Ferric sodium edetate is a vital chelating agent capable of binding metal ions in solutions. This prevents discoloration, spoilage, turbidity, and the oxidative loss of vitamin C caused by metals. Trace metals such as iron and copper in oils promote oxidation, but ferric sodium edetate effectively enhances the oxidative stability of oils by chelating these ions.
Ferric sodium edetate is a stable chelate with high thermal resistance. It is not easily oxidized, retains its properties during storage, and does not impart a metallic or iron-like taste, ensuring good palatability. It is highly soluble in water (with a solubility of 100 g/100 ml at 25°C) and dilute acids, making it convenient for use in food and pharmaceutical applications.
Ferric sodium edetate is non-toxic and has no side effects. It is classified as "Generally Recognized as Safe" (GRAS). Its ligand, ethylenediaminetetraacetic acid (EDTA), poses no toxicity after releasing Fe³⁺ into the body. During absorption, EDTA can bind to harmful elements and expedite their excretion, offering protective benefits.
Ferric sodium edetate is an effective iron fortifier with optimal stability and dissolution properties.
Its iron absorption rate is 2–3 times higher than that of ferrous sulfate, and it rarely alters the color or taste of food.
It overcomes the inhibitory effects of phytates on iron absorption and promotes the uptake of other dietary or endogenous iron sources. Additionally, it enhances zinc absorption without negatively affecting calcium absorption.
Ferric sodium edetate is commonly used as an antioxidant and preservative in food processing.
It effectively extends shelf life and preserves the quality of food products by preventing oxidative reactions caused by metal ions.
Its stable chelate structure provides remarkable antioxidative performance, significantly improving the oxidative stability of oils and other foods.
Due to its stability and safety, ferric sodium edetate has broad application potential in the food and pharmaceutical industries. However, its usage levels and methods must align with specific product requirements and regulatory standards to ensure optimal performance and compliance.
Ferric sodium edetate is a highly versatile ingredient offering excellent chelation, antioxidative properties, and safety. These attributes make it a valuable addition to food preservation, iron fortification, and pharmaceutical formulations, with significant potential for future development and expanded applications.
