Giant Knowtweed P.E.
[Other names]: piebald bamboo, acid tube stem, sour soup stalk, spotted cane root, yellow ground elm
【Plant origin】: The dried rhizome of the perennial shrub-like herbaceous plant Polygonum cuspidatum sieb.et zucc
[Distribution area]: distributed in Northwest, East China, Central China, South China and Southwest China
【Product specifications】:Resveratrol: 20% 50% 98%
[molecular formula]: C14H12O3
【Molecular weight】: 228.24
[Detection method]: HPLC
2. Technical indicators
1. Appearance: brown powder;
2. Total ash ≤5%, acid insoluble ash ≤2.0%;
3. Loss on drying ≤ 5.0%;
4. Heavy metals≤ 10ppm (Pb≤2ppm, Hg≤1ppm, Cd≤0.5ppm, As≤2ppm);
5. Microorganisms (non-irradiation): total colony number≤ 5000CFU/g; Mold and yeast≤ 500CFU/g;
Salmonella: Negative; E. coli: Negative.
3. Packaging and storage
[Product packaging]: double-layer plastic bag inside, aluminum foil bag or cardboard drum outside
【Packing specifications】: 10Kg/barrel, 25Kg/barrel
[Storage conditions]: Place in a cool, dry, dark, and high temperature place.
[Shelf life]: two years
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