Bacteria, including some bacteria in a person’s gut, make lactic acid during fermentation. Manufacturers add lactic acid to food to extend its shelf life, although in some foods, it occurs naturally.

You might not have heard of it, but you've more than likely had it over the course of your life: Folic acid, a B vitamin, is a near ubiquitous presence in enriched flour, pasta, cereal, and rice. In ...

Lactic acid is a natural preservative often found in foods like yogurt, baked goods, and pickled vegetables. Along with making your food last longer, it can boost your health by strengthening your ...