Grape seed extract is a purely natural substance, and it is one of the most effective antioxidants from plant sources found so far. Tests show that its antioxidant effect is 30-50 times that of vitamin C and vitamin E. It is mainly a mixture of polyphenols extracted from grape seeds. The most active one is oligomeric proanthocyanidins, which is a new type of high-efficiency natural antioxidant substance that cannot be synthesized in the human body.
KingSci Grape seed extract extraction method
Studies have found that among many plant tissues, grape seeds and pine bark extracts have the highest content of proanthocyanidins, and the main methods for extracting proanthocyanidins from grape seeds are solvent extraction, microwave extraction, ultrasonic extraction and Supercritical CO2 extraction method and so on. Grape seed proanthocyanidin extract contains many impurities, and further purification is needed to improve the purity of proanthocyanidin.
The ethanol concentration has the most significant effect on the extraction rate of grape seed proanthocyanidins, and the extraction time and temperature have no significant effect on the extraction rate of grape seed proanthocyanidins. The optimal extraction process parameters are: ethanol concentration 70%, extraction time 120min, material-liquid ratio 1:20.
The static adsorption experiment showed that the adsorption rate of HPD-700 to proanthocyanidins was the highest 85%, followed by DA201, which was 82. The same; in the desorption test, DA201 resin has the highest desorption rate of proanthocyanidins at 60% 58%, while the desorption rate of HPD-700 on proanthocyanidins is only 50% 83%. Combining adsorption and desorption experiments, DA210 resin is determined to be the best adsorption resin for separating proanthocyanidins.
Grape seed extract Benefits
Grape seed extract has anti-aging effects. Unlike most antioxidants, it can cross the blood-brain barrier and protect the blood vessels and brain from the damage of free radicals that increase with age. The antioxidant effect of grape seed extract can protect structural tissues from being damaged by free radicals, thereby delaying aging.
The role of grape seed extract in beauty and skincare. Grape seed has a reputation as "skin vitamin" and "oral cosmetics". It can protect collagen, improve skin elasticity and luster, whiten, moisturize, and remove freckles; reduce wrinkles, keep skin soft and smooth; remove acne and heal scars.
Anti-allergic effect of grape seed extract. Going deep into the cell fundamentally inhibits the release of the sensitizing factor "histamine", improves the cell's tolerance to allergens; clears sensitizing free radicals, anti-inflammatory and anti-allergic; effectively regulates the body's immunity, and completely improves allergic physique.
Radiation protection of grape seed extract. Effectively prevent and reduce the damage of ultraviolet radiation to the skin, inhibit the lipid peroxidation caused by free radicals; reduce the damage to the skin and internal organs caused by radiation from computers, mobile phones, and televisions.
The effect of grape seed extract in lowering blood lipids. The grape seed extract is rich in more than 100 effective substances. Among them, unsaturated fatty acid linoleic acid (which is essential but not synthesized by the human body) accounts for 68-76% and ranks first among oil crops. Consumption of 20% of cholesterol can effectively reduce blood lipids.
