Effect of ph in the survival of lactobacillus salivarius strain uco 979c wild type and the ph acid acclimated variant


Effect of ph in the survival of lactobacillus salivarius strain uco 979c wild type and the ph acid acclimated variant
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Esteban Paredes-Osses ; Carlos L. González ; Apolinaria García ;Electronic Journal of Biotechnology 2015, 18 5
Autor: Enrique Sanhueza
Fuente: http://www.redalyc.org/
Introducción
Electronic Journal of Biotechnology
E-ISSN: 0717-3458
edbiotec@ucv.cl
Pontificia Universidad Católica de
Valparaíso
Chile
Sanhueza, Enrique; Paredes-Osses, Esteban; González, Carlos L.; García, Apolinaria
Effect of pH in the survival of Lactobacillus salivarius strain UCO_979C wild type and the
pH acid acclimated variant
Electronic Journal of Biotechnology, vol.
18, núm.
5, 2015, pp.
343-346
Pontificia Universidad Católica de Valparaíso
Valparaíso, Chile
Available in: http:--www.redalyc.org-articulo.oa?id=173341774010
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Electronic Journal of Biotechnology 18 (2015) 343–346
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Electronic Journal of Biotechnology
Effect of pH in the survival of Lactobacillus salivarius strain UCO_979C
wild type and the pH acid acclimated variant
Enrique Sanhueza, Esteban Paredes-Osses, Carlos L.
González, Apolinaria García ⁎
Laboratorio de Patogenicidad Bacteriana, Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Casilla 160-C, Concepción, Chile
a r t i c l e
i n f o
Article history:
Received 1 April 2015
Accepted 20 May 2015
Available online 26 July 2015
Keywords:
Acid stress
Acclimation
Lactobacillus salivarius
a b s t r a c t
Background: Bacterial acclimation involves cellular changes permitting the survival of a microorganism to
prolonged acid pH exposure.
The general aim of this work is to support this idea by determining the effect of
pH in the survival of the human gastric derived probiotic strain Lactobacillus salivarius UCO_979C-1 (wild
type) and L.
salivarius UCO_979C-2 (acclimation to pH 2.6), which possesses anti-Helicobacter pylori properties.
Results: To assess this aim, the exopolysa...