摘要
为了探索不同干燥方式、贮藏时间对刺梨黄酮含量及其抑菌活性的影响,采用冷冻干燥、阴干、恒温鼓风烘烤3种方式干燥新鲜刺梨果实,并对其黄酮进行分离提取及含量测定,进一步研究此黄酮提取液对大肠杆菌和金黄色葡萄球菌抑菌活性的影响。结果表明:3种干燥方式处理后的刺梨黄酮含量具有显著差异,冷冻干燥有利于刺梨黄酮含量和抑菌成分的保留,其黄酮含量最高达1.998%,其次是恒温鼓风烘烤和阴干,黄酮含量分别为1.572%和1.330%;低温贮藏试验显示随着贮藏时间的延长,刺梨黄酮含量和抑菌活性逐渐降低,鲜果低温贮藏10 d以上将影响其品质。
The aim of present work was to study the different drying methods,different storage times on the influence of the content of total flavone in the fruits of Ross roxburghii Tratt and its antibacterial activity. Freeze drying,dry in the shade and constant temperature air blast baking technologies on the fresh fruits of Ross roxburghii Tratt were studied. Results showed that there was siginificant difference among three drying methods in the content of total flavone,and the freeze drying method was beneficial to the total flavone and antibacterial components,with the content of flavone 1.998 %,followed by constant temperature air blast baking and dry in the shade,being the content of flavone 1.572 % and 1.330 %,respectively. The results of low temperature storage experiments suggested that the content of total flavone and antibacterial activity reduced gradually with the extension of storage time,and the quality of Ross roxburghii Tratt will be deteriorated if the time in cold storage beyond 10 days.
出处
《食品研究与开发》
CAS
北大核心
2016年第5期1-1,2-4,共4页
Food Research and Development
基金
国家自然基金(31401319)
山西省青年科技研究基金(2015021146)
山西省高校优秀青年学术带头人支持计划(20151006)
山西省大学生创新创业训练项目(S2015286)
太原科技大学博士启动基金项目(HY201301)
关键词
刺梨
黄酮
抑菌活性
干燥方式
贮藏
影响
Ross roxburghii Tratt
total flavone
antibacterial activity
different drying methods
storage
influence
