How is this storax balsam oil extracted, and which method is preferred?
Storax balsam oil is produced by three main routes: traditional steam distillation of the balsam resin, supercritical CO2 extraction, and ethanol refining of the crude resin — with a patented fermentation-distillation process available for premium food-grade profiles.
Extraction Methods
| Method | Process | Key advantage |
|---|---|---|
| Steam distillation (traditional) | Water-vapor distillation of the balsam resin; heavy-oil collector (storax oil is denser than water) | Classic balsamic profile; simplest; average yield ~12.4% |
| Supercritical CO2 extraction | CO2 at 40 MPa extraction / 30 MPa separation, 5L pilot & 100L production vessels, closed-loop refrigeration | Yield up to 18.7% (vs 12.4% steam), heat-sensitive components retained +39.5%, cinnamyl esters extracted ≥92.4% (vs 62.3%), no solvent residue |
| Ethanol refining | Crude resin dissolved in 90% ethanol, filtered, ethanol removed under vacuum | Cleans resin, produces refined balsam oil fraction |
| Fermentation + distillation (CN 109536283A) | Bark residue crushed to 40–120 mesh, immobilized microbial/enzyme hydrolysis at 35–65°C pH 4.0–6.0 for 1–6 d, then steam distillation, liquid-liquid extraction with ethyl acetate + zinc acetate at 55–75°C, vacuum concentration at 45–55°C | Richer floral/vanilla/cassia aroma, reduced irritation, lower-cost raw material |
- Atmospheric superheated-steam distillation (155–175°C, 1,980–2,700 g/h steam, ~45 min) also yields lighter, high-quality oil favored for TCM material pretreatment (Gardner color 9, acid value 50.89 mg/g)
- We recommend supercritical CO2 extraction for fine-perfumery and premium TCM grades; steam distillation remains the standard for conventional applications
- Every batch is confirmed by GC fingerprinting (ChP 8 characteristic peaks) before release
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This article was published on 2026-09-07, and last updated on 2026-09-07. The article will be continuously updated.
