机构地区: 华南理工大学食品与生物工程学院
出 处: 《冷饮与速冻食品工业》 2002年第3期7-9,16,共4页
摘 要: 蔗糖 6 乙酸酯 (S 6 a)的制备是双酶 化学联合法合成三氯蔗糖的关键步骤。以葡萄糖为原料 ,经枯草杆菌megaterium发酵生成葡萄糖 6 乙酸酯 (G 6 a) ,再通过果糖基转移酶将蔗糖分子的果糖基转移至G 6 a上 ,即得到专一的S 6 a。详细讨论了G 6 a的发酵过程及S 6 a的酶法合成过程 ,并指出此法的优缺点。 The synthesis of sucrose 6 acetate (S 6 a) is the key step in the synthesis of sucralose through di enzymatic chemico method. Glucose is fermented to glucose 6 acetate (G 6 a) by Bacillus megaterium . Then fructose is transferred to G 6 a by fructosyl transferase,in which S 6 a is the unique product. The processes of G 6 a fermentation and S 6 a enzymatic synthesis were discussed in detail. The advantages and disadvantages of the method were also pointed out.