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Biological characteristics of enteropathogenic Aeromonas species isolated from different Egyptian foods
Faculty
Science
Year:
2021
Type of Publication:
ZU Hosted
Pages:
Authors:
Gamal abdelaziz abdelhamid
Staff Zu Site
Abstract In Staff Site
Journal:
Biologia Springer
Volume:
Keywords :
Biological characteristics , enteropathogenic Aeromonas species isolated
Abstract:
A total of 185 food samples in Sharkia Governorate, Egypt were analyzed for the presence of Aeromonas spp. The recovered isolates were characterized by biochemical tests based on Bergey’s Manual of Systematic Bacteriology and confirmed by API-20E kit. Of the samples analyzed, 56 (30.27 %) were positive for Aeromonas spp., with the highest incidence in raw milk (55 %) followed by Nile tilapia (48.6 %). A. hydrophila and A. salmonicida were the most predominantly isolated from raw milk and A. caviae was the most prevalent in raw lean beef. A variety of extracellular virulence factors were determined and 83.3 % exhibited β-hemolytic activity; 80 % exhibited lecithinase activity; 75 % exhibited protease activity and 90 % exhibited lipolytic activity. Furthermore, the cytotoxic (act) and the cytotonic (alt) enterotoxins were screened in three selected isolates using PCR assay and the data showed the detection of the two genes with predicted sizes of 232 bp and 442 bp fragments, respectively. These findings indicated a major health risk of infection with enterotoxigenic Aeromonas bacteria for people consuming raw and improper cooked food in Egypt.
Author Related Publications
Gamal abdelaziz abdelhamid, "Partial Purification of two Novel Variants of Bacteriocins Produced by Lactic Acid Bacteria", IDOSI Publications, 2014
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Gamal abdelaziz abdelhamid, "Antimicrobial activity of Enterococcus faecium NM2 Isolated from Urine : Purification, Charactrization and Bactericidal Action of Enterocin NM2", Knowlege review Malaysia, 2014
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Gamal abdelaziz abdelhamid, "Evaluation of the Antimicrobial Activity, Starter Capability and Technological Properties of Some Probiotic Bacteria Isolated from Egyptian Pickles", Life Science journal, 2014
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Gamal abdelaziz abdelhamid, "Incidence and virulence of Bacillus cereus isolated from Egyptian foods during four seasons", Acadimic Journals, 2012
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Gamal abdelaziz abdelhamid, "Biological Characterization and Inhibition of Streptococcus pyogenes ZUH1 Causing Chronic Cystitis by Crocus sativus Methanol Extract, Bee Honey Alone or in Combination with Antibiotics: An In Vitro Study", MDPI, ST ALBAN-ANLAGE 66, CH-4052 BASEL, SWITZERLAND, 2019
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Department Related Publications
Siham Abdahafy Awadallah, "Antibacterial Activity of Essential Oil and Their Effects on Nile tilapia Fingerlings Performance.", Journal of medical Sciences., 2013
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Siham Abdahafy Awadallah, "Effect of copper bearing Egyptian bentonite on the growth performance and intestinal microflora of rabbits.", The Journal of American Science., 2014
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Shaima AbdulRahman Ismail Ezz, "Ecological Studies on Eclipta alba (L.) Hassk. at canal banks of Menia El-Kamh in Sharkia province, Egypt.", المؤتمر العلمى السنوى للبيئه, 2014
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Hdiat Mohammed Hammad Salameh, "Ecophysiological studies of three desert plants growing in two different habitats, central region, Saudi Arabia", Saudi Arabia, 2014
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Hdiat Mohammed Hammad Salameh, "Phytoremediation of the herbicide simazine by P450 transgenic tobacco plants.", السعودية, 2014
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