Isolation, antimicrobial resistance and virulence characterization of Salmonella spp. from fresh foods in retail markets in Hangzhou, China

Qian, Min; Xu, Dingting; Wang, Jiankang; Zaeim, Davood; Han, Jianzhong; Qu, Daofeng

doi:10.1371/journal.pone.0292621

Cited by 4 publications

(1 citation statement)

References 43 publications

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“…Bacteria can cause acute poisoning, long-term diseases, serious disabilities and even deaths [3]. Among all the bacteria species, Salmonella causes the most serious illnesses and deaths related to contaminated food [4,5]. Salmonella is commonly found in birds, vegetables and also in natural water [6].…”

Section: Introductionmentioning

confidence: 99%

Review of Detection Limits for Various Techniques for Bacterial Detection in Food Samples

Zhao,

Bhat,

O’Connor

et al. 2024

Nanomaterials

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Foodborne illnesses can be infectious and dangerous, and most of them are caused by bacteria. Some common food-related bacteria species exist widely in nature and pose a serious threat to both humans and animals; they can cause poisoning, diseases, disabilities and even death. Rapid, reliable and cost-effective methods for bacterial detection are of paramount importance in food safety and environmental monitoring. Polymerase chain reaction (PCR), lateral flow immunochromatographic assay (LFIA) and electrochemical methods have been widely used in food safety and environmental monitoring. In this paper, the recent developments (2013–2023) covering PCR, LFIA and electrochemical methods for various bacterial species (Salmonella, Listeria, Campylobacter, Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli)), considering different food sample types, analytical performances and the reported limit of detection (LOD), are discussed. It was found that the bacteria species and food sample type contributed significantly to the analytical performance and LOD. Detection via LFIA has a higher average LOD (24 CFU/mL) than detection via electrochemical methods (12 CFU/mL) and PCR (6 CFU/mL). Salmonella and E. coli in the Pseudomonadota domain usually have low LODs. LODs are usually lower for detection in fish and eggs. Gold and iron nanoparticles were the most studied in the reported articles for LFIA, and average LODs were 26 CFU/mL and 12 CFU/mL, respectively. The electrochemical method revealed that the average LOD was highest for cyclic voltammetry (CV) at 18 CFU/mL, followed by electrochemical impedance spectroscopy (EIS) at 12 CFU/mL and differential pulse voltammetry (DPV) at 8 CFU/mL. LOD usually decreases when the sample number increases until it remains unchanged. Exponential relations (R2 > 0.95) between LODs of Listeria in milk via LFIA and via the electrochemical method with sample numbers have been obtained. Finally, the review discusses challenges and future perspectives (including the role of nanomaterials/advanced materials) to improve analytical performance for bacterial detection.

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Section: Introductionmentioning

confidence: 99%

Review of Detection Limits for Various Techniques for Bacterial Detection in Food Samples

Zhao,

Bhat,

O’Connor

et al. 2024

Nanomaterials

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Investigation and detection of multiple antibiotic-resistant pathogenic bacteria in municipal wastewater of Dhaka city

Siddique,

Munni,

Hasan

et al. 2024

Discov Water

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Background Water pollution in densely populated urban areas, mainly from municipal wastewater, poses a significant threat. Pathogenic bacteria, such as Vibrio spp. and fecal coliform, endanger public health and the environment. Additionally, antibiotic-resistant bacteria in wastewater complicate treatment and heighten public health concerns. Methods The study sampled municipal wastewater from ten Dhaka neighborhoods, selecting treatment plants, sewage outlets, and various collection points using meticulous techniques for representative samples. Bacteriological and biochemical analyses were conducted using standardized methods. Antimicrobial susceptibility testing (AST) was performed with the disk diffusion method against 13 widely used antibiotics. Results All sampled areas exhibited positive results for Vibrio spp., fecal coliform, E. coli, and Salmonella spp. Varying bacterial concentrations were observed, with the highest concentration of TVC, total vibrio spp., and total fecal coliform, total E. coli count, and total Salmonella spp. were found in Uttara (1.9 × 104 CFU/ml), Bangshal (1.8 × 102 CFU/ml), and Lalbag (2.1 × 103 CFU/ml), Mirpur (3.70 × 102 CFU/ml), and Lalbag (6 × 102 CFU/ml) respectively. AST results revealed significant resistance among all bacterial species to various antibiotics. Specifically, Vibrio spp. showed 100% resistance to cefuroxime, fecal coliform exhibited 90% resistance to cephradine, E. coli demonstrated 60% resistance to cephradine, and Salmonella spp. displayed 90% resistance to ampicillin. Conclusion The study highlights the existence of multiple antibiotic-resistant bacteria in Dhaka's wastewater. Addressing antibiotic resistance is essential to manage the risks of multiple antibiotic-resistant infections and maintain antibiotic effectiveness. These implications are critical for various stakeholders, including public health officials, policymakers, environmentalists, and urban planners.

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Antibiotics’ resistance profile of pathogens isolated from fish products sold in the city of Bangangté, Cameroon: Aqueous extracts from spices’ formulations used as accompanying soup of braised fish as antimicrobial alternative

Mouafo,

Pahane,

Nana

et al. 2024

Heliyon

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Isolation, antimicrobial resistance and virulence characterization of Salmonella spp. from fresh foods in retail markets in Hangzhou, China

Cited by 4 publications

References 43 publications

Review of Detection Limits for Various Techniques for Bacterial Detection in Food Samples

Review of Detection Limits for Various Techniques for Bacterial Detection in Food Samples

Investigation and detection of multiple antibiotic-resistant pathogenic bacteria in municipal wastewater of Dhaka city

Antibiotics’ resistance profile of pathogens isolated from fish products sold in the city of Bangangté, Cameroon: Aqueous extracts from spices’ formulations used as accompanying soup of braised fish as antimicrobial alternative

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