Question

Give the biological reason of adding extra salt in pickles and sugar in jams.

Answer 1

• Adding excess salt to pickles (pickling) and adding excess sugar to jams help in increasing the shelf-life of pickles and jams.
• Addition of excess salt or sugar makes the pickles and jams hypertonic.
• Thus, any bacteria that grow on or contaminate these food items lose water from their cell body by plasmolysis and eventually die.