Free-radical depolymerization with metallic catalysts of an exopolysaccharide produced by a bacterium isolated from a deep-sea hydrothermal vent polychaete annelid

Type Article
Date 2006-06
Language English
Author(s) Petit Anne-Celine1, 2, Noiret N1, Sinquin CorinneORCID2, Ratiskol Jacqueline2, Guezennec Jean2, Colliec-Jouault SylviaORCID2
Affiliation(s) 1 : Ecole Natl Super Chim Rennes, CNRS, UMR 6052, Inst Chim, F-35700 Rennes, France.
2 : IFREMER, Lab Biotechnol & Mol Marines, Dept Valorisat Produits, F-44311 Nantes 3, France.
Source Carbohydrate Polymers (0144-8617) (Elsevier), 2006-06 , Vol. 64 , N. 4 , P. 597-602
DOI 10.1016/j.carbpol.2005.11.016
WOS© Times Cited 20
Keyword(s) Bacterial exopolysaccharide, Free radical depolymerization, H202, Metal
Abstract Free-radical depolymerization with metallic catalysts has been investigated to depolymerize an exopolysaccharide (EPS), with a high molecular weight (> 10(6) g/Mol), produced by the bacterium Alteromonas macleodii subsp. fijiensis biovar deepsane. Three metals (copper, zinc and manganese) were used either alone or mixed. These metals led to the depolymerization of the high molecular weight bacterial polysaccharide with different efficiency. This study specifies some conditions required to produce, with good reproducibility and yield, EPS derivatives of reduced molecular weight ranging from 100,000 to 20,000 g/mol. The more influential parameters are specified. This is a first study to find suitable industrial conditions in the presence of these metallic catalysts. (c) 2005 Elsevier Ltd. All rights reserved.
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Petit Anne-Celine, Noiret N, Sinquin Corinne, Ratiskol Jacqueline, Guezennec Jean, Colliec-Jouault Sylvia (2006). Free-radical depolymerization with metallic catalysts of an exopolysaccharide produced by a bacterium isolated from a deep-sea hydrothermal vent polychaete annelid. Carbohydrate Polymers, 64(4), 597-602. Publisher's official version : https://doi.org/10.1016/j.carbpol.2005.11.016 , Open Access version : https://archimer.ifremer.fr/doc/00000/2146/