Grape seed anthocyanins

Grape seed extract is a nutritious food refined from the effective active nutrients extracted from natural grape seeds with vitamin E and other main raw materials. Grape seed extract is a new type of high-efficiency natural antioxidant substance extracted from grape seed that cannot be synthesized in the human body. It is currently found in nature with the strongest anti-oxidant and free radical scavenging ability. Its antioxidant activity is 50 times that of vitamin E and 20 times that of vitamin C. It can effectively remove excess free radicals in the body and delay aging. And enhance immunity.

method of extraction

GSPE extraction mainly adopts water extraction method, organic solvent extraction method, microwave method, supercritical CO2 method, etc. Purification methods mainly include solvent method and adsorption resin method.

The macroporous resin method is a purification method developed in the past 10 years. It has unique adsorption selectivity, is not affected by the presence of inorganic substances, convenient regeneration, mild desorption conditions, simple operation, high recovery rate, safety and reliability, and no pollution to the environment, so it is more suitable for large-scale industrial production.

Specification

Procyanidins ≥95% Oligomeric proanthocyanidins ≥85% Polyphenols Polyphenol ≥90% Polyphenols ≥95% Polyphenols/oligomeric procyanidins ≥95%/60% Procyanidins/oligomeric proanthocyanidins ≥95%/60%

test methods

There is no uniform standard for the determination method of proanthocyanidins. The literature reports include n-butanol-hydrochloric acid method, vanillin-hydrochloric acid method and iron salt catalytic colorimetry, in addition to thin layer chromatography, HPLC, HPLC-MS methods. Wait.