Q. Neohesperidine is obtained from
- Watermelon
- Grape
- Papaya
- Orange
Answer: d)
Orange: Two main types of bitterness, caused by two different types of compounds, occur in citrus fruits. Flavanone neohesperidosides, as naringin in grapefruit and neohesperidin in sour oranges, produce the typical bitterness of fruits and juices from these species.
Q. Moisture content of banana is nearly
- 10%
- 40%
- 80%
- 95%
Answer: c)
Original water content before drying %
Banana – 74%
Blueberries – 85 %
Broccoli – 91%
Cabbage (green)- 93%
Q. Which of the following component of fruit act as antioxidant
- Malic acid
- Pectin
- Vitamin C
- None of the above
Answer: c)
Vitamin C: As an antioxidant, vitamin C provides protection against oxidative stress-induced cellular damage by scavenging of reactive oxygen species, vitamin E-dependent neutralization of lipid hydroperoxyl radicals, and by protecting proteins from alkylation by electrophilic lipid peroxidation products.
Q. Which of the following acts as the chelating agent in fruit products thus removing the catalysts of oxidation from the system
- Vitamin C
- Sugar
- Citric acid
- Pectin
Answer: c)
Citric acid: Citric acid is an excellent chelating agent, binding metals by making them soluble. It is used to remove and discourage the buildup of limescale from boilers and evaporators.
Q. Which of the following is used as the clarifying agent of fruit juice
- Pectin
- Gelatin
- Calcium propionate
- None of the above
Answer: b)
Gelatin: It works like other fining agents when added to cold beer – it helps speed up the clarification process. It “grabs” proteins and other haze forming particulates and helps them settle out faster.
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