E-ISSN 2536-9520 | ISSN 1110-2047
 

Original Article 


Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed.

Abstract
A survey was conducted to determine the prevalence of Aeromonas spp. in 75 random samples (25 each of raw cow's milk, local plain yoghurt and Domiati cheese) collected from different dairy shops, supermarket and street peddlers in Diarb Negm and Zagazig cities, Sharkia Governorate, Egypt. Investigations involved proteolytic and lipolytic activities of isolated Aeromonas spp. and the effect of heat- treatment, acidity, pH and sodium chloride concentration on prevalence of Aeromonas bacteria. Prevalence of Aeromonas spp. was proved in 32.0%, 44.0% and 20.0% of examined raw cow's milk, local plain yoghurt and Domiati cheese samples with a mean count of 9.8 x103, 1.4 x105 and 6.9 x103/ml, respectively. Classification of confirmed raw cow's milk isolates revealed that A. trota, A. hydrophila, A. janda and A. caviae were the predominant strains with percentages of 40.0%, 25.0%, 25.0% and 10.0%, respectively. While, local plain yoghurt isolates could be classified as A. caviae, A. sobria, A. hydrophila, A. trota and A. schubertii with percentages of 36.4%, 22.7%, 18.2%, 13.6% and 9.1%, respectively. Meanwhile, Classification of 10 confirmed Domiati cheese cultures revealed that the predominant strains were A. hydrophila, A. caviae and A. trota with percentages of 30%, 50% and 20%, respectively. All laboratory pasteurized milk samples revealed no count and there is marked decrease in the count of Aeromonas spp. as the acidity % of the examined raw cow’s milk samples increase, the pH value of the examined local plain yoghurt samples decrease and the NaCl % of the examined Domiati cheese samples increase. Characterization of isolated Aeromonas strains pointed that 50% of A. hydrophila, 60% of A. caviae, 40% of A. sobria, 53.8% of A. trota, 100% of A. janda and 50% of A. schubertii were psychrotrophic. A. hydrophila exhibited proteolytic and lipolytic activities at the percentage of 41.7% and 16.7%, respectively but in case of A. caviae strains the percentages were 46.7% and 20%, respectively and with A. trota were 30.8% and 15.4%, respectively. 60% of A. sobria and 100% of A. janda and A. schubertii strains showed proteolytic activity only. The public health importance and economic significance of existing microorganisms as well as the suggestive measures for improving the quality of raw milk and dairy products were discussed.

Key words: Aeromonas; raw cow\'s milk; Domiati cheese; local plain yoghurt; laboratory pasteurized milk; acidity %; pH value; NaCl %.


 
ARTICLE TOOLS
Abstract
PDF Fulltext
How to cite this articleHow to cite this article
Citation Tools
Related Records
 Articles by Nagwa I. ElBalat
Articles by Salah F. Abd-ElAal
Articles by Madeha A. Ayoub
Articles by Magdy S. Elsayed
on Google
on Google Scholar


How to Cite this Article
Pubmed Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed. Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt. AJVS. 2014; 40(1): 52-64. doi:10.5455/ajvs.49073


Web Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed. Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt. https://www.alexjvs.com/?mno=49073 [Access: December 03, 2023]. doi:10.5455/ajvs.49073


AMA (American Medical Association) Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed. Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt. AJVS. 2014; 40(1): 52-64. doi:10.5455/ajvs.49073



Vancouver/ICMJE Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed. Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt. AJVS. (2014), [cited December 03, 2023]; 40(1): 52-64. doi:10.5455/ajvs.49073



Harvard Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed (2014) Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt. AJVS, 40 (1), 52-64. doi:10.5455/ajvs.49073



Turabian Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed. 2014. Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt. Alexandria Journal of Veterinary Sciences, 40 (1), 52-64. doi:10.5455/ajvs.49073



Chicago Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed. "Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt." Alexandria Journal of Veterinary Sciences 40 (2014), 52-64. doi:10.5455/ajvs.49073



MLA (The Modern Language Association) Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed. "Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt." Alexandria Journal of Veterinary Sciences 40.1 (2014), 52-64. Print. doi:10.5455/ajvs.49073



APA (American Psychological Association) Style

Nagwa I. ElBalat, Salah F. Abd-ElAal, Madeha A. Ayoub, Magdy S. Elsayed (2014) Enumeration and Characterization of Aeromonas spp. Isolated from Milk and Some Dairy Products in Sharkia Governorate, Egypt. Alexandria Journal of Veterinary Sciences, 40 (1), 52-64. doi:10.5455/ajvs.49073





Most Viewed Articles
Most Accessed Articles

  • Assessment of The Efficiency of Some Chemical Disinfectants Used in poultry Farms Against Coccidiosis
    Hamed Abdel tawab Samaha, Yasser Nasr Haggag, Mohammed Al sayed Nossair, Heba Mohammed Habib
    AJVS. 2013; 39(1): 82-90
    » Abstract

  • Physiological and Oxidative Stress Biomarkers in the Freshwater Nile Tilapia, Oreochromis niloticus L., exposed to sublethal doses of cadmium
    Ahmed M. EL-Gazzar, Khalid E. Ashry, Yasser S. El-Sayed
    AJVS. 2014; 40(1): 29-43
    » Abstract » doi: 10.5455/ajvs.48333

  • Influence of Combined Administration of Turmeric and Black seed on Selected Biochemical Parameters of Diabetic Rats
    Sabry M. El-Bahr, Nabil M. Taha, Mahdy A. Korshom, Abd EL-Wahab A. Mandour, Mohamed A. Lebda
    AJVS. 2014; 41(1): 19-27
    » Abstract » doi: 10.5455/ajvs.154650

  • Molecular Characterization of Listeria Species Isolated from Frozen Fish
    Gaber S. Abdellrazeq, Ayman M. Kamar, Samya M. El-Houshy
    AJVS. 2014; 40(1): 1-15
    » Abstract » doi: 10.5455/ajvs.45443

  • Growth Performance, Blood Parameters, Immune response and Carcass Traits of Broiler Chicks Fed on Graded Levels of Wheat Instead of Corn without or With Enzyme Supplementation
    Mohamed I. El-Katcha, Mosaad A. Soltan, Hany F. El-Kanwy, EL-syaed R. kawarie
    AJVS. 2014; 40(1): 95-111
    » Abstract » doi: 10.5455/ajvs.48232

  • Most Downloaded
    Top Downloaded Articles

  • Comparative Study of Cellular and Humoral Immune Response to BHV-1 Vaccines in Cattle and Buffalo Calves
    Fayrouz S. Naim; Samy A. Khalil and Helmy A. Torky
    AJVS. 2016; 51(2): 367-373
    » Abstract

  • Growth Performance, Blood Parameters, Immune response and Carcass Traits of Broiler Chicks Fed on Graded Levels of Wheat Instead of Corn without or With Enzyme Supplementation
    Mohamed I. El-Katcha, Mosaad A. Soltan, Hany F. El-Kanwy, EL-syaed R. kawarie
    AJVS. 2014; 40(1): 95-111
    » Abstract » doi: 10.5455/ajvs.48232

  • Effect of Excess Fluoride on Reproductive Potentials in Farm Animals (Ovine)
    Ghada H. Abdel-Rahman, Hanaa A. El-Hallawany, Dohreig RA.
    AJVS. 2018; 57(2): 41-57
    » Abstract » doi: 10.5455/ajvs.296364

  • Physiological and Oxidative Stress Biomarkers in the Freshwater Nile Tilapia, Oreochromis niloticus L., exposed to sublethal doses of cadmium
    Ahmed M. EL-Gazzar, Khalid E. Ashry, Yasser S. El-Sayed
    AJVS. 2014; 40(1): 29-43
    » Abstract » doi: 10.5455/ajvs.48333

  • Using of Polypropylene Mesh for Hernioplasty in Calves
    Mostafa M. kassam, Mahmoud H. Elkammer, Ahmed S. Korittum, Ali A. Abdel-Wahed
    AJVS. 2014; 40(1): 112-117
    » Abstract » doi: 10.5455/ajvs.47290

  • Most Cited Articles
    Most Cited Articles