Grape seed is the seed of grapes, and it is the waste of winery. After drying, the product is obtained after separating the grape skin and grape stems. Grape seed is rich in amino acids, vitamins and minerals, etc. It has health care and beauty effects.

Grape seed contains polyphenols (GPS), mainly catechins and procyanidins. Catechins, including catechin, epicatechin and gallic acid esters, are the main monomers in grape seeds and the constituent units of oligomers and polymers of procyanidins.
Grease
Grape seed is rich in fats and oils, accounting for about 12% to 15% of its weight. The oil contains a lot of unsaturated fatty acids, and the content of linoleic acid is between 58% and 78%. A
Volatile components
Grape seed also contains a small amount of volatile components, most of which are alcohols, phenols, terpenes, and all have high biological activity. A
Other ingredients
In addition to the above substances, grape seed also contains crude protein, amino acids, vitamins A, E, D, K, P and various trace elements, such as calcium, zinc, iron, magnesium, copper, potassium, sodium, manganese , Cobalt, etc.