Study on the extraction process of Yushenhua beverage
To optimize the extraction process of Yushenhua beverage(YSH),the multi-indicator weighted scores of total polysaccharides,lobetyolin and chlorogenic acid content were used as the evaluation index.The polysaccharides content was determined by the phenol-sulfuric acid method.The content of lobetyolin and chlorogenic acid was determined by high-performance liquid chromatography method.Based on the one-factor test,the soaking time,material-to-liquid ratio,and extraction time of YSH raw materials were optimized by Box-Behnken response surface methodology.The optimal extraction process of YSH was determined as follows:soaking time of 15 minutes,material-to-liquid ratio of 1∶14 g/mL and 1∶12 g/mL,and extraction time of 60 minutes and 40 minutes.The preferred extraction process of YSH beverage was found to be reasonable and feasible under these conditions.
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