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Synthesis and characterization of alginate oligosaccharides produced by Pseudomonas mendocina NK-01 / 生物工程学报
Chinese Journal of Biotechnology ; (12): 1366-1370, 2009.
Artigo em Chinês | WPRIM | ID: wpr-296915
ABSTRACT
In this study, we found that when Pseudomonas mendocina NK-01 accumulated intracellular carbon reserve, medium chain length poly (3-hydroxyalkanoates), it also synthesized extracellular saccharides, alginate oligosaccharides. The high carbon nitrogen ratio of culture medium facilitated alginate oligosaccharides production. We analyzed the structure of alginate oligosaccharide by Ultraviolet-Visible Spectrophotometry, Fourier Transform Infrared Spectroscopy, 1H and 13C of Nuclear Magnetic Resonance, and found that it was compounded in line from beta-D-mannuronic acids and alpha-L-gluronic acids via beta-(1-->4)/ alpha-(1-->4) bonds, which acetylated partly on the 2- and/or 3-hydroxy. In addition, we determined the weight-average molecular weight of alginate oligosaccharides by gel permeation chromatography to be 2054.
Assuntos
Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Oligossacarídeos / Química / Ácido Glucurônico / Pseudomonas mendocina / Alginatos / Genética / Ácidos Hexurônicos / Metabolismo / Peso Molecular Idioma: Chinês Revista: Chinese Journal of Biotechnology Ano de publicação: 2009 Tipo de documento: Artigo

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Texto completo: DisponíveL Índice: WPRIM (Pacífico Ocidental) Assunto principal: Oligossacarídeos / Química / Ácido Glucurônico / Pseudomonas mendocina / Alginatos / Genética / Ácidos Hexurônicos / Metabolismo / Peso Molecular Idioma: Chinês Revista: Chinese Journal of Biotechnology Ano de publicação: 2009 Tipo de documento: Artigo