Question

14. Rama's grandma prepares pickles at home and always ensures excess use of
oil in pickles. Rama is curious to know the reason. Write the reasons to help her
out.

Answer 1

Answer:

Osmosis is also used for preserving fruits and meats, though the process is quite different for the two. In the case of fruit, osmosis is used to dehydrate it, whereas, in the preservation of meat, osmosis draws salt into it, thus preventing the intrusion of bacteria.

Microbes cannot grow in a condition where oil is present. It is because it makes a shield on top of the pickle which prevents aerobic conditions inside the jar.

Answer 2

Explanation:

Oil helps seal off the air (oxygen) and works better with Indian spices. By sealing off the oxygen supply, home-made pickles encourage good bacteria multiplication. A temperature of 20-25 degrees Celsius is ideal for fermentation, which is why pickles made at home are placed in jars which are then placed in the sun.