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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
Materials like milk are instantly cooled after heating up to a certain high temperature. This method of food preservation is called ______.
Salt is a ______ type of food preservative.
How is milk pasteurized?
Look at the pictures given below. Which one is good for health? Why?
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The physician who discovered that scurvy can be cured by ingestion of citrus fruits is ______.
Give reason for the following.
Mosquitoes can be controlled by preventing stagnation of water though they do not live in water. Why?
How can we prevent the following diseases?
Hepatitis A
The synthetic preservatives do not delay microbial growth and do not keep the food safe for long-duration.
Find the odd-man-out.
Find the odd-man-out.
