Lactobacillus rhamnosus CRL 1505 and Improved Thermotolerance

• Inorganic salts and intracellular polyphosphate inclusions play a role in the thermotolerance of the immunobiotic Lactobacillus rhamnosus CRL 1505

  • 2017-06-08
  • PLOS ONE 12(6)
  • • M. A. Correa Deza
    • M. Grillo-Puertas
    • S. Salva
    • V. Rapisarda
    • C. L. Gerez
    • G. Font de Valdez

  • PubMed: 28594955
  • DOI: 10.1371/journal.pone.0179242

  1 Insight on

  • Improved Thermotolerance

  • Low evidence
  • Rigorous Journal

  The strain displayed a high intrinsic thermotolerance (55°C, 20 min); however, after 5 min at 60°C in phosphate buffer a two log units decrease in cell viability was observed. Different heat shock media were tested to improve the cell survival. Best results were obtained in the medium containing inorganic salts ... likely as using 10% skim milk.

  Effect

  Beneficial

  Effect size

  Moderate