摘要
Microwave assisted-semi bionic extraction (MASBE) process for lignans from Fructus Forsythiae was studied. The influences of solvent pH value, microwave power, dosage of solvent and irradiation time were investigated. Optimum extracting parameters were determined by orthogonal experiments as follows: pH value of solvent at first extraction is 5.5-6.0, that at the second extraction is 7-8; microwave power is 700 W; mass ratio of Fructus Forsythiae to water is 1-12; irradiation time is 10 min, and extracting times is two. Under these optimal conditions, the yield of lignans reaches 0.364%. Compared with the conventional extraction methods, the MASBE process has the advantages of high extraction rate, high extraction selectivity.
Microwave assisted-semi bionic extraction （MASBE） process for lignans from Fructus Forsythiae was studied. The influences of solvent pH value, microwave power, dosage of solvent and irradiation time were investigated. Optimum extracting parameters were determined by orthogonal experiments as follows： pH value of solvent at first extraction is 5.5-6.0, that at the second extraction is 7-8; microwave power is 700 W, mass ratio ofFructus Forsythiae to water is 1：12; irradiation time is 10 min, and extracting times is two. Under these optimal conditions, the yield of lignans reaches 0.364%. Compared with the conventional extraction methods, the MASBE process has the advantages of high extraction rate, high extraction selectivity.
基金
Project(06SK3042) supported by the Science and Technology Commission Foundation of Hunan Province, China
关键词
连翘
木脂素
微波辅助生物萃取
正交设计
lignans
Fructus Forsythiae
microwave assisted-semi bionic extraction
orthogonal test
