Study on the optimal extraction condition of the anthocyanins of purple potato

The experiment purpose is to obtain the best extraction process of purple sweet potato anthocyanins.In the study,extraction of anthocyanins from purple sweet potato is by extraction method.Under the condition of single factor experiment,through L9(34)orthogonal test to 4 factors(extracting agent ratio of acid to alcohol,solid-liquid ratio,and extraction temperature,extraction time) to get the best extraction condition,and give ultrasonic treatment.The result shows that the optimal condition of purple sweet potato anthocyanins for extraction is extracting agent hydrochloric acid to ethanol ratio 2:3,material to liquid ratio 1:5(g / ml),extraction temperature of 60 degrees Celsius,extraction time of 40 minutes,and ultrasonic treatment can improve anthocyanin extraction efficiency.From the above,the conclusion can be drawn that this study can determine the optimum extraction process of anthocyanins from purple sweet potato.