Comparing E297 - Fumaric acid vs E486 - Calcium stearoyl fumarate

Is fumaric acid bad for you?

No—at the small amounts used in foods it’s not considered harmful; very high intakes may irritate the stomach or teeth due to its acidity.

Is fumaric acid safe in food?

Yes; it’s an approved food acidulant (e.g., GRAS in the U.S.) and EFSA has found no safety concern at authorized uses and levels.

Is fumaric acid vegan?

Yes; it’s typically made synthetically or by microbial fermentation and does not require animal-derived ingredients.

What is fumaric acid in food?

An acidulant that adds tartness, controls pH, and functions as a slow-dissolving leavening acid—commonly used in beverages, confections, and tortillas to improve flavor and shelf life.

What is fumaric acid made from?

Commercially it’s produced by isomerizing maleic anhydride/maleic acid (petrochemical route) or by fermenting sugars with fungi such as Rhizopus; it also occurs naturally in small amounts in some plants and fungi.