2015
DOI: 10.1590/s1517-838246420140595
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Abstract: The viability of Lactobacillus bulgaricus in freeze-drying is of significant commercial interest to dairy industries. In the study, L.bulgaricus demonstrated a significantly improved (p < 0.05) survival rate during freeze-drying when subjected to a pre-stressed period under the conditions of 2% (w/v) NaCl for 2 h in the late growth phase. The main energy source for the life activity of lactic acid bacteria is related to the glycolytic pathway. To investigate the phenomenon of this stress-related viability impr… Show more

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Cited by 15 publications
(7 citation statements)
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References 26 publications
(32 reference statements)
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“…It indicated that glycolysis is the vital metabolic pathway for the bacterial cells to yield more ATP in cell metabolism toward aluminum exposure. Similar finding has been reported for Escherichia coli , Bacillus subtilis , and Lactobacillus bulgaris under different stress conditions such as glucose–phosphate stress and sodium chloride stress . Apart from that, when the marine diatom Phaeodactylum tricornutum exposed to aluminum, the abundance of enzyme associated with glycolysis were also found to be up‐regulated.…”
Section: Discussionsupporting
confidence: 85%
“…It indicated that glycolysis is the vital metabolic pathway for the bacterial cells to yield more ATP in cell metabolism toward aluminum exposure. Similar finding has been reported for Escherichia coli , Bacillus subtilis , and Lactobacillus bulgaris under different stress conditions such as glucose–phosphate stress and sodium chloride stress . Apart from that, when the marine diatom Phaeodactylum tricornutum exposed to aluminum, the abundance of enzyme associated with glycolysis were also found to be up‐regulated.…”
Section: Discussionsupporting
confidence: 85%
“…Compounds such as betaine have been proven to protect lactic acid bacteria during freeze-drying (Kets and de Bont, 1994;Kets et al, 1996;Louesdon et al, 2014). Evidence has been presented (Li et al, 2015) that raising the medium osmolarity through addition of NaCl has distinct consequences for Lb. delbrueckii subsp.…”
Section: Introductionmentioning
confidence: 99%
“…In addition, about 59% of the cells were able to form colonies on GYEA agar containing 5% (w/v) ethanol and 1% (w/v) acetic acid. Previous studies have repeatedly demonstrated that pre-exposure to sub-lethal stress such as acid stress or high concentration of NaCl leads to improve the survival rate and activity of freeze-dried lactic acid bacteria (Barbosa et al, 2015; Li et al, 2015). However, to the best of our knowledge, this is the first study which shows acclimation to acetic acid increases the tolerance to freeze-drying process.…”
Section: Resultsmentioning
confidence: 99%