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527-09-3
futurechemical
527-09-3
project | information |
Chinese name | Copper gluconate |
English name | Copper(II) gluconate/Cupric gluconate |
Molecular formula | C₁₂H₂₂CuO₁₄ |
molecular weight | 453.84 |
CAS number | 527-09-3 |
Appearance | Pale blue powder—the only colored member of the gluconate family. |
Solubility | Soluble in water |
Copper content | Approximately 14.0% (based on Cu) |
Copper's physiological functions are all behind the scenes—without it, iron metabolism stops, collagen cross-linking breaks down, and nerve myelin sheaths detach. From a food nutrition perspective, copper is an element that must be considered in iron-fortified foods. In staple food fortification and infant formula—adding only iron without copper—may lead to an iron-copper imbalance in the body—because high iron intake competes with copper absorption channels in the intestines.
Food categories | Add necessity | Advantages of copper gluconate |
Infant formula | Legally required addition – simulated breast milk copper | Organic and mild – ligand protection prevents lipid oxidation |
sports drinks | Sweat contains trace amounts of copper – micronutrient supplementation | Dissolves completely and is transparent – with no visible color and no metallic taste. |
Fortified flour and grains | Public health iron fortification should consider copper balance | Organic sources have less antagonism with inorganic iron. |
Baby food/rice cereal | Copper sources for the transition from breast milk to solid foods | Gentle – suitable for infants' immature digestive systems |
The practical significance of "ligand protection"
The encapsulation of Cu²⁺ ions by gluconate in food matrices—meaning that copper ions do not exist in a free form—but are "held" by organic ligands. This subtle chemical difference has significant consequences in food processing: free Cu²⁺ is a powerful oxidizing agent—catalyzing the oxidation and rancidity of fats and accelerating the decomposition of vitamins. The ligand-complexed state of copper gluconate—significantly reducing the catalytic activity of copper oxidation—is one of the only copper sources that does not "cause trouble" in food matrices containing fats and vitamins.
In some large-scale industrial formulations, copper gluconate is not used alone:
Copper gluconate + copper sulfate: Copper sulfate provides a high density of copper (reducing costs), while copper gluconate provides mild ligand protection—balancing safety and economy in infant formula and special medical foods;
Copper gluconate + copper carbonate: The rate of Cu²⁺ release varies under different pH conditions – a multi-source copper system.
Copper(II) gluconate plays a quiet but indispensable role in the food fortification spectrum. It's not the most prominent trace element (iron is), nor is it the most closely watched (zinc and calcium are)—but it is the most "chain reaction" of all trace elements:
Scene | What is it doing? |
Each can of infant formula | With a quantity less than one percent of a grain of rice—protecting the first line of defense for iron metabolism. |
Each bag of enteral nutrition formula | Let it stand in the liquid for months—without oxidation—until it is pumped into the tube. |
Each bottle of sports drink | Completely invisible in a transparent liquid—the lost copper is replenished when you're drenched in sweat. |
Next to each iron supplement | When iron supplementation fails—and here's the silent solution—"It's not an iron deficiency, it's a copper deficiency." |
Chemically, copper gluconate is pale blue. But in the final product of food—whether it's white milk powder, a clear beverage, or beige rice noodles—you'll never see that blue. It hides within the embrace of gluconate ligands—silently entering the body and quietly handing over the key at the crossroads of iron metabolism.
