Discussion
Refrigeration of food
Answer: A
Correct answer: slows microbial growth without stopping it
Chilling reduces metabolic rate but does not sterilise, and the psychrotrophs - Listeria, Yersinia, Pseudomonas and others - continue to grow slowly at refrigeration temperatures. Refrigeration therefore extends shelf life by days or weeks rather than indefinitely, and does not make an unsafe food safe.
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