MOLECULE
Named in 5 VERIFIED claims about 5 Atlas entries: Pine Needles, Mint, Cinnamon, Rosemary, Black Pepper.
Major component · the claim says “contained high percentages of”
Essential oils from the needles and green cones of four pine species contained high percentages of α-pinene, (E)-caryophyllene, limonene, germacrene D, myrcene and δ-3-carene.
Scope: Needle and cone oils of four Pinus species from one region, reported together; composition, not odour potency. CLM-PINENEEDLE-001 ↗
Major component · the claim says “followed by”
GC-MS analysis of the essential oil of one peppermint cultivar identified menthol and menthone as its main components, followed by limonene, menthyl acetate and β-caryophyllene.
Scope: One peppermint cultivar ('Kristinka'); composition only, and it does not cover spearmint or other mint species. CLM-MINT-001 ↗
Linked to the odour · the claim says “aroma-active compounds that also included”
In a water extract of cinnamon bark assessed by odour activity values, cinnamaldehyde made the largest contribution to the aroma, among aroma-active compounds that also included hexanal, nonanal, limonene, 1-octen-3-ol, linalool and anethole.
Scope: Laboratory extracts of one bark sample; the extraction medium and time changed the profile. CLM-CINNAMON-001 ↗
Reported volatile · the claim says “also present”
Rosemary essential oils from six countries were dominated by α-pinene and 1,8-cineole, with verbenone, borneol, camphor and limonene also present, and at least five chemotypes were distinguished.
Scope: Essential oil composition, not odour potency; proportions vary with origin and chemotype. CLM-ROSEMARY-001 ↗
Major component · the claim says “dominated by”
Essential oils of black pepper fruits from Madagascar and Brazil were dominated by α-pinene, sabinene, β-pinene, δ-3-carene, limonene and β-caryophyllene, and their relative amounts grouped by origin.
Scope: Composition of hydrodistilled essential oils, not the odour potency of each compound; origin and processing change the profile. CLM-PEPPER-001 ↗
XMGQYMWWDOXHJM-UHFFFAOYSA-NChecked against PubChem and Wikidata on 2026-10-02 (identifier check run 37063263965). Every name SmellBook uses must resolve to the same single PubChem compound.
SmellBook lists a molecule only where a VERIFIED claim names it, in the role and scope that claim states. A molecule reported in a smell's evidence is not the whole smell: most smells come from many compounds together, and the studies measured particular samples, such as one cultivar, an essential oil or a cooked product.
Permanent identifier smellbook:molecule:limonene · Graph record (JSON)
Cite as SmellBook. (2026). limonene (molecule). SmellBook knowledge graph, Strategy Phase 369. smellbook:molecule:limonene. https://smellbook.com/molecules/limonene
Dataset history In the SmellBook dataset since Strategy Phase 369.