Antibiotic Residues in Locally Marketed Fresh and Frozen Livers in Cairo and Giza, Egypt

Abstract

This study was performed to detect the antibiotic residues in marketed fresh and frozen liver samples using microbiological bioassay method. One hundred fresh and frozen beef liver samples (50 samples for each) were examined by microbiological bioassay for antibiotic residues, 20 fresh samples (40%) react positive and 2 frozen samples (4%) were positives. Tetracyclines residues were found in all positive fresh and frozen liver samples with an average of 28.7±5.5 and 14.9±5.7µg/g for fresh and frozen liver samples respectively. Aminoglycosides (Gentamycin) residues were found in 1 fresh liver sample (2%) with a concentration 35µg/g while not found in frozen liver samples. The HPLC technique was used for all positive samples for detection of oxytetracycline residue. All positive samples were above the permissible limit according to (National Organization of Food Safety Resolution (13/2020). Effect of cooking has a great effect on elimination of oxytetracycline while freezing has lower effect on oxytetracycline.

Cell membrane-coated nanoparticles: An emerging antibacterial platform for pathogens of food animals

“…Yet, the extensive use of antibiotics has raised the prevalence of antimicrobial resistant bacteria ( 20 ). In addition, the existence of drug residues in food animals further exaggerates the alarming situation for human beings ( 21 – 23 ). This lethal condition motivates scientists to search and develop new innovative nano-therapeutic agents which may successfully treat the resistant infections and avoid the undue excessive use of inaffective antibiotic drugs ( 24 , 25 ).…”

In vitro Acaricidal and Repellent Effects of Amomum subulatum Essential Oil Against Hyalomma Ticks

“…Various acaricides like synthetic pyrethroids organophosphates, carbamates, and organochlorines are being used to control these ticks but their frequent use is resulting in the development of resistant tick species (Selles et al, 2021). Acaricidal resistance has threatened the welfare of livestock farmers globally because it led to decreased productivity and the emergence of infections (Ahmed et al, 2022;Betelhem et al, 2022;Saeed and Alkheraije, 2023;Sikander et al, 2023). Vaccines for the control of ticks have also been developed and being used commercially, but their efficacy is questionable, moreover they have limited value for the control of ticks (Bonnet et al, 2022).…”