【摘要】 本文以低温脱脂大豆粕为原料 ,比较了多种溶剂对大豆低聚糖的浸提效果 ,确定较优的浸取条件为 :1 %Na2 CO3,温度 55℃ ,时间 2h .经碱溶酸沉后的乳清液 ,采用超滤法除残留蛋白 ,通过正交实验确定的纯化条件为 :温度 2 5℃ ,pH值 6 3,膜压力 2 0psi.离子交换脱盐后 ,经真空减压浓缩得到产品更多还原

【Abstract】 Extraction effect of soybean oligosacchride in various solvents was compared using cooled defatted soybean meals as raw material.The better conditions were:1%Na 2CO 3,extraction temperature 55℃ and extraction time 2 hours.After being dissolved by alkali then being precipitated by acid,remaining protein was removed by Ultrafiltration(UF) and through orthogonal tests.The optimum condition was:25℃,pH6.3,and membrane prssure 20 psi.The product was obtained by concentrated under vacuum after desalting by ion exchange.更多还原