New Prepare for NABARD 2025 exam - Based on last 4 year trend. March 5 at 5 PM. Register here

    Question

    Which of the following preservatives is most effective

    for retaining the color of beverages?
    A Sodium benzoate Correct Answer Incorrect Answer
    B Potassium metabisulfite (KMS) Correct Answer Incorrect Answer
    C Acetic acid Correct Answer Incorrect Answer
    D Citric acid Correct Answer Incorrect Answer
    E Alcohol Correct Answer Incorrect Answer

    Solution

    • Potassium Metabisulfite (KMS) :
      • It acts as an antioxidant and a reducing agent, preventing oxidation reactions that can cause color changes in beverages.
      • It is particularly effective in acidic environments, making it suitable for many beverages like juices and wines.
      • It inhibits the growth of microorganisms, which can also degrade color.
    • Sodium Benzoate :
      • Primarily used as an antimicrobial agent but not as effective in color retention.
      • Works best at a low pH but does not directly prevent oxidation of color compounds.

    Practice Next