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Influence of controlled pH and temperature on the growth and acidification of pure cultures of Streptococcus thermophilus 404 and Lactobacillus bulgaricus 398

Abstract : The effect of pH and temperature on the growth and acidification characteristics of Streptococcus thermophilus 404 and Lactobacillus bulgaricus 398 were studied in order to optimize starter production. A quadratic two-variable model for each of these parameters is proposed. Optimal growth conditions were found at pH 6.5 and 40° C for S. thermophilus and pH 5.8 and 44° C for L. bulgaricus. Maximum acidification was obtained at pH values and temperatures higher than the optimal growth conditions. In addition, the two strains were generally more sensitive to pH effect.
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https://hal.inrae.fr/hal-02722519
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Submitted on : Monday, June 1, 2020 - 11:25:00 PM
Last modification on : Wednesday, January 12, 2022 - 9:26:04 AM

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  • HAL Id : hal-02722519, version 1
  • PRODINRA : 95014

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Catherine Béal, Philippe Louvet, Georges Corrieu. Influence of controlled pH and temperature on the growth and acidification of pure cultures of Streptococcus thermophilus 404 and Lactobacillus bulgaricus 398. Applied Microbiology and Biotechnology, Springer Verlag, 1989, 32 (2), pp.148-154. ⟨hal-02722519⟩

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