Abstract

COSTA, Renata Albuquerque; AMORIM, Ludimila M. M. Conde; ARAUJO, Rayza Lima  and  VIEIRA, Regine H. Silva dos Fernandes. Multiple enzymatic profiles of Vibrio parahaemolyticus strains isolated from oysters. Rev. argent. microbiol. [online]. 2013, vol.45, n.4, pp.267-270. ISSN 1851-7617.

The enzymatic characterization of vibrios has been used as a virulence indicator of sanitary interest. The objective of this study was to determine the enzymatic profile of Vibrio parahaemolyticus strains (n = 70) isolated from Crassostrea rhizophorae oysters. The strains were examined for the presence of gelatinase (GEL), caseinase (CAS), elastase (ELAS), phospholipase (PHOS), lipase (LIP), amilase (AML) and DNase. All enzymes, except elastase, were detected in more than 60% of the strains. The most recurrent enzymatic profiles were AML + DNase + PHOS + GEL + LIP (n = 16; 22.9%) and AML + CAS + DNase + PHOS + GEL + LIP (n = 21; 30%). Considering the fact that exoenzyme production by vibrios is closely related to virulence, one must be aware of the bacteriological risk posed to human health by the consumption of raw or undercooked oysters.

Keywords : Vibrio parahaemolyticus; Exoenzymes; Bivalves; Brazil.

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