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Effects of lactic acid bacteria cultures on pathogenic microbiota from fish

AutorVázquez, José Antonio ; González Fernández, Pilar ; Murado García, Miguel Anxo
Palabras claveLactic acid bacteria
Dose-response models
Organic acids
Pathogenic microbiota
Fecha de publicación2005
EditorElsevier
CitaciónAquaculture 245(1-4): 149-161 (2005)
ResumenThe concrete nature of the probiotic effects which the presence of micro-organisms (especially lactic acid bacteria: LAB) exercise on larval cultures of fish is not well defined, being attributable to different factors or action mechanisms. In fact, the production of diverse antibacterial metabolites (bacteriocins in particular) by many LAB forms may constitute the basis of these probiotic effects, as is repeatedly described in literature. Accordingly, the inhibition of pathogenic species in fish by extracts of LAB constitutes a rapid method for detecting potential probiotics. By studying the response of four common pathogens of turbot (Scophthalmus maximus) to nine potential probiotics, the diversity and mechanisms of effectors in the probiotics were shown to present complex dose–response and non-treatable profiles with conventional models. Proposed modifications allow satisfactory fits and the calculation of useful parameters in the comparison of activities. The results showed that lactic and acetic acids, and not the bacteriocins, are responsible for the effects (inhibitory or stimulatory depending on the concentrations considered) in all the cases studied.
Descripción13 páginas, 9 figuras, 4 tablas, 1 apéndice
Versión del editorhttp://dx.doi.org/10.1016/j.aquaculture.2004.12.008
URIhttp://hdl.handle.net/10261/51206
DOI10.1016/j.aquaculture.2004.12.008
ISSN0044-8486
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