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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
Antibacterial action of zinc oxide nanoparticles against foodborne pathogens
Journal of Food Safety, Volume 31, No. 2, Year 2011
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Description
The current spreading of nanomaterial applications supports the search for further possible functions of theses diminutive particles. The antibacterial potentiality of zinc oxide (ZnO) nanoparticles (NPs), compared with conventional ZnO powder, against nine bacterial strains, mostly foodborne including pathogens, was evaluated using qualitative and quantitative assays. ZnO NP was more efficient as antibacterial agent than powder. Gram-positive bacteria were generally more sensitive to ZnO than Gram negatives. The exposure of Salmonella typhimurium and Staphylococcus aureus to their relevant minimal inhibitory concentrations from ZnO NP reduced the cell number to zero within 8 and 4h, respectively. Scanning electron micrographs of the treated bacteria with NPs exhibited that the disruptive effect of ZnO on S. aureus was vigorous as all treated cells were completely exploded or lysed after only 4h from exposure. Promising results of ZnO NP antibacterial activity suggest its usage in food systems as preservative agent after further required investigations and risk assessments. © 2011 Wiley Periodicals, Inc.
Authors & Co-Authors
Tayel, Ahmed A.
Egypt, Sadat City
University of Sadat City
El-Tras, W. F.
Egypt, Kafr El-sheikh
Kafrelsheikh University
Moussa, Shaaban H.
Egypt, Sadat City
University of Sadat City
El-Baz, A. F.
Egypt, Sadat City
University of Sadat City
Mahrous, Hoda A.
Egypt, Sadat City
University of Sadat City
Salem, Mohamed Fathy
Egypt, Sadat City
University of Sadat City
Brimer, Leon
Denmark, Copenhagen
Københavns Universitet
Statistics
Citations: 298
Authors: 7
Affiliations: 3
Identifiers
Doi:
10.1111/j.1745-4565.2010.00287.x
ISSN:
17454565
Research Areas
Food Security
Infectious Diseases
Study Approach
Qualitative
Quantitative