竹叶中活性茶多酚成分的提取研究  

Study on Extraction of Active Tea-Polyphenols in Bamboo Leaf

作　　者：韩立路[1] 王文渊[1] 黄光文[2] 张芸兰[1] 蒋小玲 

机构地区：[1]湖南永州职业技术学院,湖南永州425006 [2]湖南科技学院可再生资源研究所,湖南永州425007 [3]湖南恒伟药业有限公司,湖南永州425000

出　　处：《食品研究与开发》2011年第9期82-84,112,共4页Food Research and Development

基　　金：湖南省教育厅资助项目(项目号:09C1294)

摘　　要：探讨用超声技术从竹叶中提取茶多酚的最优工艺条件。以茶多酚的产率为考察指标,在单因素试验的基础上,固定超声功率为70 W,采用L9(34)正交试验来确定浸提温度、超声时间、料液比、乙醇体积分数四个因素的最佳组合。结果表明,在超声功率为70 W的前提下,从竹叶中超声提取茶多酚的适宜工艺条件为:浸提温度75℃,超声时间40 min,料液比1∶20(g/mL),乙醇体积分数75%,此条件下茶多酚提取产率为0.624 3%。该提取工艺稳定可靠、环保,具有使用价值。To identify the optimal process conditions of extracting tea-polyphenols from bamboo leaf by ultrasonic technology.Tea polyphenols yield as the indexes,Fixed ultrasound power 70 W,based on the single-factor test,the L9（34） orthogonal test was used to determine the best combination conditions of four factors,which including extracting temperature,extracting time,ratio of solid to liquid and ethanol concentration.The results indicated that ultrasonic power was 70 W,extracting temperature was 75 ℃,extracting time was 40 min,ratio of solid to liquid was 1/20（g/mL） and ethanol concentration was 75 %.Under these conditions,the extraction yield of tea-polyphenols was 0.624 3 %.The process is stable,reliable,environmental and valuable.

关 键 词：茶多酚 超声波 正交试验 

分 类 号：TQ461[化学工程—制药化工]