What Are Sulfites: An Overview

Sulfites, also known as sulfur dioxide, are a naturally occurring compound that exists in the atmosphere. It is a general term used to refer to various sulfur-containing compounds, many of which are widely used in food processing, wine-making, and the preservation of a variety of foods. In essence, sulfites help to lengthen the shelf-life and preserve freshness of foods.

Sulfites and Food

Sulfites are often used in food processing and can be found in foods such as dried fruit, pickles, shrimp, sauerkraut, grape-juices, and beer. Additionally, some food manufacturers use sulfites to preserve color and texture of products such as potato chips and french fries as well as to prevent mold growth in grapes and other fruits. Sulfites are also used to deactivate enzymes and accelerate bleaching or maturing of food products such as flour, cornstarch and corn syrup.

Health Effects of Sulfites

Though they are not generally considered dangerous, sulphites may have serious health implications for some individuals. People who have asthma or suffer from allergies may experience difficulty in breathing, wheezing and chest tightness when exposed to high concentrations of sulfites. In addition, sulfites can cause skin irritation and anaphylaxis in some individuals. As a general precaution, individuals with asthma, allergies and other health issues, should limit their intake of sulfites.

In conclusion, sulfites are a naturally-occurring compound used in the processing and preservation of many foods. Though sulfites are generally safe, people with asthma, allergies and other health issues, should limit their consumption of food products containing sulfites.