Iron(II) reactions with glycine – suitable biomineralization model?

Authors

  • Katarína Mitaľová Department of Chemistry, Faculty of Natural Sciences, University of SS. Cyril and Methodius in Trnava
  • Dušan Valigura

DOI:

https://doi.org/10.36547/nbc.880

Keywords:

Iron biomineralization, Iron(III) oxide formation, Iron(II) salts

Abstract

The reactions of Mohr’s salt with amino acid glycine in aqueous solution and aerobic conditions were studied and obtained samples consist of different compounds. The obtained products were characterized by elemental analysis, infrared spectroscopy and the iron determination also and exhibited very low organic matter content – the sum of N, C, H and S content less than 20 % and Fe content around 40 %. Prepared samples consist of iron(II) amino acid complex [Fe(glyH)(SO4)]n, known as iron food supplement (FeGS) as the only sulphur containing compound. Its content varies from 26 % up to 46 %. Ferrous glycinate was obtained in the samples collected initially after the reaction in very low content < 7 %. Iron(III) hydroxy-oxide FeO(OH) was obtained in the range 40 – 65 %. The FeO(OH) content increased with the decreasing FeGS content. Formation of inorganic FeO(OH) suggest the ongoing redox reaction under aerobic condition therefore, it is suggested as a biomineralization reaction model.

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Published

2021-06-23

How to Cite

Katarína Mitaľová, & Dušan Valigura. (2021). Iron(II) reactions with glycine – suitable biomineralization model?. Nova Biotechnologica Et Chimica, 20(1), e880. https://doi.org/10.36547/nbc.880

Issue

Section

Research Articles
Received 2021-02-24
Accepted 2021-04-21
Published 2021-06-23