莫格假丝酵母微胶囊化生产木糖醇的研究  

Study on Xylitol Production by Immobilized Candida mogii in Microcapsules

作　　者：陈宏文[1,2] 许传鹏[3] 张媛[3] 方柏山[3] 胡宗定[1] 

机构地区：[1]天津大学化工学院生化工程系 [2]华侨大学生物工程与技术系,福建泉州362011 [3]华侨大学生物工程与技术系

出　　处：《食品科学》2004年第9期92-95,共4页Food Science

基　　金：国家自然科学基金(20276026);福建省自然科学重点项目基金资助(D0120002)

摘　　要：研究用高压微胶囊成型装置制备莫格假丝酵母NaCS-PDMDAAC微胶囊生产木糖醇。考察了PDMDAAC浓度对微胶囊性能的影响及推进速度、电压、针头内径对微胶囊直径的影响。摇瓶条件下,微胶囊细胞连续发酵9批,粒径2.0mm的微囊得到最大木糖醇浓度为27.6g/L,发酵时间从游离培养的103h缩短为75h,最大生产能力为0.37g/(L·h),比游离细胞提高9.1%。The production of xylitol by Candida mogii in NaCS-PDMDAAC microcapsules prepared in high-voltageelectrostatic field was studied. The influences of PDMDAAC concentration on gel bead characteristics, push speed, type ofpinhead and voltage on microcapsule diameter were investigated. The encapsulated cells were fermented sequentially into 9 batchesin shaking flasks. The Optimum concentration of xylitol was 27.6g/L when the mean diameter of microcapsules was 2.0mm.The optimum xylitol productivity was 0.37g/(L·h), which was increased 9.1% in comparison with free cells.

关 键 词：莫格假丝酵母 微胶囊化 木糖醇 NaCS-PDMDAAC 固定化 

分 类 号：TS245.8[轻工技术与工程—制糖工程]