| 玉米须萃取物的抗氧化活性 |
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| 引用本文： | 刘平,段玉峰,肖红,牛鹏飞.玉米须萃取物的抗氧化活性[J].江苏农业学报,2006,22(3):293-296. |
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| 作者姓名： | 刘平 段玉峰 肖红 牛鹏飞 |
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| 作者单位： | 陕西师范大学食品工程系,陕西,西安,710062 |
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| 摘 要： | 将玉米须乙醇提取物再用氯仿、乙酸乙脂、正丁醇和甲醇分别萃取,获得极性不同的5个组分,比较这5种不同溶剂萃取物在二苯基苦基苯肼(DPPH)体系及在Fe2 诱发卵黄脂蛋白多不饱和脂肪酸(PUFA)过氧化体系中的抗氧化活性。结果表明:在DPPH体系中,正丁醇萃取物的抗氧化活性最强,氯仿萃取物次之;在Fe2 诱发脂蛋白PUFA过氧化体系中,氯仿萃取物的抗氧化活性最强,乙酸乙酯萃取物次之。结果还表明,这5不同溶剂萃取物在不同测试体系中的抗氧化活性顺序不同。
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| 关 键 词： | 玉米须 DPPH体系 PUFA体系 抗氧化活性 |
| 文章编号： | 1000-4440（2006）03-0293-04 |
| 收稿时间： | 2005-12-04 |
| 修稿时间： | 2005-12-04 |
Antioxidative Activities of Corn Silk Extracts |
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| LIU Ping,DUAN Yu-feng,XIAO Hong,NIU Peng-fei.Antioxidative Activities of Corn Silk Extracts[J].Jiangsu Journal of Agricultural Sciences,2006,22(3):293-296. |
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| Authors: | LIU Ping DUAN Yu-feng XIAO Hong NIU Peng-fei |
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| Abstract: | Five components with different polarities in the ethanol extracts of corn silk were obtained by using chloroform,ethyl acetate,n-butanol and methanol as extractant,respectively.The anti-oxidative activities of the five extractions were compared in two systems,DPPH system and Fe~(2 )inducing PUFA system.N-butanol extract had the strongest scavenging activity to DPPH free radicals,and the next was chloroform extraction.The anti-oxidative activity of chloroform extract in the Fe~(2 ) inducing PUFA system was the strongest,followed by ethyl acetate extract.The same extract had different anti-oxidative activities in these two systems. |
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| Keywords: | corn silk DPPH system PUFA system anti-oxidative activity |
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