Prepn process of amino acid-calcium chelate

Abstract

The present invention discloses preparation process of amino acid-calcium chelate. Through converting strong acid type cationic exchange resin into calcium type with calcium ion, reacting in column with mixed solution of leucine and sodium hydroxide in the molar ratio of 1 to 0.5-2 at normal temperature, collecting the effluent at the flow rate of 0.05-1 BV / hr, and vacuum concentration to crystallize leucine-calcium chelate. The leucine-calcium chelate has high water solubility, high absorption rate, no stimulation to gastrointestinal tract and other features, and can meet the requirement of human body in replenishing calcium and amino acid. The preparation process has the advantages of low production cost, high conversion rate and high product purity, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a method for producing an amino acid chelated calcium by using leucine and calcium chloride as main raw materials, which belongs to the method for synthesizing organic calcium by ion exchange. Background technique [0002] Calcium is the most abundant mineral element in living organisms. In addition to being a component of the body's bones and teeth, calcium also participates in various physiological activities and plays an extremely important role in the life activities of living things, especially chickens, ducks, geese, etc. Animals need a lot of calcium supplementation during spawning. At present, calcium additives in the domestic market mainly fall into the following three categories from the perspective of calcium source composition: (1) Products based on inorganic salts, such as mineral calcium carbonate, chemically synthesized calcium carbonate, calcium hydrogen phosphate, calcium chloride, etc.; 2) Products based on c...

AI Technical Summary

Problems solved by technology

[0003] At present, there are mainly two kinds of production methods of amino acid chelated calcium: one is to directly mix amino acid and calcium source in water to carry out complexation reaction to obtain amino acid chelated calcium, which has the disadvantages of low complexation rate and low product purity; the other One method is to apply external work in the above mixing process, such as microwave or ultrasonic wave of a certain frequency, which improves the complexation rate of the reaction, but limits its industrialized mass production due to the high process cost