Benzoate de Sodium

Origin

Sodium benzoate is the sodium salt of benzoic acid. It's a synthetic compound produced by reacting benzoic acid with sodium hydroxide. Benzoic acid occurs naturally in some fruits (like cranberries, plums, and apples) and spices (like cloves and cinnamon), but the sodium benzoate used as a food additive is typically manufactured.

Usage

Sodium benzoate is primarily used as a preservative in food and beverages. It inhibits the growth of bacteria, yeast, and molds, extending the shelf life of products. It is most effective in acidic conditions (pH below 4.5). Common applications include carbonated drinks, fruit juices, pickles, salad dressings, jams, jellies, sauces, and condiments. It is also used in some pharmaceuticals and cosmetics as a preservative. The typical concentration used in food ranges from 0.05% to 0.1%.

Side Effects

Sodium benzoate is generally considered safe for consumption in the amounts typically used in food. The Joint FAO/WHO Expert Committee on Food Additives (JECFA) has established an Acceptable Daily Intake (ADI) of 0-5 mg/kg body weight. Some studies have linked sodium benzoate to hyperactivity in children, particularly when combined with artificial food colors. However, the evidence is not conclusive, and further research is needed. In rare cases, some individuals may experience allergic reactions to sodium benzoate. When combined with ascorbic acid (vitamin C) in beverages, sodium benzoate can potentially form benzene, a known carcinogen. However, manufacturers typically monitor and control benzene levels to ensure they remain within safe limits.

Regulatory Status

Sodium benzoate is approved for use as a food additive in many countries, including the United States, Canada, the European Union, and Australia. Regulations vary by country regarding the specific foods in which it can be used and the maximum permitted levels. In the United States, it is Generally Recognized as Safe (GRAS) when used in accordance with good manufacturing practices. In the EU, it is designated as E211.