超声波辅助法提取黑色小麦麸皮花色苷工艺优化

摘要

s:In this paper,the effects of extraction solvent,pH,material–solvent ratio,ultrasonic temperature and extraction time on the extraction yields of anthocyanins from black wheat bran were studied by using ultrasonic–assisted extraction. On the basis of single factor to select parameters of orthogonal experiment to optimize the extraction conditions,the optimum conditions of the extraction were 70%methanol acidified with HCl as the extraction solution and the pH adjusted to 1.0,solid–liquid ratio 1∶15,ultrasonic temperature 60 ℃,ultrasonic time 80 min. Under these conditions,the extraction yields of anthocyanins could amount to 700.35 mg/kg.%该文采用超声波辅助有机溶剂法对黑色小麦麸皮中花色苷进行提取，研究提取溶剂、pH、料液比、超声温度及超声时间对花色苷提取量的影响。在单因素基础上选取参数范围进行正交实验优化提取条件，确定最佳提取工艺：70%盐酸甲醇溶液（pH 1.0）作为提取溶液，料液比1∶15，超声温度60℃，超声时间80 min。在此优化条件下，花色苷的提取量为700.35 mg/kg。