Acidity 5

Acetic acid is a weak organic acid that gives vinegar its sour taste and pungent smell. It is produced industrially through the carbonylation of methanol or the fermentation of ethanol by acetic acid bacteria. In food production, it's often produced via fermentation of sugars or alcohol.

Acetic acid is primarily used as an acidity regulator, a preservative, and a flavoring agent. It helps control pH in foods, which can prevent spoilage and enhance taste. It is commonly found in salad dressings, pickles, ketchup, mustard, and other sauces.

Acetic acid is generally recognized as safe (GRAS) by the FDA for use in food. It is a common component of vinegar, which has been consumed for centuries. While generally safe, highly concentrated forms can be irritating. International bodies like JECFA have evaluated acetic acid and its salts, finding them safe for consumption.