Avances en el diseño de productos probióticos para su aplicación en ranicultura

MARIA ELENA FÁTIMA NADER; SERGIO E. PASTERIS; MARIA CLAUDIA OTERO; MARTA I. BÜHLER

Tafi del Valle. Tucuman

Jornada; XXVI Jornadas Científicas de la Sociedad de Biología de Tucumán; 2009

Sociedad de Biologia de Tucumán

ADVANCES IN THE DESIGN OF PROBIOTIC PRODUCTS FOR THE APPLICATION IN RANICULTURE Nader-Macías ME1, Pasteris SE2, Otero MC2, Bühler MI2 1CERELA - 2INSIBIO-CONICET. Universidad Nacional de Tucumán. Argentina. fnader@cerela.org.ar Lactic Acid Bacteria (LAB) are the dominant microorganisms in many human or animal ecosystems. Those showing beneficial properties can be included in the formulation of probiotic products for the restoration of the indigenous microbiota and prevention of infectious diseases. The objective of our research group is the design or probiotic product for application in raniculture. Based in the specie-specificity exhibited by the indigenous microbiota, the isolation of LAB, Bifidobacterium sp., and spore-forming from different areas of a Rana catesbeiana hatchery and from the environment was performed. The beneficial properties related with the colonization ability together with the production of antagonistic molecules and exopolisaccharides were evaluated. The functional and technological properties were also studied. Some LAB that share some beneficial properties were selected and freeze-dried by using different cryoprotectors. The survival time and the maintenance of their beneficial properties during storage are being evaluated. The results obtained allows to have available some LAB strains, which share some beneficial properties. Further studies are necessary to know if the administration of potentially probiotic strains does not produce adverse effects in animals when administered by different ways (skin or gastrointestinal tract). It should also be evaluated if they are able to prevent infections especially those related with red-leg syndrome.