Related Experiment Video
Updated: Sep 29, 2026

Isolation and Identification of Waterborne Antibiotic-Resistant Bacteria and Molecular Characterization of their Antibiotic Resistance Genes
Published on: March 3, 2023
[Occurrence of beta-lactamase types ESBL and AmpC among gram-negative rods isolated from food]
Danuta Majczyna1, Danuta Białasiewicz
1Centralne Laboratorium Chłodnictwa w łodzi.
Abstract:
The aim of the study was to isolate extended spectrum beta-laktamases (ESBL) and chromosomal beta-laktamases AmpC producing strains from food products. A total of 739 Gram-negative bacteria were tested with double disc diffusion method using cefotaxim, ceftasidim and amoxycillin with clavulanic acid. One strain producing ESBL and belonging to Stenotrophomonas maltophilia was detected from the ice cream (0.14% of all strains). From different food products a total of 14 microorganisms (1.9%) having AmpC enzymes have been isolated. They belonged to Enterobacter spp, Hafnia spp, Morganella spp, Citrobacter, Acinetobacter, and Cedecea. Appearance of strains producing beta-laktamases ESBL and AmpC among microorganism isolated from food make it necessary to monitor enzymes activity during routine microbiological control of foods.
Related Concept Videos
Clinical Significance of Antibiotic Resistance
Mechanism of Antibiotic Resistance in MRSA
Bacterial Gastroenteritis
Development of Antibiotic Resistance
Microbial Spoilage of Food
Inhibitors of Gram-positive Cell Wall Synthesis
