Bulk Clove Oil: Eugenol Assay, Dosage and Sourcing
5 min read
Clove oil is bought on eugenol assay and on whether the material is bud, leaf or stem distillate. The three are not interchangeable in flavour work, even at matching eugenol figures.
Bud, leaf or stem — pick deliberately
Each fraction has a distinct commercial position. Specify the plant part explicitly on the purchase order.
- Bud oil: rounded, sweet-spicy; preferred for flavour and fine fragrance
- Leaf oil: harsher, higher eugenol; typical feedstock for eugenol isolation
- Stem oil: intermediate profile, cost-efficient for functional use
- Eugenol assay typically 80% minimum for commercial bud oil
Typical dosage by application
Eugenol is a restricted fragrance allergen and a potent flavour material, so dosage discipline is essential.
| Application | Typical use level | Notes |
|---|---|---|
| Oral care | 0.05 – 0.5% | Analgesic-associated note; regulatory status varies by market |
| Savoury & bakery flavour | 5 – 50 ppm | Very high impact; overdose reads medicinal |
| Fine fragrance / spice accords | 0.1 – 1.0% in compound | IFRA restriction applies to eugenol |
| Home & personal care | 0.05 – 0.3% | Allergen labelling thresholds apply in the EU |
| Nutraceutical / functional | As per dossier | Follow national food-supplement limits |
Documentation to insist on
Clove oil crosses food, cosmetic and sometimes pharmacopoeial use, so the paperwork pack should cover all three.
- COA with eugenol assay by GC and full chromatogram
- Allergen declaration listing eugenol content for EU labelling
- MSDS, non-GMO and BSE/TSE-free statements
- Plant part and country of origin stated on the COA
Products covered in this guide
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