2005
DOI: 10.3168/jds.s0022-0302(05)72658-8
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Fermentation pH and Temperature Influence the Cryotolerance of Lactobacillus acidophilus RD758

Abstract: The effects of 3 fermentation temperatures (30, 37, and 42 degrees C) and 3 fermentation pH (4.5, 5, and 6) on the cryotolerance of Lactobacillus acidophilus RD758 were studied in relation to their fatty acid composition. Cryotolerance was defined as the ability of the cells to recover their acidification activity after freezing and frozen storage at -20 degrees C. Better cryotolerance was obtained in cells grown at 30 degrees C or at pH 5; these cells showed no loss in acidification activity during freezing a… Show more

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Cited by 108 publications
(77 citation statements)
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References 33 publications
(54 reference statements)
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“…The effect of pH on cellular physiology is confirmed by other studies which show that it influences acidification activity of lactic acid bacteria (23)(24)(25). Whereas Wang et al (25) indicated that Lactobacillus acidophilus cells grown at optimal pH display a higher residual acidification activity than cells grown at lower pH control values, Schepers et al (24) and Savoie et al (23) demonstrated that this activity is higher when starters are produced without pH control or at low pH control values.…”
supporting
confidence: 71%
See 1 more Smart Citation
“…The effect of pH on cellular physiology is confirmed by other studies which show that it influences acidification activity of lactic acid bacteria (23)(24)(25). Whereas Wang et al (25) indicated that Lactobacillus acidophilus cells grown at optimal pH display a higher residual acidification activity than cells grown at lower pH control values, Schepers et al (24) and Savoie et al (23) demonstrated that this activity is higher when starters are produced without pH control or at low pH control values.…”
supporting
confidence: 71%
“…Whereas Wang et al (25) indicated that Lactobacillus acidophilus cells grown at optimal pH display a higher residual acidification activity than cells grown at lower pH control values, Schepers et al (24) and Savoie et al (23) demonstrated that this activity is higher when starters are produced without pH control or at low pH control values. These authors explained that conditions generating high bio-mass concentrations do not systematically lead to cells with an efficient acidification activity.…”
mentioning
confidence: 99%
“…They have evolved adaptive responses, depending on bacterial species and stress conditions, mainly the synthesis of some specifi c proteins, observed especially under various cold or heat stresses and acid stress, but also changes in membrane fatty acid composition (Wang et al, 2005). Recent studies have been focused on the impact of the stress factors on bacteriocin production by lactic acid bacteria (Leroy and De Vuyst, 1999a, b;Neysens et al, 2003;Raykova et al, 2008).…”
Section: Discussionmentioning
confidence: 99%
“…It has been previously reported that membranes with high UFA/SFA ratio show a high fluidity (Casadei et al, 2002). Various studies have indicated that growth conditions, such as the composition of the growth medium (Annous et al, 1999), the growth phase of the cells (Russell et al, 1995;Kadner, 1996;Casadei et al, 2002), the incubation temperature (Annous et al, 1999;Casadei et al, 2002;Kadner, 1996;Wang et al, 2005), and the pH value (Russell et al, 1995; Brown et al, 1997;Sampathkumar et al, 2004;Wang et al, 2005) markedly affect the bacterial membrane fatty acid composition. However, little is known on the influence of these modifications in membrane composition on the bacterial resistance to subsequent stresses.…”
Section: Discussionmentioning
confidence: 99%