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首页> 外文期刊>Journal of Agricultural and Food Chemistry >Total phenolics and antioxidant activities of fenugreek, green tea, black tea, grape seed, ginger, rosemary, gotu kola, and ginkgo extracts, vitamin E, and tert-butylhydroquinone.
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Total phenolics and antioxidant activities of fenugreek, green tea, black tea, grape seed, ginger, rosemary, gotu kola, and ginkgo extracts, vitamin E, and tert-butylhydroquinone.

机译：胡芦巴，绿茶，红茶，葡萄籽，生姜，迷迭香，葛头可乐和银杏提取物，维生素E和叔丁基对苯二酚的总酚和抗氧化活性。

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摘要

The total phenolics and antioxidant activities of fenugreek, green tea, black tea, grape seed, ginger, rosemary, gotu kola, and ginkgo extracts, vitamin E, and tert-butylhydroquinone, were determined. Grape seed and green tea were analyzed for their phenolic constituents using high-performance liquid chromatography. The total phenolics of the plant extracts, determined by the Folin-Ciocalteu method, ranged from 24.8 to 92.5 mg of chlorogenic acid equivalent/g dry material. The antioxidant activities of methanolic extracts determined by conjugated diene measurement of methyl linoleate were 3.4-86.3%. The antioxidant activity of the extracts using chicken fat by an oxidative stability instrument (4.6-10.2 h of induction time) followed a similar trend in antioxidant activity as determined by the Folin-Ciocalteu method. Seven phenolics in grape seed and green tea extracts were identified that ranged from 15.38 to 1158.49 and 18.3 to 1087.02 mg/100 g of extract, respectively. Plant extracts such as green tea and grape seed extracts can be used to retard lipid oxidation in a variety of food products.
机译：测定了胡芦巴，绿茶，红茶，葡萄籽，姜，迷迭香，豆蔻和银杏提取物，维生素E和叔丁基氢醌的总酚和抗氧化活性。使用高效液相色谱法分析了葡萄籽和绿茶中的酚类成分。通过Folin-Ciocalteu方法测定的植物提取物的总酚含量范围为24.8至92.5 mg绿原酸当量/ g干物质。通过共轭二烯测量亚油酸甲酯测定的甲醇提取物的抗氧化活性为3.4-86.3％。用鸡脂通过氧化稳定性仪器（诱导时间为4.6-10.2 h）提取物的抗氧化活性遵循Folin-Ciocalteu方法测定的类似抗氧化活性趋势。葡萄籽和绿茶提取物中的7种酚含量分别为15.38至1158.49和18.3至1087.02 mg / 100 g提取物。植物提取物（例如绿茶和葡萄籽提取物）可用于阻止多种食品中的脂质氧化。

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