E281 - Sodium propionate

Origin

Sodium propionate is the sodium salt of propionic acid. Propionic acid occurs naturally in some cheeses and is formed during the fermentation of Swiss cheese. Commercially, it is produced synthetically.

Usage

Sodium propionate is primarily used as a preservative in a wide variety of food products. It is effective at inhibiting the growth of mold and some bacteria, thus prolonging the shelf life of baked goods, cheeses, processed meats, and other foods. It is particularly useful in preventing rope spoilage in bread. The typical concentration used in foods ranges from 0.1% to 0.4%. It is also used in animal feed.

Side Effects

Sodium propionate is generally considered safe for human consumption at the levels typically used in food. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has established an Acceptable Daily Intake (ADI) of 'not specified', meaning that, based on available data, the total daily intake of the substance arising from its use at levels necessary to achieve the desired effect and from its acceptable background in food does not represent a hazard to health. Some individuals may experience mild gastrointestinal discomfort after consuming large amounts. There have been rare reports of allergic reactions. Some studies have suggested a possible link between propionates and behavioral changes in sensitive individuals, but further research is needed to confirm these findings.

Regulatory Status

Sodium propionate is approved for use as a food additive in many countries, including the United States, Canada, and the European Union. In the EU, it is designated as E281. Regulations specify the foods in which it can be used and the maximum permitted levels.