What are the full physicochemical properties of this perilla leaf oil?
Relative density 0.900–0.970 (20°C), refractive index 1.465–1.500 (20°C), perillaldehyde content 18.5–22.7% per the 2025 Red Perilla Oil specification (PA-type natural levels 50–70%), heavy metals Pb ≤ 0.15 mg/kg per the 2025 red perilla specification, and a 36-month shelf life.
Physicochemical Properties
| Parameter | Value |
|---|---|
| Relative density (20°C) | 0.900–0.970 |
| Refractive index (20°C) | 1.465–1.500 |
| Appearance | Clear to pale yellow to yellow-green oily liquid |
| Color | Pale yellow to light greenish yellow (occasionally purple tinge) |
| Perillaldehyde (spec.) | 18.5–22.7% (2025 red perilla spec; PA-type typical 50–70%) |
| Rosmarinic acid | ≥ 3.2% (2025 red perilla spec) |
| Lead (Pb) | ≤ 0.15 mg/kg (2025 red perilla spec, 67x stricter than common EO limits) |
| Solubility | Soluble in ethanol and fixed oils; insoluble in water |
| Shelf life | 36 months |
- Quality control follows GB/T 14457.1 (refractive index), GB/T 14454.2 (density), and GB/T 14457.2 (optical rotation)
- The 2025 draft food-additive standard for perillaldehyde sets refractive index 1.498–1.502 and optical rotation -18° to -22° for the pure compound
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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.
