Discussion
Refrigeration at 40 degrees Fahrenheit acts by
Answer: D
Correct answer: slowing growth, not killing
Refrigeration is bacteriostatic, not bactericidal: it slows metabolism and lengthens the generation time so that the population grows too slowly to matter within the shelf life. The organisms are still present and still viable, and they resume growth as soon as the food warms. This is why chilled food has a limited shelf life and why refrigeration cannot repair food that has already been abused.
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