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Method for the differentiation and quantification of lactic bacteria and bifidobacteria in fermented milks, using selective antibiotic-free culture media

Authors: Tabasco, Raquel; Paarup, Torsten; Janer Otero, Carolina; Peláez, Carmen; Requena, Teresa;

Method for the differentiation and quantification of lactic bacteria and bifidobacteria in fermented milks, using selective antibiotic-free culture media

Abstract

El la invención se refiere a un método para la diferenciación y la cuantificación de bacterias lácticas y bifidobacteria en leches fermentadas, usando medio de cultivo antibiótico-libre selectivo. El bote del método sea utilizado para la cuantificación diferencial y selectiva de cuatro especies de las bacterias lácticas (S. thermophilus, L. bulgaricus, L. casei, L. acidophilus) y B. lactis en los cultivos mixtos presentes en leches fermentadas. La invención es nueva y competitivo ventajosa en que él bote distingue y cuantifica confiablemente y simultáneamente tres diferentes especies de Lactobacillus en lo referente a una otra y a las distintas bacterias lácticas, tal asno. thermophilus, y bifidobacteria presente en mezclas en leches fermentadas industriales. La especificidad del medio y las diferentes condiciones de la incubación posibilitan las colonias que se diferenciarán sin la adición de antibióticos que el bote afecte a crecimiento y, por lo tanto, a la cuantificación. El método se ha validado en base de especificidad, de reproducibilidad, de la recuperación de la población ensayada y de la competición de los interspecies.

The invention relates to a method for the differentiation and quantification of lactic bacteria and bifidobacteria in fermented milks, using selective antibiotic-free culture media. The method can be used for the differential and selective quantification of four species of lactic bacteria (S. thermophilus, L. bulgaricus, L. casei, L. acidophilus) and B. lactis in mixed cultures present in fermented milks. The invention is novel and competitively advantageous in that it can reliably and simultaneously distinguish and quantify three different species of lactobacilli in relation to one another and other lactic bacteria, such asS. thermophilus, and bifidobacteria present in mixtures in commercial fermented milks. The specificity of the media and the different incubation conditions enable the colonies to be differentiated without the addition of antibiotics that can affect growth and, consequently, quantification. The method has been validated on the basis of specificity, reproducibility, recovery of the tested population and interspecies competition.

Fecha de solicitud: 10/01/2008.- Titular: Consejo Superior de Investigaciones Científicas (CSIC)

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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