小球藻和球等鞭金藻胶体中多糖的醛糖组成  

Aldoses Composition of Polysaccharides in Colloids Produced by Chlorella sp. and Isochrysis galbana

作　　者：郑雪红[1] 郑爱榕[1] 陈祖峰[1] 

机构地区：[1]厦门大学海洋学系亚热带海洋研究所,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2004年第2期225-228,共4页Journal of Xiamen University：Natural Science

基　　金：国家教育部高等学校骨干教师计划基金资助

摘　　要：采用切向超滤技术从微藻培养液浓缩得到胶体,分析其多糖的醛糖组成.结果表明,小球藻与球等鞭金藻胶体的多糖由鼠李糖、L 岩藻糖、D 阿拉伯糖、D(+)木糖、D 甘露糖、葡萄糖和D 半乳糖等7种醛糖组成.D 阿拉伯糖和D 半乳糖占绝对优势,鼠李糖丰度很低.小球藻胶体的L 岩藻糖和葡萄糖是球等鞭金藻胶体的2～3倍,而D(+)木糖和D 甘露糖比球等鞭金藻低27%～32%.本文的结果印证了浮游植物是海洋胶体的生物来源之一.Biogenic colloids produced by Chlorella sp. and Isochrysis galbana were isolated by cross-flow ultrafiltration from alga culture for aldose analysis. The results showed that it consisted of rhamnose, L-fucose, D-arabinose, D(+)xylose, D-mannose, glucose and D-galactose. D-arabinose and D-galactose were overwhelmingly dominant, and rhamnose was on the contrary. The abundance of L-fucose and glucose in Chlorella sp. colloids was as 2～3 times high as that in Isochrysis galbana colloids. However, D(+)xylose and D-mannose was lower by 27%～32%. The results proved phytoplankton was one of the biogenic sources of marine colloids, and biology grazing and microbial mineralization could affect the aldoses composition of colloids.

关 键 词：小球藻 球等鞭金藻 多糖 醛糖 浮游植物 切向超滤技术 海洋胶体 

分 类 号：Q178.53[生物学—水生生物学] Q949.2[生物学—普通生物学]