human pathogens such as e. coli o157:h7 or listeria monocytogenes cannot survive in wine because of the combined presence of:



Answer :

Human pathogens such as e. coli o157:h7 or listeria monocytogenes cannot survive in wine because of the cumulative presence of: low pH, alcohol, polyphenolics, sulfur dioxide.

Wine has a pH that normally ranges from 3.1 to 3.9 [2-4], which implies that most human pathogenic bacteria cannot thrive in it simply because of its high acid content (low pH). Regarding their ability to survive in wine, a substantial body of research suggests Salmonella, Listeria monocytogenes, and Escherichia coli O157:H7 have the ability to adapt to acidic environments and acquire some level of acid resistance.

But according to study, vegetative pathogens that are present at wine's pH levels are likely to disappear swiftly within a few hours to a few days when left at ambient temperature.

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