EPR and Mössbauer spectroscopic studies on metal complexes of pectic acid and their derivatives

✍ Scribed by B. Lakatos; J. Meisel; A. Rockenbauer; P. Simon; L. Korecz

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 205 KB
• Volume: 79
• Category: Article
• ISSN: 0020-1693
• DOI: 10.1016/s0020-1693(00)95314-3

✦ Synopsis

Foods are more and more deficient in Mg and trace metals, due to the use of increasing amounts of NPK fertilisers, liming and high costs of trace metal fertilization as well as to the purification and refinement of raw nutriments.

Recently, for the substitution of these metals, instead of inorganic salts or artificial metal chelates, metal complexes of biopolymers have been used [ 11, which, administered per OS to vertebrates, can be absorbed and utilized without harmful side effects. Metal bonds in biopolymers are presumably similar to those in foods, and therefore will be studied by EPR and Mossbauer spectroscopy. Compound FeS04 .7H20 Fe(II)alginate Fe(PA)a Fes[PA(SO&la FelPA(NOs)212 Fe(II)-Dowex-Al Chelating Resin Fe(PA)s Znorganica Chimica Acta, 19 (1983) iron(III)complexes show inner-sphere coordination

TABLE I. Characteristic IR Absorption Frequencies of Pectic with polynuclear structure [7,8]. Acid and Dehydrated Metal Pectates.

The structure of inner-sphere complexes will be studied by IR spectroscopy (see next paper).