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Polissacarídeos Extracelulares e atividade enzimática das glicosidases no reservatório de Barra Bonita, SP, Brasil Biota Neotropica
Colombo,Vanessa.
Tipo: Info:eu-repo/semantics/article
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000300026
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Activity of glycosidases from freshwater heterotrophic microorganisms on the degradation of extracellular polysaccharide produced by Anabaena spiroides (Cyanobacteria) BJM
Colombo,Vanessa; Vieira,Armando A.H.; Moraes,Gilberto.
The activity of specific glycosidases during the degradation of the extracellular polysaccharide (EPS) produced by Anabaena spiroides was determined using MUF-substrates (MUF-monosaccharides). Polysaccharide degradation was found to occur in a two-phase process. The first consisted of high enzymatic activity that consumed 41% of the EPS at a relatively high rate, while the second consumed the remaining polysaccharide (59%) at a slower rate. A transition phase from the higher to the slower degradation rates was marked by a replacement of bacterial populations from coccoid to bacillus cells. During the degradation process, the bacterial biomass increased with the decrease of EPS, as revealed by bacterial cell counts. The enzymatic activity detected through...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Anabaena spiroides; Glycosidases; Extracellular polysaccharides; Degradation; Heterotrophic microorganisms.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822004000100018
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