Study of the extracellular polysaccharides produced by a blue-green alga, Anabaena flos-aquae A-37

✍ Scribed by Wang, W. S. ;Tischer, R. G.

• Publisher: Springer-Verlag
• Year: 1973
• Weight: 296 KB
• Volume: 91
• Category: Article
• ISSN: 0003-9276
• DOI: 10.1007/bf00409540

✦ Synopsis

Two types of polysaccharides were separated from the extracellular polysaccharide produced by Anabaena flos-aquae A-37 by ion exchange chromatography. The neutral polysaccharide is composed of mainly glucose with minor amounts of xylose in a molar ratio of 8:1. Glucose is believed to constitute the polysaccharide core to which xylose is attached. The acidic polysaccharide is composed of glucose and nronic acid as the major monomers with equal amounts of xylose and ribose as the minor constituents. The molar ratio of the monomers found in the acidic polymer is 6:1 : 1 : 10 as glucose:xylose: ribose: uronie acid. Chemical analyses showed that the extracellular polysaceharide consists of more neutral polymer (62 ~ ) than the acidic polymer {380/0).