马尾藻多糖的膜分离纯化  

Separation of Polysaccharides from Sargassum pallidum by Membrane Technology

作　　者：叶红[1] 周春宏[2] 曾晓雄[1] 孙怡[1] 黄晨聪[1] 

机构地区：[1]南京农业大学食品科技学院,南京210095 [2]江苏省环境监测中心,南京210036

出　　处：《湖北农业科学》2011年第2期375-377,共3页Hubei Agricultural Sciences

基　　金：南京农业大学青年科技创新基金项目(Y200415)

摘　　要：对膜分离技术分级分离马尾藻多糖提取液进行了研究,比较了不同料液比及操作压力对多糖分级分离的影响,结果表明,多糖主要包含在分子量大于50kD的截流液中;随着料液比的减小,膜分离后的多糖损失减少,确定最佳料液比为1∶150(W/V,g∶mL);操作压力对多糖损失无显著影响,在设备允许压力范围内,0.1～0.5MPa都适合。Fractionation of polysaccharides extracted from Sargassum pallidum by membrane technology has been studied.The effects of solid-liquid ratio and operating pressure on fractionation of polysaccharides were investigated.The results showed that S.pallidum polysaccharides were mainly included in the fractions whose molecular weight was bigger than 50 kD.A higher solid-liquid ratio would lead to less loss of polysaccharides in membrane separation.It was considered suitable to dilute the solution at the ratio of 1∶150（W/V,g∶mL）before membrane separation.The operating pressure had no significant effect on polysaccharides loss.So the pressure of 0.1～0.5MPa was suitable as long as it was in the allowable scope of membrane separation equipment.

关 键 词：马尾藻 多糖 膜分离 

分 类 号：S985.49[农业科学—捕捞与储运] R284.2[农业科学—水产科学]