Ingredient · E330, E331

Citric Acid Sodium Citrate

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Source
Not animal-derived
Allergen
No
Role in food
Citric acid and sodium citrate are widely used as acidity regulators, flavor enhancers, and …

What it is

Citric acid is a weak organic acid found naturally in citrus fruits. Sodium citrate is the salt form of citric acid. Both are produced commercially through the fermentation of carbohydrates, typically from corn, using a specific strain of the mold Aspergillus niger.

Why it's used

Citric acid and sodium citrate are widely used as acidity regulators, flavor enhancers, and preservatives in foods and beverages. They provide a tart or sour taste and help to balance flavors. They are commonly found in candies, jams, jellies, sodas, and processed foods.

Health notes

In the U.S., citric acid and sodium citrate are generally recognized as safe (GRAS) by the FDA. They are metabolized by the body and do not accumulate. International bodies like JECFA have evaluated citric acid and set an acceptable daily intake. While generally considered safe, very high intakes could potentially cause tooth enamel erosion due to their acidity.

Allergen info

Citric acid and sodium citrate are not derived from any of the 9 FDA major allergens. They do not contain gluten.

Products containing Citric Acid Sodium Citrate

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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.