How do sugar and salt contribute to the preservation of food?

Answer in Brief

Sugar and salt aid in food preservation in the following ways:

Sugar and salt help to preserve food by inhibiting the growth of microbes. These natural preservatives absorb excess moisture from food. Salt is a hygroscopic substance that kills bacteria and fungi in food.
The addition of sugar reduces the availability of water for microbial development.
Sugar and salt extend the shelf life of food.
Sugar functions as a preservative by facilitating the osmosis process.
Salt is naturally hypotonic and kills bacteria.

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Household Methods of Preservation of Food

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Q 5.iii | 5 marks

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