alexa Thermal Properties, Antimicrobial Activity of Azo Complexes and Ultrastructure Study of Some Affected Bacteria | OMICS International | Abstract
ISSN: 1948-5948

Journal of Microbial & Biochemical Technology
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Research Article

Thermal Properties, Antimicrobial Activity of Azo Complexes and Ultrastructure Study of Some Affected Bacteria

Abou-Dobara MI1, El-Sonbati AZ2*, Diab MA2, El-Bindary AA2 and Sh M Morgan2

1Botany Department, Faculty of Science, Damietta University, Damietta, Egypt

2Chemistry Department, Faculty of Science, Damietta University, Damietta, Egypt

*Corresponding Author:
El-Sonbati AZ
Chemistry Department, Faculty of Science
Damietta University, Damietta, Egypt
Tel: +201060081581
Fax: +20 572403868
E-mail: [email protected]

Published date: July 01, 2014; Published date: July 21, 2014; Published date: July 28, 2014

Citation: Abou-Dobara MI, El-Sonbati AZ, Diab MA, El-Bindary AA, Morgan SM (2014) Thermal Properties, Antimicrobial Activity of Azo Complexes and Ultrastructure Study of Some Affected Bacteria. J Microbial Biochem Technol S3:006. doi:10.4172/1948-5948.S3-006

Copyright: © 2014 Abou-Dobara MI, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited


A series of copper (II) complexes of bidentate azo rhodanine ligands (HLn) have been synthesized and characterized. The IR spectral and thermogravimetric analysis are used to characterize the isolated complexes. X-ray diffraction patterns show polycrystalline nature for as-synthesized ligand HL2 and its complex. Quantum chemical parameters, absolute hardness, global electrophilicity and additional electronic charge were calculated for HLn. Copper(II) complexes (1-4) are tested against four local bacterial species; namely two Gram positive bacteria (Staphylococcus aureus and Bacillus cereus) and two Gram negative bacteria (Escherichia coli and Klebsiella pneumoniae) and against four local fungal species (Aspergillus niger, Fusarium oxysporium, Penicillium italicum and Alternaria alternata). The tested complexes have good antibacterial activity against Staphylococcus aureus and Escherichia coli and have low antifungal activity against Aspergillus niger, Fusarium oxysporium and Alternaria alternata. We found that the complex (3) is more active than other complexes against Staphylococcus aureus and Escherichia coli as expected from Hammett’s substituent coefficients (σR). Ultrastructure studies of the affected Staphylococcus aureus and Escherichia coli confirmed that complex (3) has bactericidal effect.


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