水热法提取龙井长叶中茶多糖工艺优化研究  

Optimization of Extraction Technology of Polysaccharides by Hydrothermal Method from Longjing-changye(Camellia sinensis)

作　　者：周宇波 李霞飞 高岳芳[1] 肖斌[1] 杨亚军[1,2] 

机构地区：[1]西北农林科技大学园艺学院,陕西杨陵712100 [2]中国农业科学院茶叶研究所,浙江杭州310000

出　　处：《西北林学院学报》2018年第1期207-210,240,共5页Journal of Northwest Forestry University

基　　金：中央高校基本科研业务费(Z109021424);陕西省农业科技创新与攻关(2016NY-013)

摘　　要：使用水热法对茶多糖进行提取,以期为茶多糖的提取提供新的思路。以龙井长叶茶树叶片为材料,研究提取时间、提取温度、固液比对茶多糖得率的影响,以正交试验优化提取工艺。结果表明,影响茶多糖得率各因素的主次顺序是提取温度>固液比>提取时间,最佳提取工艺参数为提取温度120℃,提取时间90min,固液比为1∶25(g·mL^(-1)),此工艺条件下龙井长叶中茶多糖得率为110.23mg·g^(-1)。Hydrothermal method was used for the extraction of tea polysaccharides from Longjing-changye leaves. Effects of extraction time, temperature, and solid/water ratio on the yields of tea polysaccharides were studied. The orthogonal experiment was designed to optimize the extraction conditions. The results showed that the order of the factors affecting the extraction was temperature〉 time〉 solid/liquid ratio. The optimum yield of tea polysaccharides was 110.23 mg g-1 at 120℃ with solid/solvent ratio 1 ： 25（g mL-1） for 90 min.

关 键 词：水热法 茶多糖 提取 工艺优化 龙井长叶 

分 类 号：S571.1[农业科学—茶叶生产加工]