Acids

Acids are compounds that taste sour. They can be naturally found in fruits like lemons and limes, or they can be produced through fermentation or chemical processes. Common examples include citric acid, malic acid, and phosphoric acid.

Acids are added to foods to provide a tart or sour flavor, enhance other tastes, and act as preservatives. They are frequently found in candies, soft drinks, and processed snacks like popcorn and peanuts.

In the US, many common food acids are Generally Recognized As Safe (GRAS) by the FDA. They are generally considered safe when consumed in amounts typically found in food. International bodies like JECFA and EFSA have evaluated many of these acids. While generally safe, excessive consumption of highly acidic foods and drinks can potentially erode tooth enamel.