超滤法分离棉籽粕水提液中的棉籽低聚糖  

Purification of oligosaccharides from cotton seed meal water extracts by ultrafiltration

作　　者：宿曼[1] 杨瑞金[1] 许琪 华霄[3] 张文斌[3] 赵伟[3] 

机构地区：[1]江南大学食品科学与技术国家重点实验室,江苏无锡214122 [2]云南省中小企业服务中心,云南昆明650000 [3]江南大学食品学院,江苏无锡214122

出　　处：《食品与发酵工业》2014年第2期232-235,共4页Food and Fermentation Industries

摘　　要：采用超滤工艺脱除棉籽粕水提取液中的蛋白质、胶质、色素等大分子杂质。通过比较不同截留分子质量、操作压力、温度下超滤膜的超滤效果,优化确定膜的最佳截留分子质量、操作压力和温度分别为5 kDa、1.379×105Pa和35℃。在此工艺条件下,棉籽粕水提液中总糖、棉籽糖、水苏糖、蔗糖的透过率分别达到88.7%、86.3%、87.2%和98.1%,蛋白质脱除率达到75%。超滤工艺是分离纯化棉籽粕水提液的有效手段。Extraction of oligosaccharides from cottonseed meal was carried out by water. Macromolecular impuri- ties in extracts, such as protein, pectin, pigment, were removed by the ultrafihration. Based on the effect of MWCO （molecular weight cut offs） , the optimum parameters were 5 kDa MWCO, 20 psi and 35 ℃. The transmittance of to- tal sugar, raffinose, stachyose and sucrose was 88.7% , 86.3% , 87.2% and 98.1% , respectively. The protein re- moval rate was 75%. The conclusion is that uhrafihration is efficient in purification of oligosaccharides from cotton seed meal water extracts.

关 键 词：棉籽低聚糖 超滤 分离纯化 

分 类 号：TS229[轻工技术与工程—粮食、油脂及植物蛋白工程] TQ028.8[轻工技术与工程—食品科学与工程]