Why food substances kept in salt solution?

salt solution acts as a preservative and keeps food fresh for a longer time. Another example of preservative is vinegar.

Salt is one of the most misunderstood ingredients of the culinary world. For the past sixty years, it has been engaged in an ongoing battle with its crystalline cousin, sugar. A battle it seems to have lost. But new research points to the fact that salt may be a lot healthier than we think ? and it's without a doubt the best natural preservative out there.

To preserve those food products

Because it keeps the food fresh

because salt makes the food safe for more time