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      Question

      The undesirable enzymatic browning observed in cut

      apples is mainly caused by which of the following enzymes?
      A Hydrogenase Correct Answer Incorrect Answer
      B Peroxidase Correct Answer Incorrect Answer
      C Polyphenol oxidase Correct Answer Incorrect Answer
      D None Correct Answer Incorrect Answer

      Solution

      Polyphenol oxidase (PPO) catalyzes the oxidation of phenolic compounds in apple tissues when exposed to air, leading to browning. This is a common issue in fresh-cut fruits and is minimized by using antioxidants like ascorbic acid.

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