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Resveratrol Synonym: Polygonum Cuspidatum Extract. Latin Name: Polygonum Cuspidatum Sieb.et Chemical name: Trans-3,5,4'-Trihydroxystilbene;3,4',5-Stilbenetriol;trans-Resveratrol;(E)-5-(p-Hydroxystyryl)resorcinol(E)-5-(4-hydroxystyryl)benzene-1,3-diol. Botany: The product comes from Polygonum cuspidatum, a Chinese traditional medicine which contain stable, high content of Resveratrol. Polygonum cuspidatum belongs to polygonaceae, is a kind of perennial shrubs. It originates in East Asia, and is widely implanted the middle and south part of China, such as Jiangsu, Jiangxi, Fujian, Shandong, Henan, Shaanxi and Sichuan Province. Description: Resveratrol exists as two geometric isomers: cis- (Z) and trans- (E), with the trans-isomer shown in the top image. The trans- and cis-resveratrol can be either free or bound to glucose. The trans- form can undergo isomerization to the cis- form when exposed to ultraviolet irradiation. Trans-resveratrol in the powder form was found to be stable under "accelerated stability" conditions of 75% humidity and 40 ceilsius degree in the presence of air. Resveratrol content also was stable in the skins of grapes and pomace taken after fermentation and stored for a long period. Part of the Plant Used: Rhizom Appearance: White Crystal Powder. Taste: Bitterish. Solubility: In 70% above ethanol, add 7g resveratrol 98%, the solution be clear and colorless. In Acetone, clear faint yellow or colorless solution at 50mg/ml. Test Method: HPLC CAS#: 501-36-0. Molecular Formula: C14H12O3. Molecular Weight: 228.24 Function: 1. Anti-oxidants; 2. Reduce blood viscosity, inhibiting platelet aggregation and vasodilation to maintain blood flow; 3. Prevent development of cancer, with anti-atherosclerosis and coronary heart disease, ischemic heart disease, highly blood cholesterol in rats; 4. Have estrogen-like effects, can be used to treat breast cancer and other diseases.

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Kingherbs was founded in 1996, specialized in high-value botanical derivatives. Over the years, the company grows from an international trader to a group which operates two factories, offers botanical & herbal ingredients for dietary, food supplement, food additive, nutraceuticals, cosmetics, natural nutrient product, pharmaceuticals and feed.

As a leading manufacturer and trader, Kingherbs offers extended services as to help clients source materials from trusted manufacturers in all parts of China, examples are Chemicals, Minerals & Vitamins and their premix, Fruit and vegetable Powders & concentrated Juices. Kingherbs can offer further processing services as soft gel, capsule,granule and tablet, saving clients the trouble of sourcing for themselves, and assuring quality from our intimate knowledge of the Chinese manufacturers and markets, and by visiting the suppliers personally.

Kingherbs is always up-to-date with current industry practices, and can produce and analyze ingredients according to any desired international standards: USP, EP, BP or CP. Kingherbs wants to be your favored supplier in China, by keeping our quality and services a step ahead.