Foods can be preserved in many ways by slowing or preventing bacterial growth. Which of these methods would not generally inhibit bacterial growth?
A)Refrigeration: Slows bacterial metabolism and growth.
B)Closing previously opened containers: Prevents more bacteria from entering, and excludes O₂.
C)Pickling: Creates a pH at which most bacterial enzymes cannot function.
D)Canning in heavy sugar syrup: Creates osmotic conditions that remove water from most bacterial cells.
E)Irradiation: Kills bacteria by mutating their DNA to such an extent that their DNA-repair enzymes are overwhelmed.

Question

Quizplus · Accepted Answer

Closing previously opened containers does not necessarily prevent bacterial growth, as some bacteria may already be present in the food. It only prevents more bacteria from entering and excludes oxygen, which can lead to spoilage.

Foods Can Be Preserved in Many Ways by Slowing or Preventing