【摘要】 本文介绍了一种生产食品和医药添加剂乳果糖的可行性方法。采用牛乳超滤液作为乳糖来源,蛋壳作为催化剂。这是利用工业废物的一种可供选择的方法。研究了催化剂填料,乳糖浓度以及pH值对乳糖异构化的影响。温度在98℃,采用6mg/ml的催化剂填料,反应60min就可以获得乳果糖的最佳产品。乳果糖的量为1.18g/100ml,通过这种反应条件可以生产出低水平的二级产品(表乳糖,半乳糖以及有机酸)。确定了从65%～92%的乳果糖糖浆中脱除有色副产品的方法。更多还原

【Abstract】 A feasible way to produce lactulose, employing milk ultrafiltrate as source of lactose and egg shell as catalyst, is proposed as an alternative means for utilising these industrial wastes. Influences of catalyst loadings, lactose concentration and pH on lactose isomerisation were studied. Optimal production of lactulose was reached at 98℃, employing 6 mg/ml of catalyst loading within 60 min of reaction. Quantities of lactulose of 1.18 g/100ml and low levels of secondary products (epi-lactose, galactose and organic acids) were produced under these conditions of reaction. Methodology to remove coloured by-products from lactulose syrup in a range of 65%～92% was established.更多还原