微波辅助提取墨旱莲总黄酮的工艺优化  

Microwave-assisted extraction of total flavonoids from eclipta alba

作　　者：孙晓海[1] 郑媛虹[1] 胡雪[1] 顾晓栋[1] 韩伟[1] 

机构地区：[1]华东理工大学中药现代化工程中心,上海200237

出　　处：《南京工业大学学报（自然科学版）》2011年第2期70-73,共4页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(20006003);国家大学生创新性实验计划资助项目(081025107)

摘　　要：采用微波辅助提取墨旱莲中的总黄酮。以总黄酮得率为指标,考察微波辐射时间、液固比、溶剂pH、提取级数等因素对得率的影响,确定了总黄酮的最佳提取工艺条件:以去离子水为溶剂,液固比(V/m)=25 mL/g,微波提取210 s,提取2次,此时墨旱莲总黄酮得率为1.42%,而常规水提取的时间为60 min,得率1.24%,故微波辅助提取法高效,省时。A novel microwave-assisted extraction（MAE） was used for extraction of total flavonoids from eclipta alba.The effects on extraction of total flavonoids,such as MAE time,liquid/solid ratio,pH of solution and extraction stages,were discussed.The optimum extracting parameters of total flavonoids were as follows： deionized water as solvent,liquid and solid ratio of 25 mL/g,MAE time of 210 s,and extraction stages of 2.With the optimization of extracting factors,the extraction percentage in MAE was 1.42%.Compared with water extraction percentage 1.24% and extraction time 60 min,MAE with less extraction time was more efficient.

关 键 词：微波提取 墨旱莲 总黄酮 

分 类 号：R284.2[医药卫生—中药学]