Question

why are the food stuffs sour and bitter taste?​

Answer 1

Answer:

Some food items or drinks also develop a sour taste after they are spoiled such as milk, wine etc. The sourness in the foods is caused by one or more types of organic acids (hydrogen ions) present in the foods.

Answer 2

Explanation:

The sence of taste in sensory system that is partially responsible for the perception of taste.the taste of sour and bitter are triggered by the molecules of food items when the molecules enters in taste buds so food stuffs sour and bitter to taste