| 黄肉甘薯多酚类提取物的抗氧化活性研究 |
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| 引用本文： | 师超,卞科. 黄肉甘薯多酚类提取物的抗氧化活性研究[J]. 河南工业大学学报(自然科学版), 2011, 32(3): 16-20 |
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| 作者姓名： | 师超 卞科 |
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| 作者单位： | 河南工业大学粮油食品学院,河南郑州,450052 |
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| 摘 要： | 采用乙醇浸提法分别提取黄肉甘薯肉和皮的多酚类物质,薯皮和肉总多酚的含量分别为15.654 mg/g和4.938 mg/g,薯皮中的含量约为薯肉的3.17倍.并以没食子酸为对照品对黄肉甘薯肉和皮多酚类提取物的抗氧化活性进行了研究.通过5种不同的抗氧化体系,分别测定了黄肉甘薯肉和皮多酚类提取物对超氧阴离子自由基、过氧化氢、羟基自由基的清除能力、还原能力以及对食用油脂的抗氧化性的影响.结果表明:黄肉甘薯肉和皮多酚类提取物具有与没食子酸一样良好的抗氧化性能,是一种具有开发利用价值的天然抗氧化剂.
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| 关 键 词： | 黄肉甘薯 多酚类提取物 抗氧化活性 天然抗氧化剂 |
STUDY ON ANTIOXIDANT ACTIVITY OF POLYPHENOL EXTRACTS FROM YELLOW FLESH SWEET POTATO |
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| SHI Chao,BIAN Ke. STUDY ON ANTIOXIDANT ACTIVITY OF POLYPHENOL EXTRACTS FROM YELLOW FLESH SWEET POTATO[J]. Journal of Henan University of Technology Natural Science Edition, 2011, 32(3): 16-20 |
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| Authors: | SHI Chao BIAN Ke |
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| Affiliation: | SHI Chao,BIAN Ke(School of Food Science and Technology,Henan University of Technology,Zhengzhou 450052,China) |
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| Abstract: | In this paper,we respectively extracted polyphenols from the flesh and peel of yellow flesh sweet potato by ethanol extraction method,studied the antioxidant activity of the polyphenol extracts from the flesh and peel of yellow flesh sweet potato using gallic acid as the reference control,and respectively determined the effects of the polyphenol extracts on scavenging superoxide anion radicals,hydrogen peroxide and hydroxyl radicals,the reduction capability,and the oxidation resistance to edible oils.The re... |
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| Keywords: | yellow flesh sweet potato polyphenol extract antioxidant activity natural antioxidant |
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