Optimization of ultrasonic-assisted ethanol extraction of polyphenols from Phyllanthus emblica by response surface methodology

摘要

Polyphenols are indispensable as the main antioxidant substances of Phyllanthus emblica. In this study, ultrasonic-assisted extraction of emblic leafflower fruit polyphenol was performed with ethanol, and a response surface method was used to optimize the extraction results and determine parameters for the best conditions. These parameters included a drying temperature of 80 degrees C emblic leafflower fruit pulp, 60% alcohol concentration, solid-liquid ratio, ultrasonic extraction time of 24 min and ultrasound temperature of 45 degrees C. Under the experimental conditions, the yield of polyphenols obtained from P. emballiae was 10.40%, which was almost the same as the ideal prediction value (10.39%). The established regression model shows a good fitting degree.

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