Calcium fumarates

Calcium fumarates are the calcium salts of fumaric acid, used as acidity regulators and calcium-delivery vehicles in food products. They acidify and buffer food systems while simultaneously contributing a bioavailable source of calcium to the product matrix. This dual function makes them of particular value in food fortification applications where calcium supplementation and acidity regulation are both desired — for example, in calcium-fortified beverages, nutritional supplements, and some dairy alternative products.

JECFA evaluated the fumarate family in 1969 and set a group ADI of 6 mg/kg body weight per day expressed as fumaric acid, covering sodium, potassium, and calcium forms. Fumaric acid enters the Krebs cycle directly and is fully metabolised in healthy individuals. The calcium component is an essential macronutrient with established safety and positive nutritional significance. No toxicological concern has been identified at food additive use levels for either the fumarate anion or the calcium cation.

Calcium fumarates are approved in the EU as E367 and in other markets for use as acidity regulators and fortification ingredients. As a calcium source, calcium fumarate is well absorbed from the gastrointestinal tract, comparable to calcium carbonate in bioavailability. This places it among the more useful food-grade calcium compounds for nutritional supplementation purposes. Consumers following calcium-enriched diets may encounter calcium fumarate in fortified products where it serves both a preservative and nutritional role. At typical dietary levels, it contributes beneficially to calcium intake without any identified adverse effects.