Abstract
JM-101 is a developed functional food formula using water extract of Chaenomeles sinensis and Phyllostachys bambusoides for anti-obesity. Standardization and quality control of herb mixture is more difficult than those of single herb. Additionally, the estimation of mixing ratio is an essential requirement for standardization. This study aimed to develop an efficient analytical method for the standardization of JM-101 based on C. sinensis and P. bambusoides. Protocatechuic acid and p-coumaric acid were selected as marker compounds of JM-101. A mixture of the two medicinal materials (1:1 w/w) was extracted by water and then liquid-liquid extracted (LLE) by ethyl acetate. The supernatant was evaporated to dryness and dissolved in methanol for analysis. The extraction time, material-to-water ratio and ethyl acetate-to-water ratio were optimized by multi-response optimization based on response surface methodology (RSM). The established methods were validated in terms of linearity, precision, accuracy, repeatability, stability and recovery. The novel method based on LLE and RSM provides a sensitive, accurate analysis and excellent extraction efficiency of marker compounds in JM-101, without interruption of other compounds in JM-101. In conclusion, the developed simultaneous analytical method contributes to the standardization of two materials (C. sinensis and P. bambusoides) and JM-101.
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