Calcium citrate is mainly used as a calcium fortifier and is widely used in the food industry, mainly due to its good solubility, acidity and preservative properties. By adding calcium citrate, food producers can increase the calcium content of food products without altering the original taste and texture of the food, meeting the nutritional needs of consumers. Calcium citrate provides a mild and refreshing sour flavor and can be used in combination with other flavorings to give foods a richer and more varied taste.

Calcium citrate also has a certain preservative effect, can reduce the pH value in food, inhibit the growth and reproduction of bacteria, thus extending the shelf life of food. Adding calcium citrate to perishable foods such as dairy products, meat and fruit products can effectively prevent food spoilage and maintain the freshness and safety of food.