14281-83-5Relevant articles and documents
The inhibitory effect of the amino acid complexes of Zn(II) on the growth of Aspergillus flavus and aflatoxin B1 production
Daryanavard, Marzieh,Jarrah, Nafiseh
, p. 1053 - 1060 (2019/04/10)
The zinc(II) complexes with amino acids as the ligands, Zn(Gln)2 (1), [Zn(Arg)2(OAc)]OAc·3H2O (2), Zn(His)2 (3), Zn(Gly)2 (4), Zn(Met)2 (5), and Zn(Cys)2 (6) (Gln = glutamine, Arg = arginine, His = histidine, Gly = glycine, Met = methionine, and Cys = cysteine) have been synthesized in aqueous solutions and characterized by elemental analysis and spectroscopic methods. In addition, the solid-state structure of 1 and 2 has been determined by single-crystal X-ray crystallography. X-ray analysis revealed that the central Zn(II) atom is six- and five- coordinated in 1 and 2, respectively. Furthermore, the antifungal activity of the synthesized complexes was investigated against the Aspergillus flavus fungus. The aqueous solutions of the zinc(II) amino acid complexes at various concentrations were added to the potato dextrose agar (PDA) medium containing spores of Aspergillus flavus, and the mixtures were then incubated at 25–30?°C for 6 days. The aflatoxin B1 produced in vitro was measured using enzyme-linked immunosorbent assay (ELISA). The increasing concentration of these complexes decreased the growth of Aspergillus flavus and aflatoxin B1 production, consequently. Furthermore, the results showed that the synthesized Zn(II) amino acid complexes are more antifungal active than the zinc(II) ion.
Preparation method of glycine zinc complex
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Paragraph 0037; 0038, (2017/07/01)
The invention provides a preparation method of a glycine zinc complex. The preparation method comprises the steps of dissolving glycine and zinc sulfate heptahydrate into water, adding a small amount of iron powder and multiple drops of concentrated sulfuric acid, rotationally reacting at 70-90 DEG C, cooling to a temperature of 50-65 DEG C, carrying out crystallization and suction filtration to obtain crystalline solids, washing the crystalline solids for several times with absolute ethyl alcohol, and naturally airing, so as to obtain the glycine zinc complex. According to the preparation method, the crystallization temperature is 50-65 DEG C and is 25 DEG C higher than that of an existing method, so that the time consumed in a cooling crystallization process is shortened, and the cooling energy consumption is reduced; and meanwhile, the glycine zinc complex prepared by virtue of the preparation method is high in yield and contains a small amount of crystal water, and the subsequent drying energy consumption is low.
Zn[aminoacid]2 hybrid materials applied as heterogeneous catalysts in the synthesis of β-enaminones
Winck, Cristiane R.,Darbem, Mariana P.,Gomes, Roberto S.,Rinaldi, Andrelson W.,Domingues, Nelson Luís C.
supporting information, p. 4123 - 4125 (2015/02/02)
Hybrid materials have seized attention from scientific community mainly as heterogenic catalysts in organic reactions on a large scale succeeding in some organic compounds with high yields. One of the most important classes of hybrid materials used for this purpose involves the complexation of Zn and aminoacids. Herein, we introduced Zn[Pro]2 and Zn[Gly]2 in the synthesis of several β-enaminones via solvent free protocol and using an ultrasound device.
Non-GMO metal amino acid chelates and non-GMO metal amino acid chelate-containing compositions
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Page/Page column 5, (2008/06/13)
Non-GMO metal amino acid chelate compositions, non-GMO formulations containing non-GMO metal amino acid chelates, methods of preparing non-GMO metal amino acid chelates, and methods of administering non-GMO metal amino acid chelates are provided. Specifically, the present invention provides a non-GMO metal amino acid chelate composition, comprising amino acid chelates having a naturally occurring amino acid to metal molar ratio of from about 1:1 to 4:1, wherein both the amino acid and the source of the metal used to form the amino acid chelate are non-GMO.
