Polyphenolics in grape seeds: Biochemistry and functionality.
Polyphenolics in grape seeds: Biochemistry and functionality.
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DOI：
10.1089/109662003772519831
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发表时间：
2003-12-01
影响因子：
2.4
通讯作者：
Kakuda, Yukio
中科院分区：
文献类型：
--
作者：
Shi, John;Yu, Jianmel;Kakuda, Yukio
葡萄籽是酿酒厂和葡萄汁工业的废物。这些种子含有脂质，蛋白质，碳水化合物和5-8%的多酚，具体取决于品种。葡萄籽中的多酚主要是类黄酮，包括没食子酸、单体黄烷-3-醇儿茶素、表儿茶素、没食子儿茶素、表没食子儿茶素和表儿茶素3-O-没食子酸酯，以及原花青素二聚体、三聚体和更高度聚合的原花青素。葡萄籽提取物被认为是一种强大的抗氧化剂，可以保护身体免受过早衰老，疾病和腐烂。葡萄籽主要含有酚类物质，如原花青素（低聚原花青素）。科学研究表明，原花青素的抗氧化能力是维生素E的20倍，是维生素C的50倍。广泛的研究表明，葡萄籽提取物在许多健康领域都是有益的，因为它的抗氧化作用与胶原蛋白结合，促进年轻的皮肤，细胞健康，弹性和灵活性。其他研究表明，原花青素有助于保护身体免受阳光伤害，改善视力，提高关节，动脉和身体组织（如心脏）的灵活性，并通过加强毛细血管，动脉和静脉来改善血液循环。从葡萄籽中分离出的最丰富的酚类化合物是儿茶素、表儿茶素、原花青素以及一些二聚体和三聚体。
Grape seeds are waste products of the winery and grape juice industry. These seeds contain lipid, protein, carbohydrates, and 5-8% polyphenols depending on the variety. Polyphenols in grape seeds are mainly flavonoids, including gallic acid, the monomeric flavan-3-ols catechin, epicatechin, gallocatechin, epigallocatechin, and epicatechin 3-O-gallate, and procyanidin dimers, trimers, and more highly polymerized procyanidins. Grape seed extract is known as a powerful antioxidant that protects the body from premature aging, disease, and decay. Grape seeds contains mainly phenols such as proanthocyanidins (oligomeric proanthocyanidins). Scientific studies have shown that the antioxidant power of proanthocyanidins is 20 times greater than vitamin E and 50 times greater than vitamin C. Extensive research suggests that grape seed extract is beneficial in many areas of health because of its antioxidant effect to bond with collagen, promoting youthful skin, cell health, elasticity, and flexibility. Other studies have shown that proanthocyanidins help to protect the body from sun damage, to improve vision, to improve flexibility in joints, arteries, and body tissues such as the heart, and to improve blood circulation by strengthening capillaries, arteries, and veins. The most abundant phenolic compounds isolated from grape seed are catechins, epicatechin, procyanidin, and some dimers and trimers.