Prevalence and Antimicrobial Susceptibility of <i>Salmonella</i> in Retail Meat Collected from Different Markets in Sichuan, China
<i>Salmonella</i> is one of the most significant zoonotic and foodborne pathogens, and it is the leading cause of bacterial diarrhea. In this study, 156 retail meat samples were collected from three supermarkets and one local wet market in Sichuan, China, including 96 chicken samples and...
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2025-02-01
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| author | Hang Zeng Donghai Yang Nanxi Huang Yonglin Li Jiazhen Chen Zhongjia Yu Jie Tang Zhenju Jiang |
| author_facet | Hang Zeng Donghai Yang Nanxi Huang Yonglin Li Jiazhen Chen Zhongjia Yu Jie Tang Zhenju Jiang |
| author_sort | Hang Zeng |
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| description | <i>Salmonella</i> is one of the most significant zoonotic and foodborne pathogens, and it is the leading cause of bacterial diarrhea. In this study, 156 retail meat samples were collected from three supermarkets and one local wet market in Sichuan, China, including 96 chicken samples and 60 pork samples. The prevalence of <i>Salmonella</i> in these samples was analyzed, and 91 samples (58.33%) tested positive, with 60 (62.5%) positive chicken samples and 31 (51.67%) positive pork samples. From these positive samples, 190 <i>Salmonella</i> isolates were confirmed by double PCR. Subsequent serotyping identified nine serovars, with the predominant ones being <i>S.</i> London (58.94%), <i>S.</i> Typhimurium (12.58%), and <i>S.</i> Enteritidis (10.60%). Antibiotic susceptibility test revealed that 168 isolates (88.42%) were resistant to at least one antibiotic, and 150 isolates (78.95%) were resistant to three or more antibiotics. The highest resistance rates were observed for ampicillin (83.16%), followed by tetracycline (76.31%) and trimethoprim/sulfamethoxazole (67.37%). In the disinfectant susceptibility test, <i>Salmonella</i> isolates exhibited higher resistance rates to benzalkonium bromide (100%) and benzalkonium chloride (97.37%), while showing a lower resistance rate to potassium monopersulfate triple salt (33.6%). These findings highlight the high prevalence of <i>Salmonella</i> and its significant resistance to antibiotics and disinfectants, indicating that effective measures must be implemented to ensure the microbiological safety of retail meat. |
| format | Article |
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| language | English |
| publishDate | 2025-02-01 |
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| series | Pathogens |
| spelling | doaj-art-8e5a4ac200974ae2b1f1a317bfdbe3a82025-08-20T02:42:24ZengMDPI AGPathogens2076-08172025-02-0114322210.3390/pathogens14030222Prevalence and Antimicrobial Susceptibility of <i>Salmonella</i> in Retail Meat Collected from Different Markets in Sichuan, ChinaHang Zeng0Donghai Yang1Nanxi Huang2Yonglin Li3Jiazhen Chen4Zhongjia Yu5Jie Tang6Zhenju Jiang7School of Food and Bioengineering, Xihua University, Chengdu 610039, ChinaSchool of Food and Bioengineering, Xihua University, Chengdu 610039, ChinaSchool of Food and Bioengineering, Xihua University, Chengdu 610039, ChinaSchool of Food and Bioengineering, Xihua University, Chengdu 610039, ChinaSchool of Food and Bioengineering, Xihua University, Chengdu 610039, ChinaSchool of Animal Science and Technology, Foshan University, Foshan 528225, ChinaSchool of Food and Bioengineering, Xihua University, Chengdu 610039, ChinaSchool of Food and Bioengineering, Xihua University, Chengdu 610039, China<i>Salmonella</i> is one of the most significant zoonotic and foodborne pathogens, and it is the leading cause of bacterial diarrhea. In this study, 156 retail meat samples were collected from three supermarkets and one local wet market in Sichuan, China, including 96 chicken samples and 60 pork samples. The prevalence of <i>Salmonella</i> in these samples was analyzed, and 91 samples (58.33%) tested positive, with 60 (62.5%) positive chicken samples and 31 (51.67%) positive pork samples. From these positive samples, 190 <i>Salmonella</i> isolates were confirmed by double PCR. Subsequent serotyping identified nine serovars, with the predominant ones being <i>S.</i> London (58.94%), <i>S.</i> Typhimurium (12.58%), and <i>S.</i> Enteritidis (10.60%). Antibiotic susceptibility test revealed that 168 isolates (88.42%) were resistant to at least one antibiotic, and 150 isolates (78.95%) were resistant to three or more antibiotics. The highest resistance rates were observed for ampicillin (83.16%), followed by tetracycline (76.31%) and trimethoprim/sulfamethoxazole (67.37%). In the disinfectant susceptibility test, <i>Salmonella</i> isolates exhibited higher resistance rates to benzalkonium bromide (100%) and benzalkonium chloride (97.37%), while showing a lower resistance rate to potassium monopersulfate triple salt (33.6%). These findings highlight the high prevalence of <i>Salmonella</i> and its significant resistance to antibiotics and disinfectants, indicating that effective measures must be implemented to ensure the microbiological safety of retail meat.https://www.mdpi.com/2076-0817/14/3/222<i>Salmonella</i>retail meatprevalenceserovarantimicrobial resistance |
| spellingShingle | Hang Zeng Donghai Yang Nanxi Huang Yonglin Li Jiazhen Chen Zhongjia Yu Jie Tang Zhenju Jiang Prevalence and Antimicrobial Susceptibility of <i>Salmonella</i> in Retail Meat Collected from Different Markets in Sichuan, China Pathogens <i>Salmonella</i> retail meat prevalence serovar antimicrobial resistance |
| title | Prevalence and Antimicrobial Susceptibility of <i>Salmonella</i> in Retail Meat Collected from Different Markets in Sichuan, China |
| title_full | Prevalence and Antimicrobial Susceptibility of <i>Salmonella</i> in Retail Meat Collected from Different Markets in Sichuan, China |
| title_fullStr | Prevalence and Antimicrobial Susceptibility of <i>Salmonella</i> in Retail Meat Collected from Different Markets in Sichuan, China |
| title_full_unstemmed | Prevalence and Antimicrobial Susceptibility of <i>Salmonella</i> in Retail Meat Collected from Different Markets in Sichuan, China |
| title_short | Prevalence and Antimicrobial Susceptibility of <i>Salmonella</i> in Retail Meat Collected from Different Markets in Sichuan, China |
| title_sort | prevalence and antimicrobial susceptibility of i salmonella i in retail meat collected from different markets in sichuan china |
| topic | <i>Salmonella</i> retail meat prevalence serovar antimicrobial resistance |
| url | https://www.mdpi.com/2076-0817/14/3/222 |
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