选用乙醇溶液作为提取试剂,在单因素试验基础上,采用正交试验确定核桃青皮色素提取最佳工艺参数。研究表明,以乙醇溶液为提取试剂,在乙醇体积分数为30%,提取温度为70℃,提取时间为75min,料液比为1∶14时,色素得率为44.52%。 Ethanol solution was selected as the extraction reagent. On the basis of single factor experiment, orthogonal experiment was used to determine the optimal extraction parameters of walnut peel pigment. The results showed that the yield of pigment was 44.52% with ethanol solution as the extraction reagent in the condition of ethanol volume fraction of 30%, extraction temperature of 70 ℃, extraction time of 75 min and ratio of material to liquid of 1:14.