催化加氢制备乳糖醇条件的优化
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摘要
以乳糖为原料,在催化剂作用下通过高温高压还原加氢制备乳糖醇。在此基础上对试验条件进行优化,得到最佳工艺条件为:乳糖浓度40%,催化剂加量为5%,初始p H7.5,反应温度125℃,反应压力10.0 MPa,反应时间2.5 h时,在此条件下,乳糖醇含量达到96.86%。
Lactitol was hydrogenated using a catalyst,under high pressure and high temperature suitable for hydrogenating lactose. The optimal conditions were:the concentration of lactose was 40 %,catalyst dosage was 5%,initial p H was 7.5,the temperature was 125 ℃,the pressure was 10.0 MPa and the time was 2.5 h,under the above conditions,the content of lactitol reached 96.86 %.
Lactitol was hydrogenated using a catalyst,under high pressure and high temperature suitable for hydrogenating lactose. The optimal conditions were:the concentration of lactose was 40 %,catalyst dosage was 5%,initial p H was 7.5,the temperature was 125 ℃,the pressure was 10.0 MPa and the time was 2.5 h,under the above conditions,the content of lactitol reached 96.86 %.
引文
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[2]曾广植,魏诗泰.甜味和甜味剂的研究[J].食品与发酵工业,1980,11(5):41-48
[3]戴滢.介绍几种新的食品添加剂[J].中国食品添加剂,1996,7(2):18-20
[4]詹豪强.五种糖醇的化学合成[J].淀粉与淀粉糖,1999,26(1):4-8
[5]盛国华.日本乳糖醇产品简况[J].淀粉与淀粉糖,2007,34(3):9-10
[6]戴慧欣,王春秀.雷尼镍催化剂[J].广东有色金属学报,2003,10(10):12-13