Grape seed generally accounts for 3% to 7% of the total weight of grapes. As a by-product of the wine industry, it is a high-quality edible oil resource. Grape seed oil content is 10% to 20%, and the proportion of linoleic acid in the grape seed oil of most varieties is more than 70% of the total fatty acids, and some is even as high as 81%, and varieties with less than 60% are extremely rare. It can be seen that grape seed oil belongs to high linoleic acid type oil
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