Grape Seed Extract,China jiatianbio price supplier

grape seed extract
Specifications :                                                         
-Proanthocyanidins 99% 95%
-Polyphenols 95% 90% 85% 80%;
-Oligomeric Proanthocyanidins 15% 20% 30% 40%;
-ORAC8000-18000umol/g (Brunswick Lab Tested),                    
-Water soluble GSE 8-10g dissolved in 100ml purified water  25 ^o C
Latin Name : Vitis Viniferal L.
Appearance : Fine Red Brown Powder
Part of the Plant Used : Seed
CAS No .: 84929-27-1
Introductions :
Proanthocyanidin (PA or PAC), also known as procyanidin, oligomeric proanthocyanidin (OPC), leukocyanidin, leucoanthocyanin and condensed tannins, is a class of flavanols. Proanthocyanidins are essentially polymer chains of flavonoids such as catechins. One was discovered in 1936 by Professor Jacques Masquelier and called vitamin P, although this name did not gain official category status and has since fallen out of usage. It was Masquelier who first developed techniques for the extraction of proanthocyanidins from certain plant species.
Polyphenols are a group of chemical substances found in plants, characterized by the presence of more than one phenol unit or building block per molecule. Polyphenols are generally divided into hydrolyzable tannins (gallic acid esters of glucose and other sugars) and phenylpropanoids, such as lignins, flavonoids, and condensed tannins.
Fuctions :
1.Anti-oxidant,anti-aging
2.Cardiovascular diseases
3.Anti-cancer
Package : Packed in Paper-Drum and two pieces of plastic bag inside.  N.W.: 25kg/drum
Storage condition : Sealed in well-closed container and avoid moisture and light.
Shelf life : Two years according to storage condition.