| 微波-β-环糊精协同提取茶叶中茶多酚及抗氧化性的研究 |
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| 引用本文： | 李志英,李国平,马莉.微波-β-环糊精协同提取茶叶中茶多酚及抗氧化性的研究[J].食品工业科技,2012,33(8):201-203,214. |
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| 作者姓名： | 李志英 李国平 马莉 |
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| 作者单位： | 忻州师范学院化学系,山西忻州,034000 |
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| 基金项目： | 山西省高校科技开发资助项目(20111023);忻州师范学院基金(201002) |
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| 摘 要： | 以β-环糊精及其衍生物为提取介质,用微波辅助提取茶叶中的茶多酚,并用DPPH法和水杨酸法检测了茶多酚提取液的抗氧化性。实验结果表明:以60%乙醇为溶剂,β-环糊精与茶叶质量比为1:0.8,微波作用时间1min,作用功率260W,液料比40:1为最佳提取条件。在β-环糊精介质中茶多酚的提取率和对自由基的清除率均提高,提取液对DPPH.的清除作用小于对羟基自由基(.OH)的清除作用。
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| 关 键 词： | 茶叶 茶多酚 β-环糊精 抗氧化性 DPPH法 水杨酸法 |
Study on the polyphenol extraction in tea of microware and β-CD collaborative and its antioxidant |
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| LI Zhi-ying,LI Guo-ping,MA Li.Study on the polyphenol extraction in tea of microware and β-CD collaborative and its antioxidant[J].Science and Technology of Food Industry,2012,33(8):201-203,214. |
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| Authors: | LI Zhi-ying LI Guo-ping MA Li |
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| Affiliation: | (Department of Chemistry,Xinzhou Teachers College,Xinzhou 034000,China) |
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| Abstract: | Microware-assisted extraction polyphenol content in tea was investigated with aqueous β-CD as medium,and the antioxidant ability of tea polyphenol extract with β-CD as medium was determined by DPPH method and the salicylic acid method.The research showed that the optimum extraction conditions was as follows:m(β-CD):m(tea) was 1:0.8 with 60% ethanol as solvent,microware extraction time was 1min,microware power was 260W,liquid to solid ratio was 40:1,and tea polyphenol extract with β-CD as medium had stronger oxidation stability.The scaveing effect on DPPH· was less than on(·OH). |
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| Keywords: | tea tea polyphenol β-Cyclodextrin antioxdative capacity DPPH method salicylic acid method |
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