Ferrous gluconate is a bioavailable form of iron used in food fortification, dietary supplements, and as a coloring agent in olives. With the chemical formula C12H22FeO14 (often supplied as the dihydrate, C12H26FeO16), it appears as a pale greenish-yellow to yellowish-grey powder or granules with a faint odor of burnt sugar. For kosher food manufacturers and supplement companies, sourcing ferrous gluconate with proper certification is a routine but necessary step.
The kosher supplement market has grown significantly, with brands like Landau offering kosher iron ferrous gluconate tablets at 27 mg per serving. This demand extends to bulk ingredient suppliers who must provide certified ferrous gluconate for manufacturing.
Kosher Status of Ferrous Gluconate
Ferrous gluconate is produced by reacting iron with gluconic acid, which is typically derived from glucose through fermentation or oxidation. The glucose source and fermentation process are the primary points of kosher evaluation. Glucose derived from corn or other plant sources is generally unproblematic, but the fermentation media and processing aids require verification by a certifying agency.
The iron component itself does not present kosher concerns, as mineral salts are inherently kosher. However, shared production equipment and auxiliary ingredients used during manufacturing can introduce issues that only a proper kosher audit can identify and resolve.
USP Grade for Food and Supplement Use
Ferrous gluconate meeting USP (United States Pharmacopeia) standards is the preferred grade for both food fortification and dietary supplements. Their product undergoes testing for oxalic acid content, reducing sugars, TLC identification, and positive identification for ferrous iron.
The USP designation confirms the product meets rigorous purity and identity standards suitable for ingestion.
Handling and Storage Considerations
Ferrous gluconate is sensitive to both light and air exposure. The ferrous ion slowly oxidizes when exposed to air, potentially affecting both the quality and color of the product. Proper storage in sealed containers away from direct light helps maintain product integrity and extends shelf life.
Kosher manufacturers should ensure that storage conditions do not compromise the certified status of the ingredient. Dedicated storage areas or clearly labeled containers prevent cross-contamination with non-certified materials in shared warehouse environments.
Applications in Kosher Products
In the dietary supplement market, kosher ferrous gluconate tablets are available from brands like Landau in 100-count and 250-count bottles. The ingredient is favored for iron supplementation because ferrous gluconate is generally well tolerated and causes fewer gastrointestinal side effects compared to other iron salts like ferrous sulfate.
Food manufacturers use ferrous gluconate to fortify cereals, flour, and infant formulas with iron. It also serves as a colorant in ripe olives, where it contributes to the characteristic black color. Each application requires that the ferrous gluconate source carries valid kosher certification.
Kosher Ferrous Gluconate Supplier
We supply bulk food-grade ferrous gluconate from top manufacturers in China. We help you handle the entire bulk ingredients sourcing process in China: manufacturer selection (top Chinese food ingredients manufacturers), price negotiation, quality verification, and logistics coordination.
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