Journal
FOOD CONTROL
Volume 20, Issue 1, Pages 59-66Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.foodcont.2008.02.003
Keywords
Listeria monocytogenes; acid tolerance response; orange juice; minimally processed orange slices
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The aim of this work was to study the growth/survival of acid-adapted cells of Listeria monocytogenes, in orange juice and ill minimally processed orange slices. The L. monocytogenes OML 45 behaviour into TSB (Tryptic Soy Broth) medium was evaluated at different pH values (between 3.7 and 6.7). The acid-adapted cells were obtained maintaining L. monocytogenes in TSB at pH 5.7 for 3 h. The obtained cells were then inoculated into a diluted orange juice with a pH of 2.6. Moreover, the acid-adapted cells were inoculated into minimally processed orange slices. The growth was evaluated during storage at different temperatures. The study confirms that orange juice and minimally processed orange slices call support the acid-adapted pathogen growth. (c) 2008 Elsevier Ltd. All rights reserved.
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