超声波辅助提取红枣中黄酮类物质的研究  

Study of Flavonoids Extracted from Jujube by Ultrasonic-assisted Method

作　　者：刘秀敏 单春会[1,2] 张雪 刘娅 LIU Xiu-min;SHAN Chun-hui;ZHANG Xue;LIU Ya(College of Food Science,Shihezi University,Shihezi 832000,Xinjiang,China;Engineering Research Center of Xinjiang Ministry of Education for Fruit and Vegetable Storage and Processing,Shihezi 832000,Xinjiang,China;Key Laboratory of Xinjiang Phytomedicine Resource and Utilization,Ministry of Education,Shihezi 832000,Xinjiang,China)

机构地区：[1]石河子大学食品学院,新疆石河子832000 [2]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 [3]新疆植物药资源利用教育部重点实验室,新疆石河子832000

出　　处：《食品研究与开发》2021年第17期107-113,共7页Food Research and Development

基　　金：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)。

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。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.

关 键 词：红枣 黄酮 低共熔溶剂 超声波辅助法 总还原力 

分 类 号：TS255.3[轻工技术与工程—农产品加工及贮藏工程]