Fumarate iron
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Fumarate Iron: Bioavailability, Efficacy, and Applications
Bioavailability of Ferrous Fumarate vs. Ferrous Sulfate
Comparative Absorption in Different Populations
Ferrous fumarate is often compared to ferrous sulfate for its bioavailability and efficacy in iron supplementation. Studies have shown that ferrous fumarate is absorbed as well as ferrous sulfate in non-anemic, iron-sufficient infants, young children, and adult women. In a study involving non-anemic Mexican women and children, no significant differences in iron absorption were found between ferrous fumarate and ferrous sulfate, with relative bioavailability values close to 100% in all groups . This suggests that ferrous fumarate can be a suitable alternative to ferrous sulfate for fortifying complementary foods aimed at preventing iron deficiency.
Efficacy in Treating Iron Deficiency Anemia
In pregnant women with iron deficiency anemia, intravenous iron sucrose was found to be more effective than oral ferrous fumarate in increasing hemoglobin and serum ferritin levels. The study reported a significantly higher increase in hemoglobin and ferritin levels in the intravenous group compared to the oral group, indicating that intravenous iron sucrose may be a better option for rapid correction of anemia in pregnancy .
Enhancing Iron Absorption
Role of Juices in Iron Absorption
The absorption of ferrous fumarate can be influenced by the type of juice consumed with it. A study on small children found that orange juice, which contains ascorbic acid, significantly enhanced the absorption of ferrous fumarate compared to apple juice, which lacks ascorbic acid. The presence of ascorbic acid in orange juice increased iron absorption from 5.5% to 8.2%, demonstrating the importance of dietary factors in optimizing iron absorption from supplements .
Applications Beyond Supplementation
Use in Li-ion Batteries
Iron fumarate has also been explored as an anode material for lithium-ion batteries. Its inherent low cost and eco-friendliness, combined with the ability to accommodate volume changes during charge-discharge cycles, make it a promising candidate. The addition of conductive Fe2P has been shown to improve the bulk electronic conductivity, resulting in excellent structural stability and high capacity retention over multiple cycles .
Intracellular Delivery of Biomolecules
Iron-fumarate nanoparticles have been developed for the protective encapsulation and intracellular delivery of proteins and nucleic acids. These nanoparticles can preserve the activity of sensitive biomolecules such as Cas9/sgRNA ribonucleoproteins, even under challenging conditions. This makes iron-fumarate nanoparticles a versatile platform for delivering functional proteins into cells while protecting them from degradation .
Conclusion
Ferrous fumarate is a versatile iron compound with applications ranging from dietary supplementation to advanced technological uses. Its bioavailability is comparable to ferrous sulfate in non-anemic populations, and it can be effectively used in food fortification to prevent iron deficiency. However, for treating iron deficiency anemia, especially in pregnancy, intravenous iron sucrose may offer superior efficacy. Additionally, iron fumarate's potential in enhancing battery performance and delivering biomolecules highlights its broad utility beyond traditional supplementation. Further research is needed to optimize its use in various applications and to understand the factors influencing its efficacy in different populations.
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