Extraction Technology on Flavonoids From Corn Silk by Ultrasonic-assisted

With corn silk as material,the flavonoid extracted from corn silk was stuided by ultrasonic extraction,with the alcohol as extracting agent,the alcohol content,material liquid ratio,ultrasonic temperature and ultrasonic time were optimized by single factors and L9(34)orthogonal experiment.The flavone was defined as the amount of extraction.The results showed that the optimal extraction process of flavonoid was material liquid ratio 1∶40g/mL,alcohol solvent 40%,ultrasonic temperature 60℃for 5min,the rate of extraction was 0.301%under this condition.