Study Reveals Why Cannabis Varieties Have Distinct Scents
Scientists identified over 50 compounds responsible for the distinct aromas of cannabis, revealing how terpenes and other molecules interact to create unique profiles.
Published on 09/23/2025
Research Shows Interaction Between Terpenes and Molecules That Shape the Odor of Cannabis | AI Reproduction
Scientists conducted the first study guided by olfactory perception to identify the active odor compounds in dried cannabis flowers, using common methods in food science, such as gas chromatography with olfactometry and dilution analysis of aromatic extracts.
They identified 52 odor compounds, including terpenes, esters, sulfur molecules, phenolic compounds, volatile acids, and furanones, with 38 of these never having been reported before for dried cannabis flowers, and six not having been detected in cannabis material until now.
Interactions That Shape Aroma and Practical Implications
Although many volatile compounds are present, the study showed that only a small fraction actually contributes to the perceived aroma. Each compound was assigned a “flavor dilution factor,” reflecting its olfactory potency.
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The Aromas of Cannabis and the Sense of Smell Beyond the Nose
Practical examples: sweat odors were linked to acids such as butanoic, hexanoic, and 2-methylbutanoic; popcorn smell with 2-acetylpyrazine; earthy or bell pepper aroma with 3-isobutyl-2-methoxypyrazine; sweet or oat notes with nonabrenal or α-terpineol.
Additionally, the work expands understanding of how drying and curing processes can generate or release certain odorants, paving the way for genetic improvement of varieties to aim not only for THC or CBD content but also for desired aromatic profiles.
With information from Marijuana Moment.
