摘要
微波法提取日照绿茶中茶多酚。以日照绿茶为原料,通过四组单因素实验确定了最佳的溶剂浓度、料液比、微波处理时间和pH值,并做3因素3水平的正交实验;结果:确定最佳组合方案:溶液乙醇浓度为60%,微波处理时间为240s,pH为6.0;通过最佳组合方案得到的茶多酚提取率为14.21%。
The paper introduces the method to extract tea-polyphenols from RiZhao green tea by microwave heating. It is confirmed the best solvent strength, ratio of material and liquid, processing time of microwave, pH value and extracting frequency by four groups single factor experiments. After confirming the best level of each factor by the five experiments, a set of orthogonal experiment which have three factors and three levels attain the best combined condition. Results： The best combined condition is solvent strength 60 %, processing time of microwave 240 s,pH value 6.0; And the ratio of tea-polyphenols from RiZhao green tea is 14.21%.
出处
《食品研究与开发》
CAS
北大核心
2008年第3期81-83,共3页
Food Research and Development
关键词
日照绿茶
茶多酚
微波浸提
RiZhao green tea
tea-polyphenols
extracting by microwave
