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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
The biotic factor which spoils the food item is
Name any two naturally occuring toxic substances in food.
Give an example of a substance used to protect food grains in the olden days ______.
Smoking is a method of food preservation used for ______.
Why is the oil used as a preservative for pickles?
The addition of oil in pickles prevents the contact of air with the pickle.
Dried Neem leaves and turmeric are used to store food grains in our home to protect the grain from insects and Beetles.
What shall we do?
A ‘pani-puriwala’ is serving the panipuri with dirty hands.
Give reason.
Food remains safe at 5° Celsius.
Find the odd-man-out.
