Pterostilbene is a natural stilbene compound found in small amounts in blueberries, grapes, and Indian pterostilbene. The appearance of Pterostilbene raw material is white or off-white powder crystal.
Its properties are similar to resveratrol, but pterostilbene has two methoxy groups, which increases its lipophilicity and bioavailability.
Due to its anti-aging effects, pterostilbene is often used as an ingredient in dietary supplements. Sometimes used in combination with NMN, resveratrol, or curcumin.
ITEM | STANDARD | TEST RESULT |
Pterostilbene | 99% Min | 99.02 % |
Appearance | White or off -white powder | Complies |
Loss on drying | ≤0.2% | 0.03% |
Moisture | ≤0.2% | 0.06% |
Melting Point | 92℃-96℃ | 94℃ |
Max Single Impurity | ≤0.1% | 0.03% |
Total Heavy Metals | ≤10ppm | Complies |
As | ≤1.0ppm | 0.58ppm |
Pb | ≤1.0ppm | 0.32ppm |
Cr | ≤1.0ppm | 0.39ppm |
Conclusion | Conform with specification | |
Storage | Store in cool and dry places. Keep away from strong light and heat |
Pterostilbene has rich medicinal value and has multiple biological activities such as antioxidant, antibacterial and lipid-lowering.
Berberine has low bioavailability and poor intestinal absorption.
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