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投稿时间:2020-09-11
投稿时间:2020-09-11
中文摘要: 以红枣为原料,以氯化胆碱与尿素构建的低共熔溶剂(deep eutectic solvent,DES)体系为提取剂,采用超声波辅助技术,从中提取具有生物活性的黄酮类物质。通过单因素试验和响应面优化试验,确定提取红枣中黄酮的最佳条件:氯化胆碱与尿素以摩尔比2∶1构建DES体系,加水量45%,红枣与DES的料液比为1∶40(g/mL),在70℃下超声辅助提取44 min,此时黄酮得率达5.79 mg/g。红枣黄酮粗提液具有较高还原力,且随浓度增加而增大。
Abstract:A deep eutectic solvent(DES)system composed of choline chloride and urea was used for the extraction of bioactive flavonoids from jujube.Ultrasonic-assisted technology was used to aid in the extraction process.Using a single-factor experiment and response surface optimization experimental design,the following optimal conditions for extracting flavonoids from jujube were identified:a choline chloride and urea DES system with a molar ratio of 2∶1,adding water to 45%,adding jujube with a DES to solid(liquid/solid)ratio of 1∶40(g/mL),ultrasonic-assisted extraction for 44 min under 70℃.These conditions produced flavonoid yields of up to 5.79 mg/g.The crude extract of jujube flavonoids had higher reducing power that increased with increasing concentration.
keywords: jujube flavonoids deep eutectic solvent ultrasonic assisted method total reduction ability
文章编号:202117018 中图分类号: 文献标志码:
基金项目:新疆生产建设兵团重点领域创新团队建设计划项目(2017CB012);新疆生产建设兵团南疆重点产业创新发展支撑计划项目(2018DB002)
作者 | 单位 |
刘秀敏,单春会,张雪,刘娅 | 石河子大学食品学院,新疆 石河子 832000;新疆特色果蔬贮藏加工教育部工程研究中心,新疆 石河子 832000;新疆植物药资源利用教育部重点实验室,新疆 石河子 832000 |
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