E389 – Dilauryl thiodipropionate
AntioxidantsDescription
White to off-white powder or flakes
Notes
Dilauryl thiodipropionate is a synthetic antioxidant that appears as white to off-white powder or flakes. It's created in laboratories by chemically combining lauryl alcohol (derived from coconut or palm oil) with thiodipropionate compounds. The "dilauryl" part refers to two lauryl chains, while "thiodipropionate" indicates the sulfur-containing backbone that gives this additive its antioxidant properties. This additive serves as a powerful antioxidant in foods, meaning it prevents fats and oils from going rancid by blocking the chemical reactions that cause spoilage. It's particularly effective at protecting foods from developing off-flavors and odors that occur when fats break down due to exposure to air, heat, or light. You'll typically find E389 in processed foods containing fats or oils, such as snack foods, fried products, and some packaged baked goods. As a synthetic compound, dilauryl thiodipropionate is generally suitable for vegetarians and vegans, since it doesn't contain animal-derived ingredients, though the source oils used in its production may vary. It's approved for use in foods within specific limits set by food safety authorities. While it's an effective preservative, some manufacturers are moving toward more natural antioxidant alternatives in response to consumer preferences for simpler ingredient lists.