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Polygonum Cuspidatum Resveratrol

Posted at: Offers to Sell and Export | Posted on: Sat 12 Jun, 2010 9:11 am |
polygonum cuspidatum resveratrol
Products Photos CatalogPolygonum Cuspidatum Photos Catalog

Polygonum cuspidatum P.E.

Latin name: Polygonum cuspidatum

Chinese name: Hu Zhang

Family: Polygonaceae



Plant original: Polygonum cuspidatum Sieb.

Part used: Rhizome

Specification: Resveratrol 1%--98% Test By HPLC

1 The summary

The protophyte of Polygonum is regarded as rhizome and root of Polygonum cuspidatum Sieb. et Zucc., perennial herbaceous, being one of the Chinese medicinal herbs most in use in ancient China.

Shape: Perennial herbaceous, with height 1—1.5m. Rhizome lays across underground, in yellow color. Stem is coarse & strong, straight, with no hairs on the surface, and small flower in pale or light pale-green color.

Cultivation: Fond of warm weather in nature, Polygonum better grows in moist & loose soil. Choose the arenaceous soil rich of humus when cultivating. It’s also suitable to be cultivated by the ditch, in woodland of the hillside, and in front of or behind the house. Before soil preparation, apply tens of Kg of organic fertilizer per Mu. Plough the fields deep to 20—30cm. Prepare the earth as bed after ploughing. Planting method: 1. Seed breeding: Dig a pit with space 33x33cm between in the middle of April, in which sow 8—9 pieces of seed. Cover soil with 3cm thick, then watering later. 2. Breeding by root: Before sprouting in early spring, excavate the mother plant, cut the rhizome to small pieces about 15—20cm long, dig the ditches upto 7—10cm deep according to a row space of 66cm. Put 2 pieces of rhizome in horizontal direction every 45cm of space, cover the soil and press tightly. No need to water for the moisture soil. Thin out seedling at 7—10cm of length. Leave 1—2 strong plants in every ditch, intertill and remove weeds in time during growth period. Do topdressing 3 times a year, with nitrogenous fertilizer in spring and phosphate & potash fertilizer in summer, along with keeping the fields moisture. Pay attention to preventing from aphid, epicauta arorha and scarab.

Harvest: Administration by root and rhizome, Polygonum can be digged both in spring and autumn. Root-like stem and stem, leaf are better to be gathered during spring and summer. And the root is better to be gathered in spring and autumn. Cut it to pieces while fresh after cleaning and then leave to dry in the sunshine. Those with strong root and non-withered inside are considerably as good ones. Remove the fibrous root and the tail, cut to pieces after cleaning, leave to dry in the sunshine, keep in dry places. Be cautious of mould-proof & worm-eaten. Prepared small pieces should be stored in wooden case and jar.

Distribution: Polygonum most grows in ravine, by the river and in shady-warm places under trees, mainly distributed in the south of Changjiang River, Shan’xi, Henan and Shandong provinces in China.

2 The main chemical composition

There are mainly anthraquinones, stilbenes, flavonoids, naphthoquinone, polysaccharides, amino acids and trace elements in Polygonum Cuspidatum.

(1) Anthraquinones

With two classifications in Polygonum: 1) dissociative chinones:Mainly as emodin, chrysophanol, rhein, physcion, questin & fallacinol. 2) anthraquinonic glycoside: mainly as physcion-8-ί-D-glucoside & emodin-8-ί-D-glucoside.

(2) Stilbenes:

Stilbene is the major functional ingredient in Polygonum, mainly as resveratrol, polydatin, with the structure as below:

resveratrol, Cas 501-36-0

C14h12o3; 228.25

Chromaticity acicular crystal,mp254~257℃;UVλmax(MeOH)nm(lgε):216(4.40),306(4.47),322(4.45)。IRνmax(KBr)cm-1:3260,1610,1590,1510, 1250, 970.MS/z:228(M+, 100), 211(5)199(3), 114(3), 76(2)。 1HNMR。13CNMR

3) Flavonoids:

Flavonoids in Polygonum contains glucofrangulin, quercetin, quercetin-3-arabinoside, quercetin –3 - rhamnoside, quercetin – 3 - glucoside, quercetin-3-galactoside, luteolin-7-glucoside & three kinds of derivative of protocatechuic acid, (+)-catechin, 2, 5-dimethyl-7-hydroxychromone in apigenin.

(4) Naphthoquinone & anthraquinonic glycoside

There are 2-methoxy-6-acetylmethyljuglone & torachrysone – 8 – O – D - glucoside in naphthoquinone & anthraquinonic glycoside, which are isolated from Polygonum.

(5) Other ingredients:

There are 7 – hydroxy – 4 – methoxy – 5 - methylcoumarin in Polygonum. Polygonum still contains of free amino acids, and inorganic elements such as Cu, Fe, Mn, Zn, K, Se & Mo, further with palmitate, stearic acid and arachidonic acid.

Company Contact:

kingherbs2010 photo
Contact Name: Linda Ye
Company Name: Kingherbs Inc
Email: Email
Tel: 86-898-36320217
Fax: 86-898-36320270
Street Address: 8# 17B, Olympic Garden,
Middle Haixiu Road, Haikou
570206, Hainan, China
Website: http://www.kingherbs.com.cn
Member name: kingherbs2010
Country: China-CN China
Member Since: 12 June 2010
Total Leads: 2 kingherbs2010 Import Export Business Leads
Business focus: Polygonum Cuspidatum Extract, Resveratrol, Polydatin, Emodin, Rosemary Extract, Carnosic Acid, Rosmarinic Acid, Ursolic Acid, Jerusalem Artichoke
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