Effects of addition of sucrose and salt, and of starvation upon thermotolerance and survival during storage of freeze-dried Lactobacillus delbrueckii ssp bulgaricus

A. S. Carvalho, J. Silva, P. Ho, P. Teixeira*, F. X. Malcata, P. Gibbs

*Corresponding author for this work

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44 Citations (Scopus)
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Abstract

Increased survival of freeze-dried cells of Lactobacillus bulgaricus was observed when the drying medium was supplemented with sucrose; however, the magnitude of such protection was dependent on the growth medium used. Supplementing the growth medium with NaCl markedly increased survival of dried cells, and only a small effect was exerted by the composition of the drying medium or prior to starvation of cells. The D57 values of Lactobacillus bulgaricus cells grown in MRS were about half of those of cells grown in MRS supplemented with sucrose, with sucrose plus NaCl, or with NaCl.

Original languageEnglish
Pages (from-to)2538-2541
Number of pages4
JournalJournal of Food Science
Volume68
Issue number8
DOIs
Publication statusPublished - Sep 2003

Keywords

  • Growth medium
  • Preservation
  • Starter culture
  • Viabilty

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