Valencene (Eudesmane Sesquiterpene · Anti-inflammatory · Antihistaminic · Orange Peel)
| Compound | Valencene |
| Chemical class | Terpenoid — Sesquiterpene Hydrocarbon (Eudesmane skeleton) |
| CAS | 4630-07-3 |
| Primary source | Citrus sinensis (Valencia orange peel oil), Citrus paradisi (grapefruit) |
| Key applications | Anti-inflammatory, antioxidant, flavouring, fragrance, cosmetic active |
| Claim strength | Moderate |
| Typical form | Valencia orange peel oil constituent (4–10% valencene); valencene isolate |
| Buy from Herbuno | Citrus Sinensis Orange Peel Extract Powder → |
Name origin: From Valencia, Spain — the orange-growing region where it was first characterised in Valencia orange (Citrus sinensis cv. Valencia) peel oil. Valencene is a bicyclic sesquiterpene hydrocarbon with the eudesmane skeleton. It is the precursor to nootkatone (the primary aroma compound of grapefruit) via allylic oxidation. Traditional use: Citrus peel preparations have extensive traditional use across Mediterranean, Indian, and East Asian traditions as digestive bitters, aromatic tonics, and flavouring agents. Valencene itself has not been individually targeted in traditional medicine but contributes to the aroma and pharmacological profile of citrus peel preparations. Research trajectory: Valencene has documented anti-inflammatory (NF-κB inhibition), antioxidant, antihistaminic (TH2 suppression, mast cell stabilisation), and anti-tumour (in liver cancer cell line models) properties in preclinical research. It is primarily a high-value fragrance and flavouring compound, with growing cosmeceutical interest for skin anti-inflammatory and anti-ageing applications. Commercial source: Available as a constituent of orange peel extract from Herbuno. See sourcing options below.
Evidence for Valencene Applications
Anti-inflammatory: Valencene inhibits NF-κB, reduces COX-2, and decreases TNF-α, IL-6, and IL-1β in macrophage models. In vivo anti-inflammatory efficacy in arthritis and atopic dermatitis animal models is confirmed. The eudesmane sesquiterpene scaffold provides a distinct binding profile for anti-inflammatory enzyme targets. Claim strength: Moderate.
Antihistaminic and anti-allergic: Valencene inhibits IgE-mediated mast cell degranulation and reduces histamine release. TH2 immune response suppression (reducing IL-4, IL-5, IL-13 production) is documented in atopic dermatitis models. Relevant for allergy and skin hypersensitivity formulations. Claim strength: Moderate.
Antioxidant: Valencene contributes to the overall antioxidant capacity of orange peel extract, activating Nrf2 and directly scavenging reactive oxygen species. Contributes to the antioxidant properties of citrus peel preparations. Claim strength: Moderate.
Skin anti-inflammatory and cosmeceutical: Topical valencene reduces skin inflammation and erythema in UV-irradiated skin models. The anti-inflammatory and mast cell-stabilising activity makes it relevant for sensitive skin and rosacea formulations. Claim strength: Moderate (cosmeceutical in vitro and animal data).
Citrus Sinensis Orange Peel Extract Powder →
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Dosage & Formulator Specification
No established human supplement dose for isolated valencene. For topical applications: valencene at 0.1–1% in finished cosmetic formulations for anti-inflammatory and antihistaminic skin benefit. For flavouring applications: valencene at 0.001–0.01% in food products (GRAS-approved flavouring at these concentrations). Orange peel extract (from Herbuno) co-delivers valencene alongside d-limonene (the dominant monoterpene), flavanones (hesperidin, naringenin), and other sesquiterpenes. For valencene-specific applications, request GC sesquiterpene profile of the orange peel extract to determine valencene content.
Frequently Asked Questions — Valencene
What is the relationship between valencene and nootkatone?
Valencene is the biosynthetic precursor to nootkatone — the primary aroma compound of grapefruit. Nootkatone is formed from valencene by allylic oxidation (valencene + molecular oxygen → nootkatone via CYP450 or peroxidase enzymes). Nootkatone is the compound responsible for grapefruit’s characteristic bitter citrus aroma and has attracted research interest for its own anti-inflammatory, anti-obesity (AMPK activation), and mosquito-repellent properties. Valencene and nootkatone are structurally and pharmacologically related, with the oxidised form (nootkatone) being more potent for several of these activities.
Is valencene the same as nerolidol or bisabolene?
No — valencene (eudesmane skeleton), nerolidol (acyclic), and bisabolene (bisabolane skeleton) are different sesquiterpene classes from different biosynthetic branches. They share the C15 sesquiterpene carbon number but have completely different ring structures and pharmacological profiles. All occur in citrus to varying extents, which can cause nomenclature confusion in citrus oil analysis.
Can valencene be used in a hay fever/seasonal allergy supplement?
Yes — the antihistaminic mechanism (mast cell stabilisation, TH2 suppression, histamine release inhibition) is directly relevant to seasonal allergy management. Position as "may support healthy immune response to environmental allergens" or "studied for mast cell-stabilising activity." Combine with quercetin (TAS2R-mediated mast cell stabilisation), rosmarinic acid (complement inhibition), and vitamin C (histamine catabolism support) for a multi-mechanism allergy support formulation.
Why is valencene a premium fragrance ingredient?
Valencene has a fresh, sweet, woody-citrus aroma that is distinct from the more common citrus monoterpenes (limonene, linalool). It is used in high-end citrus fragrances as a sesquiterpene base note that provides depth and longevity to citrus accords — citrus monoterpenes evaporate quickly (top notes), while valencene’s higher molecular weight (C15) provides longer-lasting citrus character. It is commercially produced by biotransformation using engineered yeast fermentation, providing a renewable supply independent of citrus extraction.
Related compounds: Limonene, Cedrene, Guaiol, Nerolidol
Claim-strength scale – High = multiple human RCTs; Moderate = limited trials or strong preclinical convergence; Emerging = early-stage lab or animal data.
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