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प्रश्न
Explain why this happens and suggest possible remedies.
Cut fruits have turned black.
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
Salt is a ______ type of food preservative.
Earlier people cooked their food in pressure cooker. __________
Vinegar is added as a preservative for pickles.
Give reason for the following statement.
Salt is added as a preservative in pickles
Unscramble the jumbled word underlined in the following statement.
Yeasts are used in the wine industry because of their property of meronettinaf.
Give an example of a substance used to protect food grains in the olden days ______.
______ is a natural preservative used to increase the shelf life of fruit juices/squash.
Give examples of synthetic food preservatives.
What shall we do?
There are vendors selling uncovered sweetmeats in open places in the market.
Find the odd-man-out.
