Literature DB >> 24500483

Effects of light intensity on components and topographical structures of extracellular polysaccharides from the cyanobacteria Nostoc sp.

Hongmei Ge1, Ling Xia, Xuping Zhou, Delu Zhang, Chunxiang Hu.   

Abstract

A study on the effects of light intensity (40 and 80 μE/m(2)/sec) on the components and topographical structures of extracellular polysaccharides (EPS) was carried out in cyanobacteria Nostoc sp.. EPS yield increased with light intensity. However, light intensity did not significantly affect the EPS fractions and monosaccharide composition. Higher light intensity generally resulted in higher protein content of EPS in similar fractions. The topographical structure of EPS, investigated by atomic force microscopy, appeared as spherical lumps, chains and networks. The long chains were observed at higher light intensity. Thus, light intensity affected the yield and nature of EPS.

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Year:  2014        PMID： 24500483     DOI： 10.1007/s12275-014-2720-5

Source DB:  PubMed          Journal:  J Microbiol        ISSN： 1225-8873            Impact factor:   3.422


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