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Effect of pH and water activity on the growth of Arcobacter sp. in culture

Author

Listed:
  • L. Červenka

    (Department of Analytical Chemistry and)

  • I. Zachová

    (Department of Analytical Chemistry and)

  • P. Minříková

    (Department of Analytical Chemistry and)

  • J. Vytřasová

    (Department of Analytical Chemistry and)

Abstract

The effect was studied of pH value and water activity (aw) on the growth of Arcobacter butzleri and Arcobacter cryaerophilus in culture media at 30°C. Various weak organic acids were used to achieve target pH, and different humectants were used to control aw. Generally, the growth of arcobacters was inhibited at medium pH. Compared to propionic, lactic, malic and ascorbic acids (pH 5.5-5.0), formic, citric and tartaric acids in the pH range of 6.0-5.5 were more inhibitory to both arcobacter species. Both arcobacter strains were extremely sensitive to broth environment with aw values of < 0.980 using NaCl, glycerol and sucrose as humectants. This sensitivity to aw and pH may well be an important constraint for the distribution and survival of Arcobacter sp. in the environment, particularly in foods and food products.

Suggested Citation

  • L. Červenka & I. Zachová & P. Minříková & J. Vytřasová, 2003. "Effect of pH and water activity on the growth of Arcobacter sp. in culture," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 21(6), pages 203-209.
    • Handle: RePEc:caa:jnlcjf:v:21:y:2003:i:6:id:3499-cjfs
    DOI: 10.17221/3499-CJFS
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