Technical SolutionĪn object of the present disclosure is to provide a method for preparing a methionine-metal chelate, comprising mixing methionine and Ca(OH) 2 and adding metal nitrate to the mixture to produce a methionine-metal chelate.Īnother object of the present disclosure is to provide a methionine-metal chelate prepared by the preparation method above. DISCLOSURE Technical ProblemĪs a result of making intensive efforts to find ways to produce methionine-metal chelates with high efficiency, the present applicant confirmed that the preparation method of the present disclosure does not generate insoluble salts and has an effect of greatly improving the recovery rate of the desired methionine-metal chelate, and that Ca(NO 3) 2 which is generated as a by-product can be used as a liquid fertilizer or as a solid fertilizer after granulation, thereby completing the present disclosure. However, ions present in the metal salts used in these methods, such as sulfate ions, etc., have a disadvantage of forming a by-product such as insoluble salts or lowering the yield by interfering with the chelate bond between methionine and the metal. 10-0860778), a preparation method of methionine-iron chelate by reacting an inorganic iron solution and a methionine solution at a predetermined temperature and pH (Korean Patent No. 10-0583274), a preparation method of yeast-mineral chelate by using a yeast liquid and mineral sulfate (Korean Patent No. 6,710,079), a preparation method of methionine-mineral chelate by mixing a methionine solution and a mineral solution to which a basic substance is added (Korean Patent No. 7,087,775), a preparation method of methionine-zinc chelate by simultaneously reacting methionine with calcium hydroxide and sulfur zinc sulfate (U.S. Studies are in progress on amino acid-metal chelates, which have relatively high absorption rates in the body.įor example, there are a preparation method of methionine-zinc chelate by mixing methionine with zinc chloride and then adding NaOH (U.S. Representative product groups of such organic trace minerals are amino acid-metal complexes and amino acid-metal chelates. Therefore, in recent years, the supply of inorganic trace minerals has been limited, such as establishing a legal limit of mineral contents in feed to prevent heavy metal pollution in the environment.Īs such, the use of organic trace minerals has been suggested as an alternative, because the absorption rate is high even with using a low amount, which can satisfy the metabolic capacity and reduce the excretion amount. Therefore, inorganic trace minerals are being supplied in excess of actual livestock demands, and excess minerals that are not absorbed by living organisms are excreted in powder and are reduced to soil, causing deep soil contamination. However, when minerals are ingested in the inorganic form, such as metal oxides or metal salts, dissociated metal elements can form complexes with other elements competitively, and thus, there is a disadvantage that absorption is inhibited. Since such mineral components including zinc cannot be synthesized in the body, proper supply from the outside is necessary, and in the case of livestock, they are provided by combining these ingredients in feeds. For example, zinc is an essential material for the growth of livestock and contributes to boosting immunity. BACKGROUND ARTĪlthough making up a very small proportion in animal tissues, mineral components such as zinc (Zn), manganese (Mn), copper (Cu), iron (Fe), etc., perform various physiological functions such as forming a skeleton, regulating osmotic pressure in the body, maintaining acid-base equilibrium of body fluids, being involved in the activity as an active agent of the enzymatic system or as a component of enzymes themselves, etc. The present disclosure relates to a methionine-metal chelate and a preparation method thereof. 2017, the entire disclosures of which are herein incorporated by reference. 2018, which claims priority to Korean Patent Application No. National Stage application of PCT/KR2018/007690 filed 6 Jul.

Metal ion bonding methionine