Synthesis, characterization and biological activity of chelated minerals

Cobalt, Copper and Zinc complexes of amino acids [lysine and glycine] were prepared and characterized by IR, electronic absorption spectra, elemental analysis, magnetic susceptibilities, the differential thermal analysis [DTA] and thermal gravimetric analysis [TGA] of the complexes pointed to their stability. The thermodynamic parameters of the dissociation steps are evaluated. The metal chelates and ligands have been screened for their invitro antibacterial against. Bacillus cereus, Salmonella yeast, E-coli and Staphylococcus. The metal complex [copper glycine] was shown to posses more antibacterial activity than the unchelated ligands. The adsorption ability of complexes to aflatoxin has been studied

Suplementos nutricionales orales a base de nuevos complejos de cobre, magnesio, manganeso y zinc

Suplementos nutricionales orales a base de nuevos complejos de cobre, magnesio, manganeso y zinc Los oligoelementos cobre, magnesio, manganeso y zinc intervienen en numerosos procesos metabólicos, enzimáticos, inmunológicos y tisulares, forman parte estructural de proteínas y pueden participar en la regulación de la expresión genética. La deficiencia de estos elementos esenciales dificulta el apropiado funcionamiento del organismo e induce el desarrollo de diversas enfermedades. Se debe garantizar la incorporación de oligoelementos a través de la dieta; sin embargo, la cantidad suministrada no siempre es suficiente y el uso de suplementos nutricionales convencionales presenta dos problemas; el primero se atribuye a la asociación de los metales a sales inorgánicas que generan una baja absorción e intolerancias a nivel gástrico y el segundo corresponde a las interacciones antagonistas entre diversos metales componentes de la formulación. Como una alternativa a los problemas mencionados, en este trabajo se propone la elaboración de tabletas para la administración oral de nuevos complejos de cobre, zinc, magnesio y manganeso ligados a los aminoácidos glicina y asparagina. En la síntesis de estos complejos, cada ligando se unió a duplas de cationes no antagonistas, se verificó la formación de los complejos por espectroscopía infrarroja, calorimetría de barrido diferencial, análisis termogravimétrico y difracción de rayos X de polvos, y se determinaron los tiempos de desintegración y de disolución in-vitro a las formas farmacéuticas finales.

Oral dietary supplements with copper, magnesium, manganese and zinc-based new complexes Oligoelements such as copper, magnesium, manganese and zinc are involved in several metabolic, enzymatic and immunological processes. They are also important for the integral tissue proteins and could be involved in gene expression regulation. The deficiency of these essential elements hampers the appropriate function of the body and may cause various diseases. Therefore, it is important to guarantee the incorporation of these trace elements in the diet, but the quantity provided is not always adequate for the optimum body performance. Currently, conventional nutritional supplements have two major problems. The first one is attributed to the association of inorganic salts with metals which might cause low absorption and gastric intolerance. The second problem is caused when several metals are present in a formulation which could lead to possible antagonistic interactions. For this reason, this study explores the development of cations (i.e., copper, zinc, magnesium and manganese) and amino acids (i.e., glycine and asparagine) new complexes formulated into compacts for oral administration. In each reaction, ligands were linked to non-antagonistic cation pairs. The complex formation was characterized by infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis and powder X-ray diffraction analyses. Compact disintegration and in-vitro dissolution tests for these complexes were also determined.