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投稿时间:2014-12-11
投稿时间:2014-12-11
中文摘要: 通过单因素试验优化超声波辅助提取藜麦多酚的工艺研究,并对藜麦多酚提取液的活性、对自由基和亚硝酸 根的清除作用进行研究。结果表明:藜麦多酚的最佳提取工艺为 70 %乙醇做溶剂、料液比 1 ∶ 25(g/mL)、超声温度为
50 ℃、以 320 W 功率超声波辅助提取 20 min,藜麦多酚的得率为 0.215 %,藜麦多酚提取液对亚硝酸根离子的清除能力 达到 88.4 %,对羟自由基的清除能力达到 90.4 %,对 DPPH·的清除率为 84.3 %。
Abstract:The ultrasonic-assisted extraction process for polyphenols from the quinoa was performed using sin- gle factor experiments,The antioxidant capability , scavenging capability for NO2- and free radicals were inves- tigated with the extracts of quinoa .The results showed that the optimum extraction condition were:extraction solvent of 70 % ethanol,the radio of materials to liquid 1 ∶ 25 (g/mL),temperature of 50 ℃, time of 20 min, power of 320 W. The yield of quinoa polyphenols was 0.215 % ;and the scavenging rate to NO2-,OH· and DPPH·were 88.4 %, 90.4 %and 84.3 %, respectively ,with polyphenols extraction of quinoa.
文章编号:201606016 中图分类号: 文献标志码:A
基金项目:忻州师范学院应用化学创新实践基地(院政字 201331);忻州师范学院重点研究项目(20121105)
Author Name | Affiliation |
WANG Gui-lin, DONG Jing, GONG Zhi-hua, LI Zhi-ying* | Department of Chemistry, Xinzhou Teachers University, Xinzhou 034000, Shanxi, China |
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