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Cited by 147Probiotics and Fermented FoodsInfant Nutrition and HealthGut microbiota and health

The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.

The in vitro inhibition of Gram-negative pathogenic bacteria by bifidobacteria is caused by the production of organic acids

Makras, Lefteris, De Vuyst, Luc·2006·International Dairy Journal
DOI 10.1016/j.idairyj.2005.09.006
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Abstract

Several Bifidobacterium strains, including commercial probiotics, were screened for the production of antibacterial substances active towards Gram-negative pathogenic bacteria. Agar spot assays, microtitre plate assays, and time-kill studies were performed. Bifidobacteria were found to exert strong inhibitory activity towards Gram-negative indicator bacteria, namely Salmonella enterica serovar Typhimurium SL1344 and Escherichia coli C1845. The inhibitory mechanism was investigated and was shown to be dependent on the lowering of the pH of the medium and the production of organic acids, in particular acetic acid and lactic acid. The production of other antibacterial substances was examined by concentrating the cell-free culture supernatants by ammonium sulphate precipitation and chloroform/methanol extraction. The extracts of cultures of seven Bifidobacterium strains inhibited the growth of Gram-positive indicator bacteria, indicating that they produced a bacteriocin. The extract of a culture of Bifidobacterium longum BB536 was active against E. coli as well. However, the contribution of such inhibitory substances to the antibacterial activity of bifidobacteria towards Gram-negative pathogenic bacteria was found to be negligible.

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Crossref · 10.1016/j.idairyj.2005.09.006

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  1. Anand, 1984, Antimicrobial activity associated with Bifidobacterium bifidum—I, Cultured Dairy Products Journal, 11, 6

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Metadata

Authors
Makras, L., & De Vuyst, L.
Affiliations
Vrije Universiteit Brussel (BE)
ORCID
Makras, Lefteris
Venue
International Dairy Journal
Publisher
Elsevier BV
Published
2006-09
Volume
16
Issue
9
Pages
1049-1057
ISSN
0958-6946 (ISSN-L)
DOI
10.1016/j.idairyj.2005.09.006
OpenAlex
W2036007058
Cited by
147
References
38
Citations by year
2026: 4 · 2025: 5 · 2024: 8 · 2023: 4 · 2022: 8 · 2021: 6 · 2020: 6 · 2019: 3 · 2018: 9 · 2017: 5 · 2016: 10 · 2015: 8 · 2014: 8 · 2013: 16 · 2012: 9
FWCI
10.18
Type
journal article
Language
en
Open access
closed
Licence
www.elsevier.com/tdm/userlicense/1.0/ (tdm)
Locations
International Dairy Journal (publishedVersion)
Funders
Vrije Universiteit Brussel
Topics
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
  • Health Sciences › Nursing › Nutrition and Dietetics › Infant Nutrition and Health
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
Keywords
Bifidobacterium, antibacterial activity, Gram-negative bacteria, organic acids, acetic acid, lactic acid, bacteriocins, probiotics, Salmonella typhimurium, Escherichia coli, Bifidobacterium longum BB536, cell-free supernatant, time-kill assay

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