I am not sure but there are way to many to list you might be better off typing in a specific food to find the answer out
da machinery in fabrics
gastric acid
Acid is added to drinks to act as a preservative.
Both fluids and saliva are added to food in the mouth. In the stomach, mostly acid is added.
the stomach
acid are also used to preserve food.for example ,when vinegar (acetic acid) is used in making a pickles or sauces, the acid prevents the growth of bacteria , some of which may be harmful.
When an acid based food is added to Jello mix and water, then allowed to cool, the Jello will not set. Acid based foods should be added to Jello after it has fully set.
A lighter shade of blue
known more commonly as "citric acid" and is triprotic. It occurs natually in fruits but is mostly added to food as preservatives.
when acid is added to a substance in the pH, the substance rises in a pressurized state
Citric acid is added for tartness.
It's an amino acid which is added to food to improve taste, but high quantities can cause sweating and hyperactivity.
It is added to protonate the sodium benzoate.