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Statements

Subject Item
n2:RIV%2F61389013%3A_____%2F13%3A00389737%21RIV13-AV0-61389013
rdf:type
n6:Vysledek skos:Concept
dcterms:description
New zinc(II) 2-chlorobenzoates of general formula [Zn(2-ClC6H4COO)2(L)2] (where L = caffeine - caf, urea - u, methyl-3-pyridylcarbamate - mpc, phenazone - phen, theophylline - thp) were synthesised and characterised by elemental analysis and IR spectroscopy. The thermal behaviour of the complexes was studied by TG/DTG and DTA methods in nitrogen and in air atmosphere. During the thermal decomposition of the studied compounds the release of organic ligands take place followed by the decomposition of 2-chlorobenzoate anion. The volatile decomposition intermediates were proved by mass spectrometry. Zinc oxide was found as the final product of the thermal decomposition performed up to 1000 K. The antimicrobial activity of the zinc(II) complexes against various strains of bacteria, yeasts and filamentous fungi has been investigated. It was found that the prepared compounds retarded the growth of Staphylococcus aureus, Escherichia coli, Candida albicans, Rhizopus oryzae and Microsporum gypseum, respectively. The most resistant to all tested compounds was probiotic strain of Lactobacillus plantarum. The presence of zinc and ligands in the prepared compounds increased the inhibitory effect compared to sodium salt of prepared compounds and free ligands alone. New zinc(II) 2-chlorobenzoates of general formula [Zn(2-ClC6H4COO)2(L)2] (where L = caffeine - caf, urea - u, methyl-3-pyridylcarbamate - mpc, phenazone - phen, theophylline - thp) were synthesised and characterised by elemental analysis and IR spectroscopy. The thermal behaviour of the complexes was studied by TG/DTG and DTA methods in nitrogen and in air atmosphere. During the thermal decomposition of the studied compounds the release of organic ligands take place followed by the decomposition of 2-chlorobenzoate anion. The volatile decomposition intermediates were proved by mass spectrometry. Zinc oxide was found as the final product of the thermal decomposition performed up to 1000 K. The antimicrobial activity of the zinc(II) complexes against various strains of bacteria, yeasts and filamentous fungi has been investigated. It was found that the prepared compounds retarded the growth of Staphylococcus aureus, Escherichia coli, Candida albicans, Rhizopus oryzae and Microsporum gypseum, respectively. The most resistant to all tested compounds was probiotic strain of Lactobacillus plantarum. The presence of zinc and ligands in the prepared compounds increased the inhibitory effect compared to sodium salt of prepared compounds and free ligands alone.
dcterms:title
Thermal decomposition study and biological characterization of zinc(II) 2-chlorobenzoate complexes with bioactive ligands Thermal decomposition study and biological characterization of zinc(II) 2-chlorobenzoate complexes with bioactive ligands
skos:prefLabel
Thermal decomposition study and biological characterization of zinc(II) 2-chlorobenzoate complexes with bioactive ligands Thermal decomposition study and biological characterization of zinc(II) 2-chlorobenzoate complexes with bioactive ligands
skos:notation
RIV/61389013:_____/13:00389737!RIV13-AV0-61389013
n6:predkladatel
n7:ico%3A61389013
n3:aktivita
n15:Z
n3:aktivity
Z(AV0Z40500505)
n3:cisloPeriodika
3
n3:dodaniDat
n9:2013
n3:domaciTvurceVysledku
n14:6669883
n3:druhVysledku
n8:J
n3:duvernostUdaju
n10:S
n3:entitaPredkladatele
n13:predkladatel
n3:idSjednocenehoVysledku
110894
n3:idVysledku
RIV/61389013:_____/13:00389737
n3:jazykVysledku
n18:eng
n3:klicovaSlova
zinc; 2-chlorobenzoate; thermal
n3:klicoveSlovo
n12:thermal n12:zinc n12:2-chlorobenzoate
n3:kodStatuVydavatele
HU - Maďarsko
n3:kontrolniKodProRIV
[896279037C6E]
n3:nazevZdroje
Journal of Thermal Analysis and Calorimetry
n3:obor
n4:CD
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
7
n3:rokUplatneniVysledku
n9:2013
n3:svazekPeriodika
111
n3:tvurceVysledku
Mudroňová, D. Nour El-Dien, F. A. Hudecová, D. Findoráková, L. Györyová, K. Homzová, K. Kovářová, Jana
n3:wos
000315298800017
n3:zamer
n19:AV0Z40500505
s:issn
1388-6150
s:numberOfPages
11
n5:doi
10.1007/s10973-012-2275-9