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Antioxidant Activity of Phenolic Compounds from Different Grape Wastes

机译:不同葡萄废料中酚类化合物的抗氧化活性

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Winery pomace (from red and white grapes) was extracted under various conditions using different solvents. The antioxidant activity of solvent extracts was investigated by DPPH radical scavenging method. Ethanol extract exhibited the highest antioxidant activity compared to the other solvent (BuOH, EtOAc, Me2Cl2 and pet.ether). There was a correlation between antioxidant activity and total phenol content. HPLC analysis of the extracts showed that gallic and cinnamic acid was the major phenolic compounds in winery pomace. Various phenolic compounds such as catechin, rutin, rosmarinic, chlorogenic, caffeic, vanillic, coumaric acids were also identified.
机译:在不同条件下,使用不同的溶剂提取酿酒厂果渣(来自红葡萄和白葡萄)。用DPPH自由基清除法研究了溶剂提取物的抗氧化活性。与其他溶剂(BuOH,EtOAc,Me2Cl2和石油醚)相比,乙醇提取物具有最高的抗氧化活性。抗氧化剂活性与总酚含量之间存在相关性。提取物的HPLC分析表明,没食子酸和肉桂酸是酿酒厂果渣中的主要酚类化合物。还鉴定了各种酚类化合物,例如儿茶素,芦丁,迷迭香,绿原酸,咖啡酸,香草酸,香豆酸。

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