کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4369793 1616759 2006 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The Acetic Acid Tolerance Response induces cross-protection to salt stress in Salmonella typhimurium
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش تغذیه
پیش نمایش صفحه اول مقاله
The Acetic Acid Tolerance Response induces cross-protection to salt stress in Salmonella typhimurium
چکیده انگلیسی

Salmonella typhimurium induces an Acid Tolerance Response (ATR) upon exposure to mildly acidic conditions in order to protect itself against severe acid shock. This response can also induce cross-protection to other stresses such as heat and salt. We investigated whether both the acetic acid induced and lactic acid induced ATR in S. typhimurium provided cross-protection to a salt stress at 20 °C. Acid-adapted cells were challenged with both a sodium chloride (NaCl) and potassium chloride (KCl) shock and their ability to survive ascertained. Acetic acid adaptation provided cells with protection against both NaCl and KCl stress. However, lactic acid adaptation did not protect against either osmotic stressor and rendered cells hypersensitive to NaCl. These results have implications for the food industry where hurdle technology means multiple sub-lethal stresses such as mild pH and low salt are commonly used in the preservation of products.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Food Microbiology - Volume 112, Issue 1, 15 October 2006, Pages 62–65
نویسندگان
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