E218 - Methyl p-hydroxybenzoate

Origin

Methyl p-hydroxybenzoate, also known as methylparaben, is a synthetic preservative. It is an ester of p-hydroxybenzoic acid and methanol. It does not occur naturally to any significant extent.

Usage

Methylparaben is widely used as an antimicrobial preservative in food, cosmetics, and pharmaceuticals. It is effective against a wide range of bacteria, yeasts, and molds. In food, it is used to extend shelf life by preventing spoilage. Typical applications include baked goods, beverages, jams, jellies, and processed fruits and vegetables. It can be used alone or in combination with other parabens, such as ethylparaben (E214) and propylparaben (E216), to broaden its spectrum of activity. The typical usage levels in food range from 0.01% to 0.1%, depending on the application and regulatory limits. It is also used in personal care products like shampoos, lotions, and creams to prevent microbial contamination.

Side Effects

Methylparaben is generally considered safe for use in food and cosmetics at permitted levels. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has established an Acceptable Daily Intake (ADI) of 0-10 mg/kg body weight for methyl-, ethyl-, and propylparabens combined. Some individuals may experience allergic reactions to parabens, although these are relatively rare. Symptoms can include skin irritation, contact dermatitis, and, in very rare cases, anaphylaxis. There has been some concern regarding the potential estrogenic activity of parabens, but studies have shown that their estrogenic effects are very weak, much weaker than natural estrogens. Regulatory bodies like EFSA and FDA have reviewed the scientific evidence and concluded that the use of methylparaben at permitted levels does not pose a significant health risk.

Regulatory Status

Methylparaben (E218) is approved for use as a food additive in many countries, including the European Union, the United States, and Canada. Regulatory limits vary depending on the specific food product and region. In the EU, it is regulated under Regulation (EC) No 1333/2008 on food additives. The FDA regulates its use in the US under various sections of Title 21 of the Code of Federal Regulations (CFR).