Sodium nitrate (E251) – what is it?
Sodium nitrate, also designated as E251, is a chemical compound that consists of sodium, nitrogen and oxygen atoms. It is a white crystalline substance with hygroscopic properties, meaning that it absorbs moisture from the environment.
It is commonly used as a preservative in the food industry.
Properties of sodium nitrate (E251)
Sodium nitrate is soluble in water and alcohol, making it easy to add to a variety of foods. It also has the ability to inhibit bacterial growth, which contributes to prolonging the shelf life of food products.
Uses of sodium nitrate (E251)
Sodium nitrate is commonly used as a preservative in meat and meat products, such as sausages, hams and cold cuts. It protects these products from spoilage by inhibiting the growth of bacteria such as Clostridium botulinum, which can cause food poisoning.
In addition, sodium nitrate is also used in cheese production and in the fish industry to prevent bacterial contamination.
Where to buy sodium nitrate (E251)?
Sodium nitrate in technical form is available at chemical supply stores or chemical wholesalers. However, for food use, it can be found in grocery stores, especially in the canned goods section.
Sodium nitrate (E251) and its functions in food
Sodium nitrate plays a key role as a preservative in the food industry. Its main function is to prevent bacterial growth, which leads to prolonging the shelf life of food products, especially meat products. This allows consumers to enjoy products with a longer shelf life, and reduces the risk of food poisoning associated with pathogenic bacteria.
However, due to potential health effects, the compound is regulated and its use is subject to strict standards and quantitative restrictions.
