[Comparison of microwave-assisted and conventional extraction of Corydalis yanhusuo].
OBJECTIVE
To compare the extraction yield and economic cost in the microwave-assisted extraction and conventional extraction of Corydalis yanhusuo.


METHODS
Both of the extractions of Corydalis yanhusuo were optimized by orthogonal design. The contents of tetrahydropalmatine and total alkaloids were determined by HPLC and ultraviolet spectrophotometer, respectively. Meanwhile, the electricity consumption was determined in the extraction process.


RESULTS
Comparing with conventional extraction, the microwave-assisted extraction saved time and money, and provided higher extraction yield of tetrahydropalmatine and total alkaloids.


CONCLUSIONS
The microwave-assisted extraction has advantages in high efficiency and low cost.
Zhu
Gen-Hua
GH
Key Laboratory of Modern Preparation of TCM, JiangXi University of Traditional Chinese Medicine/Ministry of Education, Nanchang 330004, China.
Wang
Guang-Fa
GF
Liang
Xin-Li
XL
Liao
Zheng-Gen
ZG
Zhao
Guo-Wei
GW
Jiang
Qie-Ying
QY
Yang
Ming
M
D000470:Alkaloids / Q000032:analysis / Q000302:isolation & purification; D001600:Berberine Alkaloids / Q000032:analysis / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid; D031311:Corydalis / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D000431:Ethanol / Q000737:chemistry; D008872:Microwaves; D010936:Plant Extracts / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D015203:Reproducibility of Results; D027343:Rhizome / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D013678:Technology, Pharmaceutical / Q000191:economics / Q000379:methods*
D000470:Alkaloids; D001600:Berberine Alkaloids; D004365:Drugs, Chinese Herbal; D010936:Plant Extracts; D012997:Solvents; D000431:Ethanol; C014215:tetrahydropalmatine