FOOD QUALITY AND SAFETY
FOOD SAFETY MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2.5-8.0
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3.0-7.0
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4.6-7.5
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5.3-9.2
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Detailed explanation-1: -Bacteria grow best in an environment that is slightly acidic or neutral (pH level of 4.6-7.5) and they flourish in a pH range between 6.6 and 7.5. Most bacteria will not grow at pH levels below 4.6 because the environment is too acidic.
Detailed explanation-2: -Neutrophiles. Most bacteria are neutrophiles, meaning they grow optimally at a pH within one or two pH units of the neutral pH of 7, between 5 and 8 (see Figure 9.35). Most familiar bacteria, like Escherichia coli, staphylococci, and Salmonella spp.
Detailed explanation-3: -Most pathogens can grow at pH values between 4.6 and 9.0, but very acid or sour foods (pH below 4.6) discourage the growth of many microorganisms. Foods with a pH less than or equal to 4.6 are called high acid foods.