Ferrous Gluconate
Ferrous gluconate, the molecular formula is C12H22O14Fe·2H2O, and the relative molecular mass is 482.18. It can be used as a color protectant and nutritional fortifier in food. It can be made by neutralizing gluconic acid with reduced iron. Ferrous gluconate is characterized by high bioavailability, good solubility in water, mild flavor without astringency, and is more fortified in milk beverages, but it is also easy to cause changes in food color and flavor, which limits its application to a certain extent.
nature
Ferrous gluconate is yellow-gray or light yellow-green crystal particles or powder with a slight caramel smell. It is soluble in water, 5% aqueous solution is acidic, almost insoluble in ethanol, the theoretical iron content is 12%. Ferrous gluconate is easily absorbed, has no irritation to the digestive system, no side effects, and has no effect on the sensory performance and flavor of food. At the same time, it can be used as a medicine to treat anemia.
Identification method
(1) Add 0.65 mL of glacial acetic acid and 1 mL of freshly distilled phenylhydrazine to 5 mL of warm 10% sample solution, heat it on a steam bath for 30 minutes, scrape the inner wall of the container with a glass rod after cooling, and produce phenylhydrazine gluconate crystallization.
(2) 5% of this product solution is ferrous salt reaction (see identification method of ferrous sulfate).
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