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Article Dans Une Revue Ultrasonics Sonochemistry Année : 2007

Ultrasonic depolymerization of an exopolysaccharide produced by a bacterium isolated from a deep-sea hydrothermal vent polychaete annelid

Résumé

Low frequency ultrasound was used to depolymerize a high-molecular-weight exopolysaccharide (EPS) produced by a deep-sea hydrothermal bacterium Alteromonas macleodii subsp. fijiensis biovar deepsane. The influence of several parameters was examined including the duration of ultrasonic irradiation, EPS concentration, reaction temperature and volume of the sonicated solution. With the aim of optimizing the depolymerization, the native EPS was simultaneously treated with hydrogen peroxide and ultrasound. This study identified the sonication conditions that produce low-molecular-weight derivatives from the native EPS (>106 Da) with good reproducibility.

Domaines

Matériaux

Dates et versions

hal-00333835 , version 1 (24-10-2008)

Identifiants

Citer

Anne-Cécile Petit, Nicolas Noiret, Jean Guezennec, Nicolas Gondrexon, Sophie Colliec-Jouault. Ultrasonic depolymerization of an exopolysaccharide produced by a bacterium isolated from a deep-sea hydrothermal vent polychaete annelid. Ultrasonics Sonochemistry, 2007, 14 (2), pp. 107-112. ⟨10.1016/j.ultsonch.2006.03.010⟩. ⟨hal-00333835⟩
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