A Study on the Extraction Process and Determination of Anthocyandin in Purple Sweet Potato

This study is to optimize the extraction process and determination of anthocyandin in purple sweet potato with microwave radiation.The optimum extraction process was determined with the single factor experiments,and two determination methods were compared through error analysis.It is concluded that the optimum extraction conditions were:the ratio of liquid to solid was 20:1,the concentration of hydrochloric acid was 0.5%,the microwave power was 700w,the temperature was 70℃,and the time was 6min;the pH differential method had higher accuracy and stability than the single pH method.