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Frozen storage that stops bacterial growth and enzyme activity is at

  • A.minus 18 degrees Celsius or below
  • B.0 degrees Celsius
  • C.4 degrees Celsius
  • D.minus 2 degrees Celsius, superchilled

Answer: A

Correct answer: minus 18 degrees Celsius or below

Minus 18 is the conventional frozen storage standard, at which no microbial growth occurs and enzymic and chemical change proceeds so slowly as to be negligible over normal storage periods. Warmer frozen temperatures allow gradual quality loss even though the food remains microbiologically safe.

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