Optimization of Extraction Technology for Purple Cabbage Pigment by Oorthogonal Design and Antioxidant Activity

Objective:It was to research optimization of extraction technology for purple cabbage pigment and antioxidant activity.Method:On the condition of single factor experiment,the ultrasonic-assisted extraction technology was optimized with orthogonal experiment design,and antioxidant activity was investigated by scavenging capacity DPPH·.Result:The optimal extraction technology for purple cabbage pigment was ratio 25:1(mL,g),pH 1,50 min and 50℃,scavenging capacity to DPPH· could be up to 95%.Conclusion:The optimal extraction technology suit to extract pigment from purple cabbage,and the pigment has strong antioxidant ability.