Production and characterization of extracellular carbohydrate polymer from Cyanothece sp CCY 0110

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Rita Mota (Autor) Outra; Rodrigo Guimaraes (Autor) Outra; Zsofia Buettel (Autor) Outra; Federico Rossi (Autor) Outra; Giovanni Colica (Autor) Outra; Carla J Silva (Autor) Outra; Carla Santos (Autor) Outra; Luis Gales (Autor) ICBAS; Andrea Zille (Autor) Outra; Roberto De Philippis (Autor) Outra; Sara B Pereira (Autor) Outra; Paula Tamagnini (Autor) FEUP

Revista

Título: Carbohydrate Polymers

Vol. 92

Páginas: 1408-1415

ISSN: 0144-8617

Editora: Elsevier

Indexação

ISI Web of Knowledge - 88 Citações

Scopus - 102 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-005-302

DOI: 10.1016/j.carbpol.2012.10.070

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8