Method for direct selection of potentially probiotic Bifidobacterium strains from human feces based on their acid-adaptation ability

Journal of Microbiological Methods
M C Collado, Y Sanz

Abstract

A method for direct selection of acid-resistant Bifidobacterium strains was developed by prolonged exposure of human feces to homologous lethal stress conditions. The recovered strains were intrinsically resistant to acidic gastric conditions (pH 2.0) and also showed good tolerance to high concentrations of bile salts and NaCl. Bifidobacterium breve and Bifidobacterium adolescentis were, respectively, the infant- and adult-type bifidobacterial species showing the highest ability to develop an acid-tolerant phenotype. Therefore, this procedure could be applicable to the direct selection of Bifidobacterium strains with improved stability in adverse environments and, probably, contribute to expand the spectra of probiotic species of human origin currently marketed.

References

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May 12, 2004·International Journal of Food Microbiology·Mitsuharu MatsumotoYoshimi Benno

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Citations

Aug 28, 2007·Applied and Environmental Microbiology·Borja SánchezMonique Zagorec
Jan 1, 2012·Microbial Ecology in Health and Disease·Miguel Gueimonde, Borja Sánchez
May 22, 2013·International Journal of Food Microbiology·Elloise du ToitSeppo Salminen
Jan 5, 2011·International Journal of Food Microbiology·M SaarelaS Tynkkynen
Nov 13, 2007·Food Microbiology·María Consuelo PalaciosYolanda Sanz
Nov 28, 2012·FEMS Microbiology Letters·Irene González-RodríguezBorja Sánchez
Apr 4, 2018·European Journal of Pediatrics·Claire WatkinsC Anthony Ryan
Oct 30, 2020·Bioscience of Microbiota, Food and Health·Duygu Alp, Hakan KuleaŞan

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