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Gene emrC Associated with Resistance to Quaternary Ammonium Compounds Is Common among Listeria monocytogenes from Meat Products and Meat Processing Plants in Poland
(1) Background: is a food pathogen of great importance, characterized by a high mortality rate. Quaternary ammonium compounds (QACs), such as benzalkonium chloride (BC), are often used as disinfectants in food processing facilities. The effectiveness of disinfection procedures is crucial to food saf...
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Published in: | Antibiotics (Basel) 2024-08, Vol.13 (8), p.749 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | (1) Background:
is a food pathogen of great importance, characterized by a high mortality rate. Quaternary ammonium compounds (QACs), such as benzalkonium chloride (BC), are often used as disinfectants in food processing facilities. The effectiveness of disinfection procedures is crucial to food safety. (2) Methods: A collection of 153 isolates of
from meat processing industry was analyzed for their sensitivity to BC using the agar diffusion method. Genes of interest were detected with PCR. (3) Results: Genes
,
and
were found in 64 (41.8%), 6 (3.9%), and 1 isolate (0.7%), respectively, and 79 isolates (51.6%) were classified as having reduced sensitivity to BC. A strong correlation between carrying QACs resistance-related genes and phenotype was found (
-value < 0.0001). Among 51 isolates originating from bacon (collected over 13 months), 48 had the
gene, which could explain their persistent presence in a processing facility. Isolates with the
gene (from LIPI-3) were significantly (
-value 0.006) less likely to carry QACs resistance-related genes. (4) Conclusions: Reduced sensitivity to QACs is common among
from the meat processing industry. Persistent presence of these bacteria in a processing facility is presumably caused by
-induced QACs resistance. |
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ISSN: | 2079-6382 2079-6382 |
DOI: | 10.3390/antibiotics13080749 |