Sodium methylparaben
Score impact
-0.50
points/product
Description
E219, also known as sodium methylparaben, is a food additive belonging to the preservative category. It is the sodium salt of methylparaben (E218), an ester of p-hydroxybenzoic acid. Its main function is to inhibit the growth of microorganisms such as bacteria, molds, and yeasts, thereby extending the shelf life of foods.
Industrially, it is obtained by esterification of p-hydroxybenzoic acid with methanol, followed by neutralization with sodium hydroxide to form the sodium salt. It is a white crystalline powder, odorless or with a slight characteristic odor, soluble in water and ethanol. Its stability is good over a wide pH range (3-8), although its efficacy is greater in acidic media.
The history of parabens as preservatives dates back to the early 20th century, and their use in foods was approved in the European Union after safety evaluations. EFSA (European Food Safety Authority) has re-evaluated parabens several times, establishing an Acceptable Daily Intake (ADI) of 0-10 mg/kg body weight for the sum of methylparaben and ethylparaben (E214-E219). WHO, through JECFA, has also evaluated these compounds, setting a similar ADI.
The overall safety assessment indicates that, at authorized doses, E219 does not pose a significant health risk. However, there are controversies regarding possible hormonal effects, although human studies have not confirmed relevant risks at dietary exposure levels. In food labeling, it must appear as 'sodium methylparaben' or its E number (E219).
E219 is mainly used in processed foods that require antimicrobial protection, especially in products with high water content and acidic pH. According to EC Regulation 1333/2008, it is authorized in the European Union for use in various food categories, such as soups and broths (except canned), emulsified sauces (mayonnaise, dressings), fruit jellies, jams and marmalades, fine bakery products (cakes, pastries), and flavored non-alcoholic beverages. Maximum limits vary by product, ranging from 500 to 1000 mg/kg.
In the Spanish market, it is found in mayonnaises, salad dressings, industrial jams, and some soft drinks. Compared to the US FDA, sodium methylparaben is considered GRAS (Generally Recognized as Safe) for use in foods, with similar limits. In Japan, its use is also permitted, although with stricter restrictions in some products.
It is important to note that E219 is often used in combination with other preservatives (such as sorbates or benzoates) to increase its effectiveness.
Documented side effects of E219 are rare and mainly limited to allergic reactions in sensitive individuals. Clinical studies have reported cases of contact dermatitis and urticaria following topical exposure to parabens, but allergy from oral ingestion is extremely rare. The biological mechanism involves parabens acting as haptens, binding to proteins and triggering an immune response in predisposed individuals. Sensitive populations include people with known allergy to parabens or with atopic dermatitis.
No significant interactions with medications have been documented. Regarding the controversy over possible endocrine-disrupting effects, in vitro studies have shown weak estrogenic activity, but EFSA concluded that at dietary exposure levels, no adverse effects in humans are expected. The established ADI (0-10 mg/kg/day) includes a wide safety margin. WHO also supports its safety at authorized doses.
In conclusion, for the general population, E219 is considered safe, although caution is recommended in individuals with known allergies.
- Sodium methylparaben
- Sodium methyl p-hydroxybenzoate
- Sodium methylparaben
- Methyl 4-hydroxybenzoate sodium salt
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