Question

why vinegar used in pickling

Answer 1

vinegar is used in pickles as a preservative to stop the contact between the air and pickle.this is done because to avoid the microbial enzymes containing in the pickles .❤❤

Answer 2

The primary causes of food spoilage are microorganisms, these could be bacteria, yeast or moulds. Some of these can be harmful if you eat food tainted with them, these are called pathogens. Others aren’t harmful but will still break down the food and make it undesirable to consume.
To preserve food we want to inhibit or stop the growth of microorganisms that will shorten the lifespan of the food. Cold temperatures inhibit their growth this is why we store foods prone to spoiling in the refrigerator or freezer.
Acidic environments also inhibit or stop microorganisms from growing or surviving.
By submerging foods in an acidic environment like vinegar we can stop bacteria or yeasts from growing on the food and effectively make it safe to eat for much longer periods of time, up to month or years in many cases.

HOPE THIS HELP YOU ☺☺
it is easy to understand