E213 (calcium benzoate)

E213 is calcium benzoate. In food technology, this additive is primarily considered a preservative: its task is to slow down spoilage, control the growth of undesirable microorganisms, or maintain product stability during storage.

What is this additive

By its nature, E213 is a calcium salt of benzoic acid. For accuracy, it is important not to confuse it with neighboring E-codes: close numbers often denote salts of the same acid or substances of the same group, but this is not always the same.

Preservatives do not make a product “eternal” and do not fix poor raw materials. They only work within a specific technology: at the required acidity, humidity, temperature, dosage, and sanitary quality of production.

Why it is used

The main mechanism of action: it works as a preservative in an acidic environment. That is why E213 is used not for taste or nutritional value, but for shelf life, safety, and predictable product quality.

In practice, E213 can be found in products such as sauces, beverages, marinades, fruit products, and some ready-made items. Specific permitted categories and levels depend on the legislation of the country and the type of product.

Nutrition and metabolism

In normal technological doses, preservatives are rarely a significant source of calories, proteins, fats, or carbohydrates. For blood glucose and insulin, the product itself is often more important: sugar, starch, flour, syrups, alcohol, salt, fats, and portion size.

However, frequent consumption of products with preservatives may be a marker of an ultra-processed diet. Therefore, the question is not only about one E-number but about the overall structure of the diet: how many whole foods, proteins, fibers, minerals, and normal foods are in the diet.

Safety and limitations

E213 is not a source of calcium in a nutritional sense: it is used for preservation, not for mineral enrichment.

Individual tolerance varies. Sensitive individuals may have reactions to certain groups of preservatives, especially sulfites, benzoates, or nitrite-nitrate products; if a reaction occurs repeatedly, it is advisable to compare symptoms with the label and discuss it with a specialist.

How to read the label

E213 may be listed on the label as an E number or by its name: calcium benzoate. It is better to evaluate it along with the function of the additive, the product category, frequency of consumption, shelf life, and the full composition, rather than drawing conclusions solely based on the presence of the E-code.