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प्रश्न
Explain why this happens and suggest possible remedies.
Cut fruits have turned black.
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उत्तर
Fruit contains an enzyme called polyphenol oxidase or tyrosinase that reacts with oxygen. The oxidation reaction basically forms a sort of rust on the surface of fruits so it turns black. Small amount of lemon juice should be applied to the surface of cut fruits as it prevents the oxidation of the fruits.
संबंधित प्रश्न
Vinegar is a ______ type of food preservative.
We can preserve pickle by______.
The physician who discovered that scurvy can be cured by ingestion of citrus fruits is ______.
Give reason for the following statement.
Salt is added as a preservative in pickles
Name one commercial use of yeast.
Give reason for the following.
Raw vegetables and fruits are kept in refrigerators, whereas jams and pickles can be kept outside.
Why do we need to preserve food?
Why is the oil used as a preservative for pickles?
Find the odd-man-out.
Find the odd-man-out.
