Grape Seed Extract
Grape seed extract is one of the strongest antioxidants, free-radical scavenger currently found in nature. The antioxidant activity of grape seed extract is 50 times that of vitamin E, 20 times that of vitamin C, can effectively prevent and cure more than 80 kinds of common diseases caused by free radicals. Grape seed extract has super function of slowdown aging and immunity enhancement. As a potent antioxidant and free radical fighter, it is widely used in pharmaceutical, cosmetic and food industries.
Staherb Grape Seed Extract
1. Grape seed extract (95% procyanidins; 80% polyphenol) is mainly used as antioxidant in health care products, cosmetics and functional food.
2. Grape skin extract (40% OPC, 30% polyphenol), mainly used for edible wine and functional beverage coloring agent.
3. Grape seed oil is widely used in the field of cosmetics and edible oil.
Plant Sources
In the process of grape juice and wine, large amounts of by-products is produced, such as grape seed, grape skins, etc. The study found that grape seed polyphenols either in content or species is more than grape pulp, and these polyphenols have powerful antioxidant effect. Therefore, grape seed from winery is used as raw material to extract active ingredient rich in polyphenols, Grape Seed Extract(GSE).
3. Grape Seed Extract Manufacturer Specifications
| Grape Seed Extract | 95%OPC |
| 98%OPC; 80%Polyphenols | |
| Different specification can be customized | |
Indicator Component
Grape seed extract polyphenols (GSP) are divided into monophenol and aggregation polyphenols, monophenol is primarily gallic acid, catechin and epicatechin and catechin, epicatechin gallic acid ester. Aggregation polyphenols is mainly composed of several flavanone polymerization of different degree of polymerization of procyanidins.
According to different degree of polymerization, procyanidins divided into oligomeric procyanidins (OPCs) and high polymeric procyanidins (PPCs): the study found that grape seed procyanidins have dimers (two molecules), trimers (three molecules) four molecules,five molecules, etc.Among them 2 ~ 4 polymers is oligomeric procyanidins (OPCs).And oligomeric procyanidins is the strongest biological activity of grape seed extract, therefore the content of OPCs in GSE determines the quality of the product.
