Questions
Which of the following is not a common method used to adulterate fruit juice?
- Adding water
- Adding sugar
- Adding artificial flavors
- Adding pulp from other fruits
What is the Brix value of pure orange juice?
- 10-12
- 12-14
- 14-16
- 16-18
Which analytical technique is commonly used to detect the adulteration of fruit juice with water?
- Gas chromatography-mass spectrometry (GC-MS)
- High-performance liquid chromatography (HPLC)
- Nuclear magnetic resonance (NMR) spectroscopy
- Refractometry
What is the role of citric acid in fruit juice?
- It enhances the flavor of the juice.
- It acts as a preservative.
- It helps to stabilize the color of the juice.
- All of the above
Which of the following is not a regulatory body responsible for ensuring the authenticity of fruit juices?
- Food and Drug Administration (FDA)
- European Food Safety Authority (EFSA)
- Codex Alimentarius Commission (CAC)
- International Organization for Standardization (ISO)
What is the term used to describe the process of removing water from fruit juice to concentrate its flavor and sugar content?
- Evaporation
- Distillation
- Reverse osmosis
- Ultrafiltration
Which of the following is not a common adulterant used in apple juice?
- High-fructose corn syrup
- Water
- Artificial sweeteners
- Grape juice
What is the role of pectin in fruit juice?
- It provides a cloudy appearance to the juice.
- It acts as a thickener or stabilizer.
- It enhances the flavor of the juice.
- It helps to preserve the color of the juice.
Which of the following is not a common method used to detect the adulteration of fruit juice with sugar?
- Measuring the Brix value
- HPLC analysis of sugar profile
- Gas chromatography-mass spectrometry (GC-MS)
- Nuclear magnetic resonance (NMR) spectroscopy
What is the maximum allowable level of sulfur dioxide in fruit juice according to Codex Alimentarius standards?
- 100 mg/L
- 150 mg/L
- 200 mg/L
- 250 mg/L
Which of the following is not a common adulterant used in orange juice?
- Water
- High-fructose corn syrup
- Lemon juice
- Tangerine juice
What is the role of ascorbic acid in fruit juice?
- It acts as an antioxidant.
- It enhances the flavor of the juice.
- It helps to stabilize the color of the juice.
- All of the above
Which of the following is not a common adulterant used in grape juice?
- Water
- High-fructose corn syrup
- Apple juice
- Red wine
What is the term used to describe the process of adding water to fruit juice to reduce its concentration?
- Dilution
- Evaporation
- Reverse osmosis
- Ultrafiltration
Which of the following is not a common adulterant used in pineapple juice?
- Water
- High-fructose corn syrup
- Apple juice
- Orange juice