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投稿时间：2018-05-20
投稿时间：2018-05-20
中文摘要: 利用超声波水提法从板栗壳中提取多酚类物质，通过探究料水比、超声时间、超声功率和超声温度对板栗壳多酚提取率的影响，优化提取工艺；测定板栗壳多酚提取液总抗氧化能力及其对DPPH·、O2-·、ABTS+·、NaNO2、·OH的清除能力。结果表明，超声波水提板栗壳多酚最优提取工艺条件如下：料液比1∶45（g/mL）、超声时间1 h、超声功率350 W、超声温度65℃；板栗壳多酚总抗氧化能力优于VC，对5种抗氧化体系均有一定的清除能力，且在一定质量浓度下其对DPPH·、ABTS+·、NaNO2和·OH的清除效果优于VC。因此，板栗壳多酚是一种具有较好抗氧化活性的天然抗氧化剂。
Abstract:Abstract：Polyphenols were extracted from chestnut shells by ultrasonic water extraction in this study.The effects of material-water ratio，ultrasonic time，power and temperature on extraction result were investigated.Antioxidant properties of chestnut shell polyphenols were determined through the scavenging ability of DPPHo，O2-·，ABTS+·，NaNO2，·OH and total antioxidant capacity.Results showed that the optimum extraction parameters were as follows：the ratio of material and water 1 ∶45（g/mL），ultrasound time 1 h，ultrasound power 350 W，and ultrasound temperature 65℃.The total antioxidant capacity of chestnut shell polyphenols is superior to vitamin C.Besides，chestnut shell polyphenols show good scavenging effect on 5 kinds of antioxidant system.Moreover，scavenging effects on DPPH·，ABTS+·，NaNO2，·OH are better than vitamin C within a certain mass concentration.Therefore，chestnut shell polyphenols have a good antioxidant properties as a natural antioxidants.
文章编号：201822012 中图分类号： 文献标志码：
基金项目:湖北省教育厅中青年项目（Q20112906）；湖北省高等学校优秀中青年科技创新团队项目（T201820）
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