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Detection, quantification, and characterization of Salmonella enterica in mango, tomato, and raw chicken purchased in the central region of Mexico


Godinez-Oviedo, A and Cabrera-Diaz, E and Palacios-Marmolejo, A and Perez-Covarrubias, OB and Vargas-Daniel, RC and Tamplin, ML and Bowman, JP and Hernandez-Iturriaga, M, Detection, quantification, and characterization of Salmonella enterica in mango, tomato, and raw chicken purchased in the central region of Mexico, Journal of Food Science, 87, (1) pp. 370-382. ISSN 0022-1147 (2022) [Refereed Article]

Copyright Statement

© 2021 Institute of Food Technologists

DOI: doi:10.1111/1750-3841.16003


To estimate human exposure to Salmonella enterica, it is essential to understand the pathogen distribution and characteristics. Prevalence and concentration of S. enterica were determined in mango, tomato, and raw chicken samples purchased in three states (Aguascalientes, Querétaro, and Guadalajara) located in the central region of Mexico during two seasons. In addition, S. enterica isolates were characterized by absence/presence of 13 virulence genes (chromosomal, prophage, and plasmid) and resistance to 14 antibiotics. A total of 300 samples of mango, 272 of tomato, and 354 of raw chicken were analyzed. The mean of the prevalence (24.9%) and concentration (-0.61 Log MPN/g) of S. enterica in chicken was higher than in mango (1.3%, -1.7 Log MPN/g) and tomato (1.1%, -1.7 Log MPN). Among S. enterica isolates (284), there were 7 different virulotypes, belonging 68.7% of isolates to V2; there was high variability in the presence of mobile genetic elements. The occurrence of specific mobile elements ranged from 81.4% to 11.3% among isolates. Among the isolates, 91.5% were resistant to at least one antibiotic with ampicillin being the most frequent; 54.9% of isolates were multidrug resistant. Data from this study can be used for quantitative microbial risk assessment of S. enterica related to mango, tomato, and raw chicken consumption in the central region of Mexico.

Item Details

Item Type:Refereed Article
Keywords:antimicrobial resistance, poultry, produce, Salmonella enterica, virulotyping, food safety, epidemiology, virulence typing, risk analysis
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Food sciences
Research Field:Food safety, traceability, certification and authenticity
Objective Division:Manufacturing
Objective Group:Processed food products and beverages (excl. dairy products)
Objective Field:Processed fruit and vegetable products (incl. juices)
UTAS Author:Godinez-Oviedo, A (Dr Angelica Godinez-Oviedo)
UTAS Author:Tamplin, ML (Professor Mark Tamplin)
UTAS Author:Bowman, JP (Associate Professor John Bowman)
ID Code:148808
Year Published:2022
Web of Science® Times Cited:2
Deposited By:TIA - Research Institute
Deposited On:2022-02-11
Last Modified:2023-02-21

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