Preparation, structural characterization and biological evaluation of l-tyrosinate metal ion complexes

Refat, Moamen S.; El-Korashy, Sabry A.; Ahmed, Ahmed

doi:10.1016/j.molstruc.2007.08.027

Cited by 26 publications

(18 citation statements)

References 35 publications

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“…They found that Co-SIM exhibited higher biocidal activity towards S. cerevisiae, P. putida and E. coli than Ag-TAZ, however, although a high biocidal effect towards both cyanobacteria was found, the results showed that it was not effective towards the green alga Chlamydomonas at the concentration tested. Other authors (Refat et al, 2008;Wojciechowska et al, 2012) have investigated the biological activities of Zn based complexes, specifically, in the case of L-tyrosinate Zinc(II) complex, Refat et al (2008) found moderate activity of this complex against E. coli but strong activity against Bacillus subtilis, Serratia and Pseudomonas aeruginosa. Wojciechowska et al (2012) incorporated ligand modifications to these Ltyrosinate complexes, as a molecule of secondary ligand such as 2,2′-bipyridine or imidazole.…”

Section: Inhibition Zone Testing Bioassaymentioning

confidence: 99%

Co, Zn and Ag-MOFs evaluation as biocidal materials towards photosynthetic organisms

Martín-Betancor

Aguado

Rodea-Palomares

et al. 2017

Science of The Total Environment

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In the present study, the biocidal activity of three different metal organic frameworks (MOFs) based on Co (Co-SIM1), Zn (Zn-SIM1) and Ag (Ag-TAZ) has been evaluated towards one green alga and two cyanobacteria. These organisms are present in fresh- and seawater and take part in the early stages of the biofouling process. The biocidal activity of these materials was evaluated by measuring chlorophyll a concentration and by inhibition zone testing. After 24h of exposure the three different MOFs caused >50% of chlorophyll a concentration inhibition towards both cyanobacteria, however, although the green alga presented a great sensitivity for Ag-TAZ (reaching 90% of chlorophyll a concentration inhibition), it was much more resistant to the rest of MOFs. Bioavailability of these metals was studied using ICP-MS, the chemical speciation program Visual MINTEQ, and a heavy metal bioreporter bioanalytical tool. We have elucidated that the biocidal activity presented by these MOFs was due to the dissolved metals released from them and more exactly, it depended on the bioavailability presented by these metal ions, which was closely related with the free ion concentration. This article highlights the potential use of different MOFs as biocidal material towards photosynthetic organisms and reveals important differences in the sensitivity between these organisms that should be taken into account in order to increase the biocidal spectrum of these materials.

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Section: Inhibition Zone Testing Bioassaymentioning

confidence: 99%

Co, Zn and Ag-MOFs evaluation as biocidal materials towards photosynthetic organisms

Martín-Betancor

Aguado

Rodea-Palomares

et al. 2017

Science of The Total Environment

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“…L-Tyrosine (Scheme 1), one of the 20 natural amino acids, the molecule is interesting by its wide application. This molecule is a constituent of many blocks of proteins and plays an important role as a precursor of neurotransmitters like dopamine, adrenaline or noradrenaline [24,25]. Because of its good coordination properties, L-Tyr and its derivatives can bind various metal ions, forming complexes in solution as well as in the solid state [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Binary and ternary new water soluble copper(II) complexes of l -tyrosine and substituted 1,10-phenanthrolines: Effect of substitution on DNA interactions and cytotoxicities

İnci

Aydın

Vatan

et al. 2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…5 L-Tyrosine, as well as other amino acids, forms coordination bonds with metal ions. These metal ions complexes are structural, spectroscopic, magnetic characterized [6][7][8][9][10][11][12] and tested against bacterial 13,14 or fungal [13][14][15] strains. However, their biological properties are relatively rarely evaluated.…”

Section: Introductionmentioning

confidence: 99%

Structural, spectroscopic and magnetic properties of a novel copper(ii)l-tyrosinato complex

et al. 2014

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Preparation, structural characterization and biological evaluation of l-tyrosinate metal ion complexes

Cited by 26 publications

References 35 publications

Co, Zn and Ag-MOFs evaluation as biocidal materials towards photosynthetic organisms

Co, Zn and Ag-MOFs evaluation as biocidal materials towards photosynthetic organisms

Binary and ternary new water soluble copper(II) complexes of l -tyrosine and substituted 1,10-phenanthrolines: Effect of substitution on DNA interactions and cytotoxicities

Structural, spectroscopic and magnetic properties of a novel copper(ii)l-tyrosinato complex

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