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Questions and Answers
What is one method to prevent browning in food?
What is one method to prevent browning in food?
- Storing food in a humid environment
- Exposing food to UV light
- Covering food with sugar syrup (correct)
- Increasing the temperature of the food
How does lemon juice contribute to preventing browning in cut fruit?
How does lemon juice contribute to preventing browning in cut fruit?
- It oxidizes vitamin C instead of fruit pigments (correct)
- It adds a protective layer of fat
- It blocks light absorption
- It increases the sweetness of the fruit
Which substance can be used as a powder to control browning?
Which substance can be used as a powder to control browning?
- Citric acid (correct)
- Lactic acid
- Acetic acid
- Butyric acid
What role does pH play in preventing browning?
What role does pH play in preventing browning?
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What is a suggested ratio when using lemon juice to prevent browning?
What is a suggested ratio when using lemon juice to prevent browning?
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Study Notes
Control of Browning in Food
- Effective prevention of browning involves minimizing oxygen contact with food substrates.
- Use of sugar syrup creates a barrier to oxygen when covering foods.
- Film wraps with low oxygen permeability can also reduce contact between food and oxygen.
- Commercially prepared citric acid or ascorbic acid can be applied to cut fruit surfaces as a control method.
- Lemon juice mixed in a 3:1 ratio with water is a recommended treatment for fruit surfaces.
- This lemon juice application promotes oxidation of vitamin C instead of food pigments.
- Acidic pH from the lemon juice helps inhibit enzymatic reactions that lead to browning.
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