Preparation method of feed-grade methionine hydroxy manganese chelate

Abstract

The invention relates to a production method of a feed additive, and particularly discloses a preparation method of a feed-grade methionine hydroxy manganese chelate. The preparation method includes the steps that firstly, a metered sodium hydroxide reagent is added into an inorganic salt water solution of manganese, and a solid substance is obtained; secondly, the solid substance is washed to remove soluble components in the solid substance; thirdly, water is added into washing residues for homogenization; fourthly, 2-hydroxy-4-(methylthio)butyric acid is added for a chelation reaction, wherein the molar ratio of manganese in the homogenate to 2-hydroxy-4-(methylthio)butyric acid is smaller than or equal to 0.5; fifthly, the reaction product is subjected to aftertreatment to obtain the product. The method has the advantages that the methionine hydroxy manganese chelate product with higher purity can be prepared, and the product is more suitable for serving as a feed additive; the chelation reaction rate is high, the energy consumption is low, the chelation reaction can be conducted at a high rate at the normal temperature, and the production method is simple and easy to popularize in the industry.

Description

technical field [0001] The invention relates to the field of animal breeding, in particular to a preparation method of a feed additive. Background technique [0002] The main nutritional and physiological role of the trace element manganese is as an enzyme activator or component in the metabolism of carbohydrates, lipids, proteins and cholesterol. Manganese can participate in the transmission of central nervous media and the energy supply of central nervous cells, and it is an essential substance to maintain the normal metabolic function of the brain. If the animal is deficient in manganese, it can lead to decreased food intake, slowed growth, bone abnormalities, ataxia, and unresponsiveness and reproductive abnormalities. In addition, the synthesis of thyroid must be catalyzed by the enzyme that activates manganese. Manganese ions also have a lot to do with the color of the hair. If the hair is bright, it may contain enough manganese, and if the hair is dull, it may be de...

AI Technical Summary

Problems solved by technology

The method is to first generate hydroxymethionine potassium through the reaction of hydroxymethionine and potassium carbonate, and then undergo a displacement reaction between hydroxymethionine potassium and manganese acetate tetrahydrate to separate the hydroxymethionine manganese through the precipitation solution system. Therefore, the method takes a long time and can The consumption is high, and it is easy to cause manganese hydrolysis to produce manganese oxide, resulting in impurities mixed into the product. However, this method has no corresponding impurity removal method, cannot guarantee product quality, and is difficult to promote in the industry

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