einer Sorte maßgeblich zu bestimmen. In der analytischen Betrachtung erweitert es die Aussagekraft eines vollständigen Terpenprofils.4 Gerade bei medizinischen Cannabisprodukten liefern detaillierte Terpenangaben zusätzliche Informationen zur Zusammensetzung. Weitere Informationen über die wichtigsten Cannabis Terpene und ihre Eigenschaften im Überblick gibt es hier.
What is the sensory effect of camphene? Aroma and taste
The terpene camphene has a characteristic scent profile. Typical characteristics are:
- Dry, fresh notes
- Pine needle and forest associations
- Resinous components
- Light, camphor-like sharpness
Some describe cool, almost menthol-like nuances. These impressions are created by the molecular structure of the terpene. In cannabis, it never acts in isolation. It interacts with other terpenes such as pinene, borneol, or eucalyptol. This can make a terpene profile appear more structured and clearer. In terms of taste, camphene enhances fresh and herbal notes without dominating sweetness or bitterness.
Does camphene influence the effects of cannabis? Entourage effect
The interaction between cannabinoids and terpenes is discussed in connection with the entourage effect.5 Camphene does not bind to cannabinoid receptors and does not directly influence the psychoactive effects of THC. Its influence is limited to sensory properties. Pharmacological modulation of the effects of cannabis by camphene has not yet been proven.
What effects are attributed to camphene? Overview of studies
Camphor has been scientifically studied for several decades.6 The most reliable data comes from preclinical research, in which it was studied as an isolated monoterpene.
Lipid-lowering effects
A study by Vallianou et al. (2011, PLOS ONE) showed a significant reduction in total cholesterol, LDL cholesterol, and triglycerides in hyperlipidemic rats after camphene administration.7 Intervention in lipid metabolism beyond classic HMG-CoA reductase inhibition is being discussed.
Antioxidant properties
In a study by Tiwari and Kakkar (2009, Toxicology in Vitro), camphene reduced oxidative stress in macrophage cells and stabilized antioxidant enzyme systems.8
Antimicrobial potential
Some studies on essential oils containing camphene describe antimicrobial effects. In most cases, complex extracts were examined, not isolated camphene.
These findings are based on cell and animal models. There are currently no clinical studies on the effects of camphene in cannabis products.
Conclusion
Camphene is a rare terpene in cannabis with clearly defined chemical properties. It is not psychoactive and has no clinically proven therapeutic function in cannabis therapy. Its significance lies in the aromatic refinement of the terpene profile. In the differentiated consideration of cannabis strains, camphene provides additional information on the composition and sensory characteristics.
FAQ
A monoterpene that occurs in small amounts in the terpene profile of various cannabis strains.
No. Terpene does not directly affect THC or CBD.
The terpene enhances fresh, resinous, and slightly camphor-like notes and, when combined with borneol, can produce a clear, coniferous profile.
Preclinical studies describe antioxidant and lipid-lowering effects. There is no clinical evidence in connection with cannabis or CBD products.
It is found sporadically in strains with fresh, pine-like terpene profiles. Not every strain contains the terpene in measurable concentrations.
- PubChem. Camphene (CID 6616). National Center for Biotechnology Information. ↩︎
- Linstrom, P.J.; Mallard, W.G. (eds.). NIST Chemistry WebBook, NIST Standard Reference Database Number 69. ↩︎
- Booth, J.K., & Bohlmann, J. (2019). Terpenes in Cannabis sativa – From plant genome to humans. Plant Science, 284, 67–72. ↩︎
- ElSohly, M.A. et al. (2017). Methods for the analysis of cannabinoids and terpenes in Cannabis. Journal of AOAC International, 100(3), 664–673. ↩︎
- Russo, E.B. (2011). Taming THC: potential cannabis synergy and phytocannabinoid-terpenoid entourage effects. British Journal of Pharmacology, 163(7), 1344–1364. ↩︎
- Boyd, E.M., & Sheppard, P. (1970). Nutmeg oil and camphene as inhaled expectorants. Archives of Otolaryngology, 92(4), 372–378. ↩︎
- Vallianou, N. et al. (2011). Camphene, a plant-derived monoterpene, reduces plasma cholesterol and triglycerides in hyperlipidemic rats. PLOS ONE, 6(10), e20516. ↩︎
- Tiwari, M., & Kakkar, P. (2009). Plant-derived antioxidants: Geraniol and camphene protect rat alveolar macrophages against oxidative stress. Toxicology in Vitro, 23(4), 689–696. ↩︎