Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/25258

TitleProduction and characterization of extracellular carbohydrate polymer from Cyanothece sp. CCY 0110
Author(s)Mota, Rita
Guimarães, Rodrigo
Büttel, Zsófia
Rossi, Federico
Colica, Giovanni
Silva, Carla J. S. M.
Santos, Carla
Gales, Luís
Zille, Andrea
Philippis, Roberto De
Pereira, Sara B.
Tamagnini, Paula
KeywordsCyanobacteria
Cyanothece
Extracellular polymeric substances (EPS)
Released polysaccharides (RPS)
Issue date2012
PublisherElsevier
JournalCarbohydrate Polymers
Abstract(s)Cyanobacterial extracellular polymeric substances (EPS) are heteropolysaccharides that possess characteristics suitable for industrial applications, notably a high number of different monomers, strong anionic nature and high hydrophobicity. However, systematic studies that unveil the conditions influencing EPS synthesis and/or its characteristics are mandatory. In this work, Cyanothece sp. CCY 0110 was used as model organism. Our results revealed that this strain is among the most efficient EPS producers, and that the amount of RPS (released polysaccharides) is mainly related to the number of cells, rather than to the amount produced by each cell. Light was the key parameter, with high light intensity enhancing significantly RPS production (reaching 1.8 g L−1), especially in the presence of combined nitrogen. The data showed that RPS are composed by nine different monosaccharides (including two uronic acids), the presence of sulfate groups and peptides, and that the polymer is remarkably thermostable and amorphous in nature.
TypeArticle
URIhttp://hdl.handle.net/1822/25258
ISSN0144-8617
Other identifiers01448617
Publisher versionhttp://ac.els-cdn.com/S0144861712010983/1-s2.0-S0144861712010983-main.pdf?_tid=9843a4be-24fd-11e3-bc59-00000aacb35f&acdnat=1380015915_4854def313652134abe0a96b8bb57d09
Peer-Reviewedyes
AccessOpen access
Appears in Collections:DET/2C2T - Artigos em revistas internacionais com arbitragem científica

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