Method for producing amino acid chelate iron

Abstract

The invention relates to a method for producing amino acid chelate iron, and belongs to the field of chelate iron. The technical problem to be solved of the invention is to provide a low-cost method for producing amino acid chelate iron. The method for producing the amino acid chelate iron comprises the following steps: a, hydrolyzing keratin by using strong acid to obtain solution of amino acid; b, reacting carbonate and / or bicarbonate with solution of strong acid ferrite to obtain a precipitate, adding a proper amount of iron powder into the precipitate, then adding the solution of amino acid prepared by the step a into the mixture for reaction, and adjusting the pH value of the reacted solution to be 2.5 to 5.5; and c, filtering, then concentrating and drying the filter liquor to obtain the amino acid chelate iron. The method of the invention reduces the production cost of high-content amino acid chelate iron, has simple used device and few processing steps, fully meets the requirements of industrial big production, provides a new method for producing the high-content amino acid chelate iron, and has wide application prospect.

Description

technical field

[0001] The invention relates to a method for producing amino acid chelated iron, belonging to the field of chelated iron. Background technique

[0002] Amino acid chelated iron has a wide range of applications in health care products, food, feed, pesticides and other fields. Since ferrous oxide and ferrous carbonate do not exist in nature under normal circumstances, ferric oxide cannot be chelated with amino acids because it is ferric ion, and the substitution reaction time directly by iron filings and strong acid is too slow. Therefore, the current process for producing common amino acid chelated iron is: neutralize the hydrolyzed amino acid solution with sodium carbonate, sodium hydroxide, ammonium bicarbonate or ammonia water to neutrality, then add ferrous sulfate or ferrous chloride for chelation Get it together. But above-mentioned method additionally produces a large amount of salts such as sodium chloride, ammonium chloride, sodium sulfate or ammoni...