E309 - Delta-tocopherol

Origin

Delta-tocopherol is a naturally occurring form of vitamin E. It is primarily derived from vegetable oils, such as soybean oil, rapeseed oil, and corn oil. It can also be obtained from nuts and seeds. Commercially, it is often extracted and purified from vegetable oil distillates, which are by-products of the oil refining process. Synthetic delta-tocopherol is also available, though less common than the natural form.

Usage

Delta-tocopherol is used as an antioxidant in food products. Its primary function is to prevent or delay the oxidation of fats and oils, thereby extending the shelf life of food and preventing rancidity. It is particularly effective in stabilizing polyunsaturated fatty acids. Delta-tocopherol can be found in a variety of foods, including vegetable oils, margarine, salad dressings, baked goods, processed meats, and dietary supplements. It is also used in cosmetics and pharmaceuticals for its antioxidant properties.

Side Effects

Delta-tocopherol is generally considered safe for consumption at levels typically used in food. The EFSA (European Food Safety Authority) has established an Acceptable Daily Intake (ADI) for tocopherols (including delta-tocopherol) as 0.15-2 mg/kg body weight per day. High doses of vitamin E supplements (well above the levels found in food) have been associated with potential adverse effects, such as increased risk of bleeding, particularly in individuals taking anticoagulant medications. However, these effects are usually associated with alpha-tocopherol, the most biologically active form of vitamin E, rather than delta-tocopherol. Allergic reactions to tocopherols are rare but possible.

Regulatory Status

Delta-tocopherol (E309) is approved for use as a food additive in the European Union. It is also permitted for use in food in many other countries, including the United States. In the US, tocopherols are Generally Recognized As Safe (GRAS) by the FDA when used in accordance with good manufacturing practices. Regulations specify the types of food in which it can be used and the maximum permitted levels.