Study on the method for extracting anthocyanin pigment from purple plant of new breed of maize

The method for extracting anthocyanin pigment from purple plant of new breed of maize was researched.The optimal conditions to extract the pigment by ethanol was obtained by orthogonal experiment: to adjust acidity to pH 3 by citric,the ratio between material and 80% ethanol solvent was 1∶50,the extracting time was 4h,temperature was 25℃,the average extracting rate was 10% and color value was 4.92.