葡萄糖固定床柱异构工艺制备甘露醇  

Study on mannitol preparation from glucose by fixed bed column isomerization

作　　者：张伟 章朝晖[2] 梁光兴[2] 梁武[2] 

机构地区：[1]南宁市节能监察中心,南宁530028 [2]南宁市化工研究设计院,南宁530031

出　　处：《中国食品添加剂》2017年第6期144-150,共7页China Food Additives

摘　　要：以葡萄糖为原料经过单柱固定床树脂为催化剂化学异构后,再经过离交、加氢、离交、浓缩、结晶、固液分离、干燥,可得到较高收率的甘露醇产品。利用单因素结合正交试验,确定的优化条件为:反应温度96.0℃、糖液流速0.4BV/h、反应液p H 2.0、糖液浓度50%,所得到的甘露糖含量为30.17%,经过加氢后可得到甘露醇含量达30.3%的混醇液。本文所开发的D296单柱固体床树脂为催化剂的工艺,具有连续进出料反应、钼含量低、有效降低后续离交的压力、甘露糖含量较高的优点,非常适合工业生产上采用。Study on the preparation of mannitol from glucose with single-column fixed bed resin catalyst process was carried out. With glucose as raw material, after fixed bed column Isomerization process, ion-exchange, hydrogenation, ion-exchange, concentration crystallization, solid-liquid separation and drying, high yield of mannitol could been gained. Using single factor combined with orthogonal test, the optimal conditions were determined as follows ： reaction temperature 96.0 ℃, sugar fluid velocity 0.4 BV/h, reaction liquid pH 2.0, sugar liquid concentration 50%; the resulting mannose content is 30.17%, and 30.3% mannitol content can be obtained after hydrogenation in mixed alcohol liquid. In this paper, the developed single-column fixed bed process with D296 resin as catalyst, is very suitable for industrial application, having advantages as ： continuous feed ＆ discharging reaction, low content of molybdenum in the sugar liquid, effectively to reduce the stress of the subsequent ion-exchange, and high mannose content in the isomerization products.

关 键 词：葡萄糖 甘露醇 异构 制备 催化剂 

分 类 号：TS236.3[轻工技术与工程—粮食、油脂及植物蛋白工程] TS202.3[轻工技术与工程—食品科学与工程]