Home|Journals|Articles by Year Follow on Twitter

Directory for Medical Articles

Open Access

Original Article

AJVS. 2021; 69(2): 98-112

Microbial Quality and Residues of Some Antibiotics in Conventional and Organic Table Eggs at Retail Stores in Kafrelsheikh Governorate

Nahla A. Ebied, Mostafa S. Abdou, Mona E. Abass.

Chicken eggs are important as food to humans. The present study was conducted in Kafrelsheikh governorate, Egypt. A total of 250 samples (each sample contains 3 eggs) were purchased from different retail stores (conventional and organic, 125samples for each). These samples were subjected to microbiological examination for assessment of the sanitary quality and detection of incidence, serological and molecular characterization of salmonella, and subjected to chemical examination to detect the incidence of 2 antibiotic residues (oxytetracycline and tylosin) in both types of egg. Aerobic plate count showed mean values of 8.0102 4.610 cfu/ml for conventional eggs and 6.2102 3.210 cfu/ml for organic eggs, the coliform count showed a mean value of 4.6102 3.210 cfu /ml and 3.7102 2.6 10 cfu/ml for conventional and organic eggs respectively. Staphylococcus aureus count showed a mean value of 3.11023.1 10 cfu/ml for conventional eggs and 2.3102 2.7 10 cfu/ml for organic egg. Mold and yeast count showed a mean value of 7.310 3.810 cfu/ml and 4.210 1.8 10 cfu/ml for conventional and organic eggs respectively. Salmonella was detected in 4 samples (1.6 % from total samples). All of them were only isolated from conventional eggs with a percentage of 3.2%. Serotype identification of four isolates was S. Kentucky. Salmonella Species were not isolated from organic egg contents. Multiplex PCR detected 3 virulence genes (hila, spvC, and stn) (100% of Salmonella isolates). No positive samples for microbial inhibitor test and no antibiotic residues in organic eggs and 4 conventional egg samples were detected positive for microbial inhibitor test with bacillus subtilis, which confirmed by HPLC for detection of 2 antibiotic residues (oxytetracycline and tylosin) and results revealed that 2 out of 4 positive inhibitor test samples were positive for oxytetracycline residues (317 g /gm and 382 g /gm) respectively, and 3 out of the same 4 samples were positive for tylosin residues (8.6 g /gm, 48 g /gm, and 18.5 g /gm) respectively, and all positive samples exceeded the maximal residues limit (MRL 0.2 g /gm) for both oxytetracycline and tylosin residues. The rate of detection of oxytetracycline and tylosin residues was (1.60%) and (2.4%) respectively from the conventional egg. Public health and economic importance for the isolated microorganisms and antibiotic residues were investigated. Results revealed that organic egg is safer than the conventional one.

Key words: Microbial quality, Salmonellae, multiplex PCR, Bacillus subtilis antibiotic residues, organic and conventional table eggs.

Similar Articles

Passive social media use and psychological well-being during the COVID-19 pandemic: The role of social comparison and emotion regulation.
Yue Z, Zhang R, Xiao J
Computers in human behavior. 2022; 127(): 107050

Biovalue in Human Brain Banking: Applications and Challenges for Research in Neurodegenerative Diseases.
Vedam-Mai V
Methods in molecular biology (Clifton, N.J.). 2022; 2389(): 209-220

Using the Health Belief Model to examine travelers' willingness to vaccinate and support for vaccination requirements prior to travel.
Suess C, Maddock J, Dogru T, Mody M, Lee S
Tourism management. 2022; 88(): 104405

Occupant health in buildings: Impact of the COVID-19 pandemic on the opinions of building professionals and implications on research.
Awada M, Becerik-Gerber B, White E, Hoque S, O'Neill Z, Pedrielli G, Wen J, Wu T
Building and environment. 2022; 207(): 108440

Exploring the Alzheimer's disease neuroepigenome: recent advances and future trends.
Zhang H, Elefant F
Neural regeneration research. 2022; 17(2): 325-327

Full-text options

Latest Statistics about COVID-19
• pubstat.org

Add your Article(s) to Indexes
• citeindex.org

Covid-19 Trends and Statistics
Follow ScopeMed on Twitter
Author Tools
eJPort Journal Hosting
About BiblioMed
License Information
Terms & Conditions
Privacy Policy
Contact Us

The articles in Bibliomed are open access articles licensed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (https://creativecommons.org/licenses/by-nc-sa/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
ScopeMed is a Database Service for Scientific Publications. Copyright ScopeMed Information Services.

ScopeMed Web Sites