||Petit Anne-Celine1, 2, Noiret N1, Sinquin Corinne2, Ratiskol Jacqueline2, Guezennec Jean2, Colliec-Jouault Sylvia2
||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.
||Carbohydrate Polymers (0144-8617) (Elsevier), 2006-06 , Vol. 64 , N. 4 , P. 597-602
|WOS© Times Cited
||Bacterial exopolysaccharide, Free radical depolymerization, H202, Metal
||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.