Sodium sulfite (E221) – what is it?
Sodium sulfite, also known as E221, is a chemical compound used as a preservative in the food industry. It is the sodium salt of sulfuric acid, characterized by antibacterial and antioxidant properties, which helps prolong the freshness and shelf life of food products.
Its use is widespread, but it is particularly popular in the preservation of dried fruits, vegetables, wines and in some meat products. E221 helps prevent oxidation and browning, thus preserving the natural color and flavor of foods.
Properties of sodium sulfite
Sodium sulfite acts as a strong preservative and antioxidant. It effectively inhibits the growth of bacteria, mold and yeast, so food products retain their quality for a longer period of time. In addition, it prevents oxidation of fats and vitamins, which is crucial for preserving the nutritional value of products.
Uses of sodium sulfite
E221 is used in many food industries. It is added to wines to prevent fermentation and maintain clarity. In fruit and vegetable processing, it protects against darkening and color loss. In the production of juices, beverages and canned goods, it helps preserve freshness and prevents the growth of unwanted microorganisms.
Where to buy sodium sulfite?
Sodium sulfite can be purchased at specialty stores with raw materials for the food industry, as well as at some pharmacies or online chemical stores. It is available to industrial manufacturers, as well as smaller food producers and individual users interested in home food processing.
Sodium sulfite and its functions in food
As a food additive, E221 has several key functions. In addition to its preservative and antioxidant effects, sodium sulfite is used to stabilize and maintain the consistency of products. Its presence in food allows it to maintain an attractive appearance, aroma and taste, which is particularly important for products that are exported and stored for long periods of time.
