Optimization of microwave-assisted extraction of protopine and allocryptopine from stems of Macleaya cordata (Willd) R. Br. using response surface methodology.
The purpose of the research was to investigate the multiple response optimizations for the extraction of protopine and allocryptopine from the stems of Macleaya cordata (Willd) R. Br. by using microwave-assisted extraction (MAE). A three-level, three-factor Box-Behnken design of response surface methodology was used to develop response model, and desirability function was employed to optimize the effects of main extraction parameters. Three variables, ethanol concentration (20-80%, v/v), extraction temperature (30-70 degrees C) and solvent/solid ratio (10:1 to 30:1, mL/g), were investigated in this study. The results showed that the optimum parameters of MAE were ethanol concentration of 45.2 % (v/v), extraction temperature of 54.7 degrees C and solvent/solid ratio of 20.4:1 (mL/g). Under these conditions, the extraction yields of protopine and allocryptopine were 89.4 and 102.0%, respectively, and the extracta sicca yield was 12.5%. The combination use of response surface methodology, Box-Behnken design and the appropriate desirability function could provide an insight into a lab-scale MAE process, and help to develop procedures for commercial production of active ingredients from medical plants.
School of Chemistry and Chemical Engineering, Central South University, Changsha, P. R. China. zhongming2613@163.com
Ming
M
Zhong
Ke-Long
KL
Huang
Jian-Guo
JG
Zeng
Shuang
S
Li
Jin-Ming
JM
She
Guiyin
G
Li
Li
L
Zhang
D000701:Analgesics, Opioid / Q000737:chemistry / Q000302:isolation & purification*; D053119:Benzophenanthridines / Q000737:chemistry / Q000302:isolation & purification*; D001600:Berberine Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D002851:Chromatography, High Pressure Liquid / Q000295:instrumentation / Q000379:methods; D006863:Hydrogen-Ion Concentration; D008516:Medicine, Chinese Traditional; D008872:Microwaves; D015394:Molecular Structure; D028101:Papaveraceae / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry
D000701:Analgesics, Opioid; D053119:Benzophenanthridines; D001600:Berberine Alkaloids; D012997:Solvents; C109505:allocryptopine; C009093:protopine