Researchers have developed a new glossary to describe cannabis aromas, debunking certain theories about what gives marijuana strains their unique smell profiles and creating a lexicon to better classify varieties for consumers and businesses. Notably, they found that\u2014 contrary to popular belief\u2014terpene content is a poor predictor of cannabis\u2019s scent profile.<\/p>\n
For the study, published in the journal PLOS One this month, researchers at Oregon State University recruited a 21-judge panel to assess 91 samples of unburnt marijuana flower. The panel was tasked with smelling the varieties and checking off aroma descriptors that they felt applied.<\/p>\n
\u201cThe primary goal of this study was to develop and systematically evaluate a reproducible aroma lexicon for Cannabis<\/em>\u00a0inflorescence, which is a foundational step toward a standardized, evidence-based framework for describing\u00a0Cannabis<\/em> aroma,\u201d the study says.<\/p>\n \u201cWhile this study does not generate or validate a lexicon in a definitive sense, it represents an important phase in the continued evolution of a comprehensive descriptive system for Cannabis,<\/em>\u201d it says. \u201cIt organizes and refines existing sensory terminology into a coherent, data-driven structure suitable for both research and applied contexts.\u201d<\/p>\n \u201cIn this way, the lexicon contributes to an ongoing process of refinement and expansion, and its demonstrated ability to consistently differentiate samples underscores its value as a tool for both scientific inquiry and industry communication,\u201d the authors said.<\/p>\n \u201cThis study generated and evaluated a descriptive aroma lexicon for intact Cannabis inflorescence consisting of 25 terms with defined reference standards.\u201d<\/p>\n<\/blockquote>\n Of the total 8,075 descriptors that were selected across the study, three stood out as the most common, accounting for 26 percent of the marketed descriptors: \u201cherbal,\u201d \u201ccitrus\u201d and \u201cwoody.\u201d<\/p>\n Interestingly, while it\u2019s commonly believed that terpenes in the cannabis plant are primarily responsible for giving each strain its aroma profile, the researchers said that doesn\u2019t appear to be entirely the case.<\/p>\n \u201cTerpene profiling revealed clear chemical clusters, but terpene profiles alone poorly predicted sensory character,\u201d it says. \u201cTerpinolene was the only compound consistently associated with sensory descriptors, specifically \u2018citrus\u2019 and \u2018chemical.’\u201d<\/p>\n \u201cTotal terpene concentration was also not correlated with the frequency of use of each attribute per sample, suggesting that intensity of aroma\u2026cannot be directly inferred from total terpene content\u2026 [Q]uantitative chemical differences do not translate to perceptual sensory differences.\u201d<\/p>\n \u201cDespite the chemical groupings, sensory and terpene clustering did not correlate well which underscores a key point: terpene chemistry alone does not predict a sample\u2019s sensory profile,\u201d the researchers wrote. \u201cThis is crucial given the overreliance on terpene content in current Cannabis industry marketing and labeling practices.\u201d<\/p>\n \u201cNeither terpene nor volatile sulfur compound profiles strongly predicted sensory perception. These results emphasize the limitations of chemical composition as a proxy for aroma quality.\u201d<\/p>\n<\/blockquote>\n The study also revealed that varieties with high THC and low CBD were \u201cmore frequently described as \u2018skunky,\u2019 \u2018musty,\u2019 and \u2018animalic,\u201d whereas low THC and high CBD strains were commonly associated with the descriptors \u201ccitrus,\u201d \u201cfruity,\u201d and \u201ccandy-like.\u201d<\/p>\n \u201cThese findings are especially relevant considering the current Cannabis<\/em> market, which is saturated with inaccurate potency claims, misleading \u2018effect\u2019 descriptions, and persistent safety concerns, including pesticide contamination,\u201d the authors said. \u201cAs the industry transitions from unregulated to legal frameworks, it\u2019s critical to offer consumers tools for assessing product quality beyond THC content, which has been shown to correlate weakly or negatively with enjoyment, and does not impact aroma.\u201d<\/p>\n \u201cIn fact, aroma is the only known predictor of subjective enjoyment,\u201d they said. \u201cHowever, as this study and others show, terpene profiles do not map cleanly onto sensory attributes, and traditional classifications such as \u2018indica\u2019 and \u2018sativa\u2019 have been shown to be unreliable predictors of Cannabis<\/em> attributes.\u201d<\/p>\n Given the relatively loose associations between terpene content and sensory quality, the study posits that \u201ckey perceptual drivers may lie in other, unmeasured compound classes, such as esters, aldehydes, or other volatiles that behave in complex synergistic manners creating characteristic impacts beyond individual terpene contributions.\u201d<\/p>\n \u201cIn summary, this study developed and systematically evaluated a 25-term lexicon for the aroma of Cannabis<\/em> inflorescence. This work lays a foundation for future work to build upon with an initial list of descriptors and an associated sensory method,\u201d the study<\/a> concludes. \u201cFuture work requires a larger inflorescence sample size, particularly for defining associations between volatile aromatics and aroma descriptors, and should explore expansion of the lexicon as more terms can be evaluated and validated. The inclusion of consumer hedonic data would deepen our understanding of aroma-driven quality perceptions and consumer liking.\u201d<\/p>\n \u201cAdditionally, agronomic and post-harvest variables, including farm origin, harvest maturity, drying methods, storage, and trimming style warrant exploration through both sensory and chemical lenses,\u201d it says. \u201cFinally, as the lexicon presented here is further expanded and built upon with a more globally representative sample set the attributes present can become more expansive and representative of the wide array of Cannabis<\/em>\u00a0aromas. Such insights will help guide breeding efforts and optimize production methods aimed at enhancing the aromatic and experiential quality of\u00a0Cannabis<\/em> products.\u201d<\/p>\n This comes about a month after another team of researchers published a related, comprehensive sensory-guided study of the odor-active compounds in dried cannabis flowers<\/a>, uncovering dozens of previously unknown chemicals that shape the the plant\u2019s distinct fragrance. Combined, the findings expand scientific knowledge of marijuana beyond the common understanding of terpenes, CBD and THC.<\/p>\n The studies build on research related to standardization of cannabis strain identification. In 2022, researchers found that the commonly used marijuana strain labeling system can be highly misleading for consumers<\/a>. The study analyzed the chemical composition of almost 90,000 cannabis samples across six states.<\/p>\n Research earlier this year on cannabis genetics suggested that incentives in the legal marijuana market\u2014such as the\u00a0desire for plants to mature faster and produce more cannabinoids for extraction\u2014may be leading to a decline in biodiversity of the plant worldwide<\/a>.<\/p>\n This paper also builds on a July 2025 scientific review in the journal Molecules that\u00a0took a deep dive into the flavors and aromas of marijuana, examining how the plant\u2019s genetic makeup<\/a>, cultivation methods and post-harvest processing affect the various compounds that give cannabis products their distinctive palate.<\/p>\n The post Scientists Develop New Glossary Of Marijuana Aromas That Industry Could Use To Better Inform Consumers<\/a> appeared first on Marijuana Moment<\/a>.<\/p>\n
Researchers have developed a new glossary to describe cannabis aromas, debunking certain theories about what gives marijuana strains their unique smell profiles and creating a lexicon to better classify varieties for consumers and businesses. Notably, they found that\u2014 contrary to popular belief\u2014terpene content is a poor predictor of cannabis\u2019s scentContinue Reading<\/a><\/span><\/p>\n","protected":false},"author":458,"featured_media":0,"comment_status":"false","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18,15462],"tags":[],"_links":{"self":[{"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/posts\/84032"}],"collection":[{"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/users\/458"}],"replies":[{"embeddable":true,"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/comments?post=84032"}],"version-history":[{"count":1,"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/posts\/84032\/revisions"}],"predecessor-version":[{"id":84033,"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/posts\/84032\/revisions\/84033"}],"wp:attachment":[{"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/media?parent=84032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/categories?post=84032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cannabiscultivatornews.com\/home\/index.php\/wp-json\/wp\/v2\/tags?post=84032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}\n
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\nRead More: Scientists Develop New Glossary Of Marijuana Aromas That Industry Could Use To Better Inform Consumers<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"