E311 - Octyl gallate

Origin

Octyl gallate is a synthetic antioxidant derived from gallic acid and octanol. Gallic acid is a naturally occurring organic acid found in many plants, while octanol is an eight-carbon alcohol. The esterification of gallic acid with octanol produces octyl gallate.

Usage

Octyl gallate is primarily used as an antioxidant in food products to prevent rancidity and extend shelf life. It is particularly effective in preventing the oxidation of fats and oils. Common applications include vegetable oils, margarine, shortenings, and fried foods. The typical usage levels are relatively low, usually ranging from 0.01% to 0.02% of the fat content. It can also be found in some packaging materials to prevent oxidation of the food in contact with the packaging. Octyl gallate is also used in cosmetics and pharmaceuticals as an antioxidant.

Side Effects

Octyl gallate is generally considered safe for consumption at the levels typically used in food. The Scientific Committee on Food (SCF) and the European Food Safety Authority (EFSA) have evaluated gallates, including octyl gallate. While some studies have suggested potential allergenic reactions in sensitive individuals, these are rare. The Acceptable Daily Intake (ADI) for gallates (including propyl, octyl, and dodecyl gallates) is set at 0-0.5 mg/kg body weight by EFSA. High doses may cause mild gastrointestinal distress, but these effects are unlikely at normal consumption levels.

Regulatory Status

Octyl gallate (E311) is permitted for use as a food additive in many countries, including those in the European Union. Its use is regulated by specific legislation that defines the foods in which it can be used and the maximum permitted levels. In the United States, gallates are generally recognized as safe (GRAS) when used in accordance with good manufacturing practices. The regulatory status may vary slightly from country to country, so it's essential to consult local regulations for specific details.