Optimization of alcohol extraction of Yinxing Yangnao formula by G1-entropy weight method combined with Box-Behnken response surface methodology
Objective To optimize the alcohol extraction of Yinxing Yangnao formula.Methods Based on the single factor experiments,ethanol concentration,extraction time and times of extraction solvent were used as the influence factors.Box-Behnken response surface methodology was used,and the transfer rates of ferulic acid,3,6'-disinapoyl sucrose,sciadopitysin,isoginkgetin and extract yield as evaluation indexes.Combined with G1-entropy weight method,the comprehensive score was calculated to optimize the alcohol extraction of Yinxing Yangnao formula.Results The model predicted that the optimal extraction process was extraction with 6 times of 60%ethanol for 1.4 h and 2 extractions.Conclusion The extraction method is stable and feasible,which can provide a theoretical basis for the mass production of Yinxing Yangnao formula.