Question: How much preservative is used to make one liter of orange juice squash? (RJ Supervisor 2012)
Options:
2.5 grams Potassium Metabisulfite
2.5 grams Sodium Benzoate
5.0 grams Potassium Metabisulfite
5.0 grams Sodium Benzoate
-Effective preservative, inhibiting growth of bacteria, yeasts, and molds
-Strong antioxidant properties, maintaining color and flavor during storage
🔑Key Points:
✏️Potassium Metabisulfite (KMS):
-Also known as KMS
-Sulfur dioxide (SO₂) responsible for preservation
-Appearance: White crystalline powder with strong sulfur odor
✏️Primary Uses:
-Preservative and antioxidant in food and beverage industry
-Prevents growth of wild yeasts and bacteria
-Used for sterilization of winemaking equipment
✏️Mechanism:
-Releases sulfur dioxide (SO₂) when dissolved
-Protects against oxidation and microbial growth
✏️Advantages:
-Preferred over sodium metabisulfite due to no sodium introduction
-Strong antioxidant properties preserve flavors and colors
✏️Regulation:
-Widely accepted by food safety authorities
-Subject to specific usage limits due to potential allergenic effects