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1. Name: polygonum cuspidatum extract
2. Natural source: polygonum cuspidatum Sieb. et Zucc
3. Part used: root and stem
4. Appearance: off white powder
5. Specification: resveratrol 20%, 50%, 98%
6. Molecular formula: C14H12O3
7. Assay: HPLC

Applications:
1. Effectively scavenge (neutralize) free radicals and other oxidants and inhibit low density lipoprotein (LDL) oxidation
2. Anti-tumour therapy adjuvant
3. Anti-microbial effect on dermatophytes and some skin pathogenic bacteria