Ingredient · E300

To Maintain Freshness & Color

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Source
Not animal-derived
Allergen
No
Role in food
Ascorbic acid is added to foods primarily as an antioxidant to help maintain freshness …

What it is

Ascorbic acid is a form of vitamin C, a naturally occurring nutrient found in many fruits and vegetables. It is typically produced industrially through a chemical synthesis process that often starts with glucose derived from corn or other plant sources.

Why it's used

Ascorbic acid is added to foods primarily as an antioxidant to help maintain freshness and color, preventing browning and spoilage. It is also used as a nutrient supplement. It can be found in a wide variety of products, including processed fruits and vegetables, baked goods, meats, and beverages.

Health notes

Ascorbic acid is widely recognized as an essential nutrient and is generally recognized as safe (GRAS) by the FDA when used as intended. It plays a vital role in immune function and acts as an antioxidant in the body. International bodies like JECFA have evaluated its safety. While high doses can cause digestive upset in some individuals, it is not associated with significant adverse effects at typical dietary intake levels.

Allergen info

Ascorbic acid is not derived from any of the nine FDA major allergens. It does not contain gluten.

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Last updated: September 28, 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.