Ascorbyl Palmitate (E304)

Type of additive
(Glossary)
Antioxidants, Emulsifiers
E NumberE304
Chemical FormulaC22H38O7
Also Known AsL-Ascorbic acid 6-hexadecanoate
6-O-Palmitoylascorbic acid

Purpose and Function

Ascorbyl Palmitate (E304) are used in the food industry as antioxidants and sometimes as emulsifiers. They help prevent oxidation, thereby extending the shelf life of various food products and preserving their quality, including color and flavor. Their fat-soluble nature makes them particularly effective in products that contain fats or oils. Common applications include:

  • Oils and fats: Used to prevent rancidity in products like vegetable oils, margarine, and butter.
  • Baked goods: Helps maintain freshness in bread, cakes, and pastries that contain fat.
  • Snack foods: Added to items like chips and nuts to prevent oxidation of fats.
  • Chocolate and confectionery: Helps prevent the fat bloom and oxidation in chocolate and sweets.

The most common forms of E304 include ascorbyl palmitate and ascorbyl stearate, which are derived from combining ascorbic acid (vitamin C) with fatty acids.


Potential Risks and Side Effects

Fatty Acid Esters of Ascorbic Acid (E304) are generally considered safe when used within regulated limits, but there are a few considerations:

  • Allergic reactions: Although rare, some individuals may have sensitivities or allergic reactions to certain fatty acid esters.
  • High intake of fat-soluble additives: Since E304 is used in fatty foods, it may contribute to the overall fat content of the diet.
  • Regulatory approval: E304 is approved for use in many countries, including the European Union and the United States, where it is considered safe for use in food within specified limits.

Ascorbyl Palmitate (E304) are regarded as safe and effective antioxidants, especially in fat-containing products.