Ingredient · E270

Whey Acid

Source
Animal-derived
Allergen
No
Role in food
Whey acid functions as an acidity regulator, flavor enhancer, and preservative. It imparts a …

What is Whey Acid?

Whey acid, also known as lactic acid, is a naturally occurring organic acid. It is produced by the fermentation of carbohydrates, such as lactose (milk sugar) or starch, by certain bacteria. In food production, it is often manufactured through industrial fermentation processes.

Is Whey Acid vegan?

No. Whey Acid is animal-derived, so it is not vegan.

Is Whey Acid gluten-free?

It is not one of the nine major allergens, nor does it contain gluten.

Is Whey Acid a major allergen?

Whey acid is derived from milk sugar (lactose) and therefore is considered a dairy derivative.

What is Whey Acid used for?

Whey acid functions as an acidity regulator, flavor enhancer, and preservative.

Is Whey Acid safe?

Whey acid is generally recognized as safe (GRAS) by the FDA for use in food.

Why it's used

Whey acid functions as an acidity regulator, flavor enhancer, and preservative. It imparts a sour or tangy taste and can help extend the shelf life of foods. It is commonly found in dairy products, baked goods, confectionery, and beverages.

Health notes

Whey acid is generally recognized as safe (GRAS) by the FDA for use in food. It is a natural byproduct of metabolism in the body. International bodies like JECFA have evaluated lactic acid and its salts, finding them safe for consumption. No significant health controversies are associated with its use at typical dietary levels.

Allergen info

Whey acid is derived from milk sugar (lactose) and therefore is considered a dairy derivative. It is not one of the nine major allergens, nor does it contain gluten.

Foods that contain Whey Acid

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Auto-generated content. This description was generated automatically and is pending editorial review. Inaccuracies are possible. Found a mistake? Contact us.

Last updated: October 5, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.