Technology research on the preparation of calcium complex amino acid chelate from animal feathers and soybean meal
Compounds of amino acid chelated calcium was prepared from animal feathers and soybean meal,respectively.The effects of material ratio,pH,chelation temperature and chelation time on the chela-tion rate.Solid calcium chelates of complex amino acids were prepared by leaching with organic solvents and titrated for calcium chelate content by EDTA method.The results showed that the highest chelation rate of 92.30%was achieved when the ratio of the substance amounts of compound amino acid powder and calcium chloride for animal feathers was 2∶1,the chelating temperature was 60℃,the chelating process was lasted 5.5 h,and the pH of the system was 10.5.The highest chelation rate of 83.08%was achieved when the ratio of the substance amount of soybean meal compound amino acid powder and calci-um chloride was 2.5∶1,the chelation temperature was 60℃,the chelation time was 5 h,and the pH of the system was 10.5.The result shown that the animal feather complex amino acids were more easily che-lated with calcium.
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