Microbiology of food preservation - Texas A&M University
Microbiology of food preservation - Texas A&M University
Microbiology of food preservation - Texas A&M University
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Food safety concerns• Some researchers believe that MAPresults in a selection <strong>of</strong> potentialpathogens by inhibiting competitivebiota– Aeromonas hydrophila– Listeria monocytogenes• A. hydrophila survives and growsbetter in meat under air packagingcompared to vacuumAddition <strong>of</strong> chemicalpreservativesGRAS substances• Chemical additives must be listed asGRAS by FDA regulations– GRAS = Generally Recognized as Safe• There is a maximum tolerance fortheir concentration in <strong>food</strong>s• Different preservatives target specificorganisms• The effect <strong>of</strong> some preservatives isaffected by <strong>food</strong> characteristics suchas pH
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