Propionic acid
Score impact
-0.10
points/product
Description
E280, known as propionic acid, is a food additive classified as a preservative. It is a short-chain fatty acid that occurs naturally in some fermented foods, such as Swiss cheese, and is also produced by bacterial fermentation in the human gut. Industrially, it is mainly obtained by catalytic oxidation of propionaldehyde or by carbonylation of ethylene with carbon monoxide.
It is a colorless, oily liquid with a pungent, slightly rancid odor. Its main function is to inhibit the growth of molds and bacteria, especially in bakery products and cheeses.
Propionic acid was approved as a food additive in the European Union in the 1980s and its use is regulated by Regulation (EC) 1333/2008. The European Food Safety Authority (EFSA) has evaluated its safety several times, establishing an Acceptable Daily Intake (ADI) of 0-10 mg/kg body weight. The World Health Organization (WHO) has also evaluated it and supports this ADI.
In general, it is considered a safe preservative at authorized doses. On food labels, it must appear as "propionic acid" or with its E number E280.
E280 is mainly used in bakery products and industrial pastries to prevent mold growth and extend shelf life. It is also used in processed cheeses, especially those requiring long-term preservation.
In the Spanish market, it is commonly found in sliced bread, hamburger buns, rolls, cakes, and some types of grated or sliced cheese. According to Regulation EC 1333/2008, authorized limits vary: in bread and bakery products, up to 3000 mg/kg; in processed cheeses, up to 3000 mg/kg; in other products such as sauces, up to 1000 mg/kg. In the United States, the FDA considers it GRAS (Generally Recognized as Safe) and allows its use without specific limits in most foods, subject to good manufacturing practices. In Japan, its use is permitted in bread and bakery products with limits similar to European ones.
Propionic acid is generally well tolerated by the general population. In animal studies, very high doses (far above the ADI) have shown effects on lipid metabolism and possible gastric irritation. In humans, no significant adverse effects have been documented at authorized doses. Some people may experience mild gastrointestinal discomfort if they consume large amounts, but there is no evidence of chronic toxicity.
EFSA concluded that there is no safety concern for the general population at current exposure levels. However, caution is recommended in people with rare metabolic disorders, such as propionic acidemia, who cannot properly metabolize this acid. No interactions with medications are known.
In summary, E280 is considered safe for the average consumer.
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