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Cited by 507Bacterial Genetics and BiotechnologyEscherichia coli research studiesProbiotics and Fermented Foods

The DOI matches its Crossref record; 129 of the 130 references it cites were found in a registry or an index.

The Effects of Fermentation Acids on Bacterial Growth

Russell, James B., Diez-Gonzalez, Francisco·1997·Advances in Microbial Physiology
DOI 10.1016/s0065-2911(08)60017-x
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Abstract

Anaerobic habitats often have low pH and high concentrations of fermentation acids, and these conditions can inhibit the growth of many bacteria. The toxicity of fermentation acids at low pH was traditionally explained by an uncoupling mechanism. Undissociated fermentation acids can pass across the cell membrane and dissociate in the more alkaline interior, but there is little evidence that they can act in a cyclic manner to dissipate protonmotive force. Fermentation acid dissociation in the more alkaline interior causes an accumulation of the anionic species, and this accumulation is dependent on the pH gradient (delta pH) across the membrane. Fermentation acid-resistant bacteria have low delta pH and are able to generate ATP and grow with a low intracellular pH. Escherichia coli O157:H7 is able to decrease its intracellular pH to 6.1 before growth ceases, but this modest decrease in delta pH can only partially counteract the toxic effect of fermentation anion accumulation. Fermentation acid-resistant bacteria are in most cases Gram-positive bacteria with a high intracellular potassium concentration, and even acid-sensitive bacteria like E. coli K-12 have increased potassium levels when fermentation acids are present. Intracellular potassium provides a counteraction for fermentation acid anions, and allows bacteria to tolerate even greater amounts of fermentation anions. The delta pH-mediated anion accumulation provides a mechanistic explanation for the effect of fermentation acids on microbial ecology and metabolism.

Overview

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Crossref · 10.1016/s0065-2911(08)60017-x

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129 of 129 references verified0 citation errors · 0 not checkable

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Metadata

Authors
Russell, J. B., & Diez-Gonzalez, F.
Affiliations
Agricultural Research Service (US)
ORCID
Russell, James B.
Venue
Advances in Microbial Physiology
Publisher
Elsevier
Published
1997
Volume
39
Pages
205-234
ISSN
0065-2911 (ISSN-L)
DOI
10.1016/s0065-2911(08)60017-x
OpenAlex
W1570063046
Cited by
498
References
130
Citations by year
2026: 16 · 2025: 16 · 2024: 26 · 2023: 21 · 2022: 27 · 2021: 28 · 2020: 17 · 2019: 18 · 2018: 18 · 2017: 18 · 2016: 21 · 2015: 19 · 2014: 22 · 2013: 20 · 2012: 24
FWCI
5.92
Type
book chapter
Language
en
Open access
closed
Locations
  • Advances in microbial physiology/Advances in Microbial Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
  • Life Sciences › Immunology and Microbiology › Microbiology › Escherichia coli research studies
  • Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
Keywords
fermentation acids, bacterial growth inhibition, low pH, proton motive force, intracellular pH, membrane potential, potassium accumulation, Escherichia coli O157:H7, Escherichia coli K-12, Gram-positive bacteria, microbial ecology
MeSH terms
Acids, Animals, Bacteria, Biological Transport, Fermentation, Food Microbiology, Hydrogen-Ion Concentration, Intestinal Diseases, Rumen, Silage, Soil Microbiology, Solvents, Acetic Acid

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