[Study on water extraction process of Herba epimedii with microwave technology].
OBJECTIVE
To study, the high polar media-water extraction process of Herba epimedii with the microwave technology.


METHODS
The single parameters of extraction process was investigated with dry extract yield and extraction efficiency of icariin as content index.


RESULTS
Through studying the single parameter, the optimal conditions are as follows: 70% ethanol as wetting solvent, volume of solvent to weight of material equal to 6:1 in wetting, 30 min wetting time, 2.5 min microwave irradiation time, volume of solvent to weight of material equal to 50:1 in extraction process, 10 min microwave-assisted extraction time.


CONCLUSIONS
Compared with conventional methods, microwave-assisted extraction (MAE) after Microwave Pretreament (MP) of raw material was higher extraction efficiency and time-saving.
Huang
Rui-hua
RH
Chemical Engineering Research Center, Shanghai 200237, China.
Zhou
Yong-chuan
YC
Han
Wei
W
Deng
Xiu
X
D004365:Drugs, Chinese Herbal / Q000032:analysis / Q000302:isolation & purification*; D034181:Epimedium / Q000737:chemistry*; D005419:Flavonoids / Q000032:analysis / Q000302:isolation & purification*; D008872:Microwaves; D010946:Plants, Medicinal / Q000737:chemistry*; D012997:Solvents; D013678:Technology, Pharmaceutical / Q000379:methods
D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D012997:Solvents; C056599:icariin