Giant Knotweed P.E.

Giant Knotweed P.E.

【Plant Origin】：Giant Knotweed (Latin name) Polygonum cuspidatum Sieb. Et Zucc. Herbs perennial, rhizome stout, transverse. Stems erect, not only for viewing, but also for food. It is produced in southern shaanxi, southern gansu, eastern China, central China, south China, sichuan, yunnan and guizhou, as well as north Korea and Japan. It was born on the hillsides of thickets, valleys, roadsides, fields and wetlands. 

【Production Specification】：HPLC，Resveratrol,：20% 、50%、98%

【Physicochemical Property】:Name：Resveratrol

Molecular formula：C₁₄H₁₂O₃

Molecular weight：228.24

【Solubleness】: Soluble in water, ethanol, and methanol.

【Technical indicators】

1. Appearance: Brown Powder；

2. Total ash content≤5%，acid insoluble ash≤2.0%；3. Dry weight loss≤5.0%；

4. Heavy metal≤10ppm（Pb≤2ppm，Hg≤1ppm，Cd≤0.5ppm，As≤2ppm）；

5. Microorganism (non-irradiation)：Total Plate Count≤5000CFU/g；Total Yeast&Mold ≤500CFU/g；Salmonella：Negative；Coliform：Negative。

【Detection method】   HPLC