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Popy NN, Hoque MN, Khan MFR, Biswas L, Rahman MH, Saiduzzaman M, Rahman M, Rahman MB. Draft genome sequencing of a multidrug-resistant Salmonella enterica subspecies enterica serovar Typhimurium strain isolated from chicken in Bangladesh. Microbiol Resour Announc 2024; 13:e0061923. [PMID: 38088574 DOI: 10.1128/mra.00619-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 11/21/2023] [Indexed: 01/18/2024] Open
Abstract
Herein this study, we sequenced the genome of a multidrug-resistant Salmonella enterica serovar Typhimurium strain MBR-MFRK-23 isolated from the liver tissue of a diseased layer chicken. The 4,964,854-bp draft genome comprises 50 contigs with 50.5× coverage and 52.1% GC content and is typed as S. enterica sequence type 19.
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Affiliation(s)
- Najmun Nahar Popy
- Department of Microbiology and Hygiene, Bangladesh Agricultural University , Mymensingh, Bangladesh
| | - M Nazmul Hoque
- Molecular Biology and Bioinformatics Laboratory, Department of Gynecology, Obstetrics and Reproductive Health, Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU) , Gazipur, Bangladesh
| | | | - Limon Biswas
- Department of Microbiology and Hygiene, Bangladesh Agricultural University , Mymensingh, Bangladesh
| | - Mohammad Habibur Rahman
- Department of Microbiology and Hygiene, Bangladesh Agricultural University , Mymensingh, Bangladesh
| | - Md Saiduzzaman
- Department of Neurology, Mymensingh Medical College Hospital , Mymensingh, Bangladesh
| | - Marzia Rahman
- Department of Microbiology and Hygiene, Bangladesh Agricultural University , Mymensingh, Bangladesh
| | - Md Bahanur Rahman
- Department of Microbiology and Hygiene, Bangladesh Agricultural University , Mymensingh, Bangladesh
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2
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Sandrasaigaran P, Mohan S, Segaran NS, Lee TY, Radu S, Hasan H. Prevalence of multi-antimicrobial resistant non-typhoidal Salmonella isolated from filth flies at wet markets in Klang, Malaysia, and their survival in the simulated gastric fluid. Int J Food Microbiol 2023; 407:110390. [PMID: 37722349 DOI: 10.1016/j.ijfoodmicro.2023.110390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/30/2023] [Accepted: 09/02/2023] [Indexed: 09/20/2023]
Abstract
Filth flies at wet markets can be a vector harbouring multiple antimicrobial-resistant (MAR) nontyphoidal Salmonella (NTS), and such strains are a significant threat to public health as they may cause severe infections in humans. This study aims to investigate the prevalence of antimicrobial-resistant NTS, especially Salmonella Enteritidis and S. Typhimurium harboured by filth flies at wet markets, and investigate their survival in the simulated gastric fluid (SGF). Filth flies (n = 90) were captured from wet markets in Klang, Malaysia, and processed to isolate Salmonella spp. The isolates (n = 16) were identified using the multiplex-touchdown PCR and assessed their antimicrobial susceptibility against 11 antimicrobial agents. Finally, three isolates with the highest MAR index were subjected to SGF survival tests. It was observed that 17.8 % of flies (n = 16/90) harbouring Salmonella, out of which 10 % (n = 9/90) was S. Enteritidis, 2.2 % (n = 2/90) was S. Typhimurium, and 5.6 % was unidentified serotypes of Salmonella enterica subsp. I. 43.8 % (n = 7/16) were confirmed as MAR, and they were observed to be resistant against ampicillin, chloramphenicol, kanamycin, streptomycin, and nalidixic acid. Three strains, F35, F75, and F85 demonstrated the highest MAR index and were able to survive (>6-log10) in the SGF (180 min), indicating their potential virulence and invasiveness. This study provides significant insights into the prevalence and severity of MAR nontyphoidal Salmonella harboured by filth flies in wet markets, which may help inform strategies for controlling the spread and outbreak of foodborne disease.
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Affiliation(s)
- Pratheep Sandrasaigaran
- Department of Biotechnology, School of Biotechnology, Manipal International University, Nilai, Negeri Sembilan, Malaysia; Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Shuvarnah Mohan
- Department of Biotechnology, School of Biotechnology, Manipal International University, Nilai, Negeri Sembilan, Malaysia
| | - Nithiyha Sandara Segaran
- Department of Biotechnology, School of Biotechnology, Manipal International University, Nilai, Negeri Sembilan, Malaysia
| | - Tze Yan Lee
- School of Liberal Arts, Science and Technology (PUScLST), Perdana University, Wisma Chase Perdana, Changkat Semantan Damansara Heights, 50490 Kuala Lumpur, Malaysia
| | - Son Radu
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - Hanan Hasan
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia; Halal Products Research Institute, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia.
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Mkangara M. Prevention and Control of Human Salmonella enterica Infections: An Implication in Food Safety. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2023; 2023:8899596. [PMID: 37727836 PMCID: PMC10506869 DOI: 10.1155/2023/8899596] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 08/19/2023] [Accepted: 08/26/2023] [Indexed: 09/21/2023]
Abstract
Salmonella is a foodborne zoonotic pathogen causing diarrhoeal disease to humans after consuming contaminated water, animal, and plant products. The bacterium is the third leading cause of human death among diarrhoeal diseases worldwide. Therefore, human salmonellosis is of public health concern demanding integrated interventions against the causative agent, Salmonella enterica. The prevention of salmonellosis in humans is intricate due to several factors, including an immune-stable individual infected with S. enterica continuing to shed live bacteria without showing any clinical signs. Similarly, the asymptomatic Salmonella animals are the source of salmonellosis in humans after consuming contaminated food products. Furthermore, the contaminated products of plant and animal origin are a menace in food industries due to Salmonella biofilms, which enhance colonization, persistence, and survival of bacteria on equipment. The contaminated food products resulting from bacteria on equipment offset the economic competition of food industries and partner institutions in international business. The most worldwide prevalent broad-range Salmonella serovars affecting humans are Salmonella Typhimurium and Salmonella Enteritidis, and poultry products, among others, are the primary source of infection. The broader range of Salmonella serovars creates concern over multiple strategies for preventing and controlling Salmonella contamination in foods to enhance food safety for humans. Among the strategies for preventing and controlling Salmonella spread in animal and plant products include biosecurity measures, isolation and quarantine, epidemiological surveillance, farming systems, herbs and spices, and vaccination. Other measures are the application of phages, probiotics, prebiotics, and nanoparticles reduced and capped with antimicrobial agents. Therefore, Salmonella-free products, such as beef, pork, poultry meat, eggs, milk, and plant foods, such as vegetables and fruits, will prevent humans from Salmonella infection. This review explains Salmonella infection in humans caused by consuming contaminated foods and the interventions against Salmonella contamination in foods to enhance food safety and quality for humans.
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Affiliation(s)
- Mwanaisha Mkangara
- Department of Science and Laboratory Technology, Dar es Salaam Institute of Technology, P.O. Box 2958, Dar es Salaam, Tanzania
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4
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Karim MR, Zakaria Z, Hassan L, Faiz NM, Ahmad NI. The occurrence and molecular detection of mcr-1 and mcr-5 genes in Enterobacteriaceae isolated from poultry and poultry meats in Malaysia. Front Microbiol 2023; 14:1208314. [PMID: 37601372 PMCID: PMC10435970 DOI: 10.3389/fmicb.2023.1208314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 07/12/2023] [Indexed: 08/22/2023] Open
Abstract
The advent of antimicrobials-resistant (AMR), including colistin-resistant bacteria, poses a significant challenge to animal and human health, food safety, socio-economic growth, and the global environment. This study aimed to ascertain the colistin resistance prevalence and molecular mechanisms of colistin resistance in Enterobacteriaceae. The colistin resistance was determined using broth microdilution assay, PCR; and Sanger sequencing of mcr genes responsible for colistin resistance in Enterobacteriaceae (n = 627), including Escherichia coli (436), Salmonella spp. (n = 140), and Klebsiella pneumoniae (n = 51), obtained from chicken and chicken meats. Out of 627 Enterobacteriaceae, 8.6% of isolates exhibited colistin resistance phenotypically. Among these colistin resistant isolates, 9.3% (n = 37) were isolated from chicken meat, 7.2% (n = 11) from the cloacal swab of chicken and 7.9% (n = 6) from the litter samples. Overall, 12.96% of colistin-resistant isolates were positive with mcr genes, in which mcr-1 and mcr-5 genes were determined in 11.11% and 1.85% of colistin-resistant isolates, respectively. The E. coli isolates obtained from chicken meats, cloacal swabs and litter samples were found positive for mcr-1, and Salmonella spp. originated from the chicken meat sample was observed with mcr-5, whereas no mcr genes were observed in K. pneumoniae strains isolated from any of the collected samples. The other colistin resistance genes, including mcr-2, mcr-3, mcr-4, mcr-6, mcr-7, mcr-8, mcr-9, and mcr-10 were not detected in the studied samples. The mcr-1 and mcr-5 genes were sequenced and found to be 100% identical to the mcr-1 and mcr-5 gene sequences available in the NCBI database. This is the first report of colistin resistance mcr-5 gene in Malaysia which could portend the emergence of mcr-5 harboring bacterial strains for infection. Further studies are needed to characterize the mr-5 harbouring bacteria for the determination of plasmid associated with mcr-5 gene.
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Affiliation(s)
- Md Rezaul Karim
- Department of Veterinary Pathology & Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
- Bangladesh Livestock Research Institute, Dhaka, Bangladesh
| | - Zunita Zakaria
- Department of Veterinary Pathology & Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
- Institute of Bioscience, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
| | - Latiffah Hassan
- Department of Veterinary Laboratory Diagnostics, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
| | - Nik Mohd Faiz
- Department of Veterinary Clinical Studies, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
| | - Nur Indah Ahmad
- Department of Veterinary Pathology & Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, UPM, Serdang, Selangor, Malaysia
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Gao X, Yu J, Chang L, Wang Y, Sun X, Mu G, Qian F. In vitro antibacterial activity of Bacillus coagulans T242 on Caco-2 cells infected with Salmonella Typhimurium. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
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6
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Multiple antibiotic-resistant Salmonella enterica serovars Enteritidis and Typhimurium in ready-to-eat battered street foods, and their survival under simulated gastric fluid and microwave heating. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Molecular Epidemiology and Virulence of Non-Typhoidal Salmonella in Armenia. Int J Mol Sci 2022; 23:ijms23169330. [PMID: 36012591 PMCID: PMC9409446 DOI: 10.3390/ijms23169330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 08/16/2022] [Accepted: 08/16/2022] [Indexed: 11/24/2022] Open
Abstract
In this work, we analysed human isolates of nontyphoidal Salmonella enterica subsp. enterica (NTS), which were collected from salmonellosis cases in Armenia from 1996 to 2019. This disease became a leading food-borne bacterial infection in the region, with the younger age groups especially affected. The isolates were characterised by serotyping, Enterobacterial Repetitive Intergenic Consensus (ERIC-PCR) typing, and whole genome sequencing (WGS). The main serotypes were S. Typhimurium, S. Enteritidis, and S. Arizonae. ERIC-PCR indicated a high degree of clonality among S. Typhimurium strains, which were also multidrug-resistant and produced extended spectrum beta-lactamases. During the study period, the frequency of S. Typhimurium and S. Arizonae isolations decreased, but with the increase in S. Enteritidis and other NTS. A total of 42 NTS isolates were subjected to WGS and explored for virulence-related traits and the corresponding genetic elements. Some virulence and genetic factors were shared by all NTS serotypes, while the main differences were attributed to the serotype-specific diversity of virulence genes, SPIs, virulence plasmids, and phages. The results indicated the variability and dynamics in the epidemiology of salmonellosis and a high virulence potential of human NTS isolates circulating in the region.
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Xiong Q, Liu J, Xie G, Mu D, Feng X, Xu H. Blocker-tailed PCR coupled with rolling circle amplification for fluorescent detection of emetic Bacillus cereus in milk. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Barron-Montenegro R, Rivera D, Serrano MJ, García R, Álvarez DM, Benavides J, Arredondo F, Álvarez FP, Bastías R, Ruiz S, Hamilton-West C, Castro-Nallar E, Moreno-Switt AI. Long-Term Interactions of Salmonella Enteritidis With a Lytic Phage for 21 Days in High Nutrients Media. Front Cell Infect Microbiol 2022; 12:897171. [PMID: 35711664 PMCID: PMC9196899 DOI: 10.3389/fcimb.2022.897171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Accepted: 04/19/2022] [Indexed: 11/21/2022] Open
Abstract
Salmonella spp. is a relevant foodborne pathogen with worldwide distribution. To mitigate Salmonella infections, bacteriophages represent an alternative to antimicrobials and chemicals in food animals and food in general. Bacteriophages (phages) are viruses that infect bacteria, which interact constantly with their host. Importantly, the study of these interactions is crucial for the use of phages as a mitigation strategy. In this study, experimental coevolution of Salmonella Enteritidis (S. Enteritidis) and a lytic phage was conducted in tryptic soy broth for 21 days. Transfer to fresh media was conducted daily and every 24 hours, 2 mL of the sample was collected to quantify Salmonella OD600 and phage titter. Additionally, time-shift experiments were conducted on 20 colonies selected on days 1, 12, and 21 to evaluate the evolution of resistance to past (day 1), present (day 12), and future (day 21) phage populations. The behavior of the dynamics was modeled and simulated with mathematical mass-action models. Bacteria and phage from days 1 and 21 were sequenced to determine the emergence of mutations. We found that S. Enteritidis grew for 21 days in the presence and absence of the phage and developed resistance to the phage from day 1. Also, the phage was also able to survive in the media for 21 days, however, the phage titer decreased in approx. 3 logs PFU/mL. The stability of the lytic phage population was consistent with the leaky resistance model. The time-shift experiments showed resistance to phages from day 1 of at least 85% to the past, present, and future phages. Sequencing of S. Enteritidis showed mutations in genes involved in lipopolysaccharide biosynthesis genes rfbP and rfbN at day 21. The phage showed mutations in the tail phage proteins responsible for recognizing the cell surface receptors. These results suggest that interactions between bacteria and phage in a rich resource media generate a rapid resistance to the infective phage but a fraction of the population remains susceptible. Interactions between Salmonella and lytic phages are an important component for the rational use of phages to control this important foodborne pathogen.
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Affiliation(s)
- Rocio Barron-Montenegro
- Escuela de Medicina Veterinaria, Facultad de Agronomía e Ingeniería Forestal, Facultad de Ciencias Biológicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Dácil Rivera
- Escuela de Medicina Veterinaria, Universidad Andres Bello, Santiago, Chile
| | - María Jesus Serrano
- Escuela de Medicina Veterinaria, Facultad de Agronomía e Ingeniería Forestal, Facultad de Ciencias Biológicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Medicina Preventiva, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago, Chile
| | - Rodrigo García
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
- Department of Biology, Emory University, Atlanta, GA, United States
| | - Diana M. Álvarez
- Escuela de Medicina Veterinaria, Facultad de Agronomía e Ingeniería Forestal, Facultad de Ciencias Biológicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Julio Benavides
- Facultad de Ciencias de la Vida, Universidad Andres Bello, Santiago, Chile
- MIVEGEC, MIVEGEC, IRD, CNRS, Université de Montpellier, Montpellier, France
| | - Fernanda Arredondo
- Centro de Bioinformática y Biología Integrativa, Universidad Andres Bello, Santiago, Chile
| | - Francisca P. Álvarez
- Escuela de Medicina Veterinaria, Facultad de Agronomía e Ingeniería Forestal, Facultad de Ciencias Biológicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Roberto Bastías
- Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
| | - Soledad Ruiz
- Departamento de Medicina Preventiva, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago, Chile
- Núcleo de Investigaciones Aplicadas en Ciencias Veterinarias y Agronómicas, Facultad de Medicina Veterinaria y Agronomía, Universidad de Las Américas, Santiago, Chile
| | - Christopher Hamilton-West
- Departamento de Medicina Preventiva, Facultad de Ciencias Veterinarias y Pecuarias, Universidad de Chile, Santiago, Chile
| | - Eduardo Castro-Nallar
- Instituto de Investigaciones Interdisciplinarias, Universidad de Talca, Talca, Chile
- Departamento de Microbiología, Facultad de Ciencias de la Salud, Universidad de Talca, Talca, Chile
| | - Andrea I. Moreno-Switt
- Escuela de Medicina Veterinaria, Facultad de Agronomía e Ingeniería Forestal, Facultad de Ciencias Biológicas, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- *Correspondence: Andrea I. Moreno-Switt,
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Zhu S, Song Y, Pei J, Xue F, Cui X, Xiong X, Li C. The application of photodynamic inactivation to microorganisms in food. Food Chem X 2021; 12:100150. [PMID: 34761205 PMCID: PMC8566761 DOI: 10.1016/j.fochx.2021.100150] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/09/2021] [Accepted: 10/25/2021] [Indexed: 12/27/2022] Open
Abstract
Recent progresses in the development of photodynamic inactivation (PDI) of bacteria were summarized. Key factors influencing the PDI effects were firstly reviewed. Photosensitizers which can be applied in food products for PDI are summarized. Application of PDI in various food substrates are also reviewed.
Nowadays, food safety issues have drawn increased attention due to the continual occurrence of infectious diseases caused by foodborne pathogens, which is an important factor causing food safety hazard. Meanwhile, the emergence of an increasing number of antibiotic-resistant pathogens is a worrisome phenomenon. Therefore, it is imperative to find new technologies with low-cost to inactivate pathogenic microorganisms and prevent cross-contamination. Compared with traditional preservatives, photodynamic inactivation (PDI) has emerged as a novel and promising strategy to eliminate foodborne pathogens with advantages such as non-toxic and low microbial resistance, which also meets the demand of current consumers for green treatment. Over the past few years, reports of using this technology for food safety have increased rapidly. This review summarizes recent progresses in the development of photodynamic inactivation of foodborne microorganisms. The mechanisms, factors influencing PDI and the application of different photosensitizers (PSs) in different food substrates are reviewed.
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Affiliation(s)
- Shengyu Zhu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Yukang Song
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Jiliu Pei
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Feng Xue
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, PR China
| | - Xiaowen Cui
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Xiaohui Xiong
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Chen Li
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
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Godínez-Oviedo A, Cabrera-Díaz E, Palacios-Marmolejo A, Pérez-Covarrubias OB, Vargas-Daniel RC, Tamplin ML, Bowman JP, Hernández-Iturriaga M. Detection, quantification, and characterization of Salmonella enterica in mango, tomato, and raw chicken purchased in the central region of Mexico. J Food Sci 2021; 87:370-382. [PMID: 34954835 DOI: 10.1111/1750-3841.16003] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 11/18/2021] [Accepted: 11/19/2021] [Indexed: 11/29/2022]
Abstract
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. PRACTICAL APPLICATION: Data on the prevalence and concentration of Salmonella enterica obtained in this study can be used to estimate the exposure assessment for the consumption of mango, tomato, and chicken in the central region of Mexico. In addition, the characteristics of the S. enterica isolates could be used to select representative strains for future studies to evaluate the intraspecies variability.
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Affiliation(s)
- Angélica Godínez-Oviedo
- Departamento de Investigación y Posgrado de Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas S/N, Querétaro, México
| | - Elisa Cabrera-Díaz
- Departamento de Salud Pública, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, México
| | | | - Olga Berenice Pérez-Covarrubias
- Departamento de Salud Pública, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Zapopan, México
| | | | - Mark L Tamplin
- Food Safety and Innovation Centre, Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Australia
| | - John P Bowman
- Food Safety and Innovation Centre, Tasmanian Institute of Agriculture, University of Tasmania, Hobart, Australia
| | - Montserrat Hernández-Iturriaga
- Departamento de Investigación y Posgrado de Alimentos, Facultad de Química, Universidad Autónoma de Querétaro, Centro Universitario Cerro de las Campanas S/N, Querétaro, México
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Culture dependent and independent detection of multiple extended beta-lactamase producing and biofilm forming Salmonella species from leafy vegetables. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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13
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Assessment of toxic effect of
Centella asiatica
extract and its application as natural preservative in fresh‐cut mango, pear and cabbage. J FOOD PROCESS PRES 2021. [DOI: 10.1111/jfpp.15824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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14
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Ye Q, Shang Y, Chen M, Pang R, Li F, Wang C, Xiang X, Zhou B, Zhang S, Zhang J, Wu S, Xue L, Ding Y, Wu Q. Identification of new serovar-specific detection targets against salmonella B serogroup using large-scale comparative genomics. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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15
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Kawarizadeh A, Pourmontaseri M, Farzaneh M, Hosseinzadeh S, Ghaemi M, Tabatabaei M, Pourmontaseri Z, Pirnia MM. Interleukin-8 gene expression and apoptosis induced by Salmonella Typhimurium in the presence of Bacillus probiotics in the epithelial cell. J Appl Microbiol 2020; 131:449-459. [PMID: 33058340 DOI: 10.1111/jam.14898] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 09/15/2020] [Accepted: 10/12/2020] [Indexed: 12/11/2022]
Abstract
AIMS This study aimed to evaluate the effects of three Bacillus probiotics on Salmonella Typhimurium, and interleukin-8 (IL-8) gene expression in the co-culture of the Bacillus and the pathogen in vitro. METHODS AND RESULTS Bacillus subtilis, Bacillus indicus and Bacillus coagulans were initially turned to spore and heat-inactivated forms. The cellular damages of the probiotics on the HT-29 cells were investigated individually and in combination with S. Typhimurium using 3-(4,5 dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) and fluorescence assays. To extract cell free supernatants (CFS) of the probiotics, they were cultured in selective media. The inhibitory activity of CFSs were then assayed against the pathogen. The gene expression of IL-8 of the HT-29 cells was evaluated by real-time PCR in all the groups. The results showed that the CFSs of three probiotics could inhibit the growth of S. Typhimurium by more than 50%. Inhibitory effects of B. indicus and B. subtilis CFSs were related to the production of pepsin-sensitive compounds, except B. coagulans in which the high inhibitory effect was due to organic acids. The spores of the three probiotics and the heat-inactivated forms of B. subtilis and B. coagulans could reduce the cytotoxicity of S. Typhimurium. The cell viability also increased applying both forms probiotics against the pathogen. In all co-culture groups, the IL-8 gene expression induced by S. Typhimurium was reduced. CONCLUSIONS The three Bacillus probiotics can be considered as proper candidates for the prevention and treatment of S. Typhimurium food poisoning. SIGNIFICANCE AND IMPACT OF THE STUDY Applying probiotics as live bacteria is universally noted in foods. This study tried to discover the effects of Bacillus probiotics in the form of spore or even heat-killed bacteria against S. Typhimurium and evaluate ratio of IL-8 gene expression in cell culture. The most effective Bacillus probiotic will be recommended. This approach will help to use probiotics as nonvegetative cells in foods to fight gastrointestinal pathogens.
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Affiliation(s)
- A Kawarizadeh
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran.,Department of Food Hygiene and Public Health, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - M Pourmontaseri
- Department of Food Hygiene and Public Health, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - M Farzaneh
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - S Hosseinzadeh
- Department of Food Hygiene and Public Health, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - M Ghaemi
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - M Tabatabaei
- Department of Pathobiology, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
| | - Z Pourmontaseri
- Department of Infectious Diseases and Tropical Medicine, Fasa University of Medical Science, Fasa, Iran
| | - M M Pirnia
- Institute of Biophysics and Biochemistry Research, Tehran University, Tehran, Iran
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16
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Impedimetric Biosensor Based on a Hechtia argentea Lectin for the Detection of Salmonella spp. CHEMOSENSORS 2020. [DOI: 10.3390/chemosensors8040115] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A sensitive electrochemical detection method for Salmonella spp. was described, based on the use of Hechtia argentea lectin immobilised on a screen-printed gold electrode. The lectin was extracted from Hechtia argentea, a plant belonging to the Bromeliaceae family. The lectin with molecular weight near 27.4 kDa showed selectivity towards D-mannose, contained on the lipopolysaccharide cell wall of Salmonella spp. Carbohydrate selectivity of the lectin was measured as a change in impedance with respect to concentration. The binding of the bacteria to the biosensor surface increased impedance with increasing concentrations of Salmonella spp., achieving a linear range of detection of 15–2.57 × 107 CFU mL−1, with a limit of detection of 5 CFU mL−1. Increases in impedance were measured using electrochemical impedance spectroscopy and analysed using Nyquist plots. The biosensor was applied in analysis of hen egg samples, and the results were consistent with those obtained using the official analysis methodology.
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17
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Persistence of Yersinia enterocolitica bio-serotype 4/O:3 in a pork production chain in Minas Gerais, Brazil. Food Microbiol 2020; 94:103660. [PMID: 33279085 DOI: 10.1016/j.fm.2020.103660] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Revised: 10/05/2020] [Accepted: 10/09/2020] [Indexed: 11/20/2022]
Abstract
Yersinia enterocolitica bio-serotype 4/O:3 was previously identified in a pork production chain in Brazil and the obtained isolates presented high identity by pulsed-field gel electrophoresis (PFGE, XbaI). For the current study, an additional 147 porcine samples (tonsils = 100, palate = 30, head meat = 17) were collected from the same pork production chain 2-years later and 14 (9.5%) tested positive for Y. enterocolitica. Isolates (n = 24, 1 to 2 per positive sample) were bio-serotype 4/O:3 and harbored virulence genes ail, inv, wbbU, virF, myfA, ystA, ymoA, hreP and sat, and the multidrug resistance related genes emrD, marC and yfhD. PFGE (XbaI) demonstrated no differences among isolates (100% similarity) and were identical to some Y. enterocolitica isolates (n = 13) obtained previously from the same pork chain. A second PFGE analysis (NotI) confirmed the high degree of similarity among isolates obtained over time, demonstrating the persistence of an apparent clonal Y. enterocolitica bio-serotype 4/O:3 in this particular pork production chain in Brazil.
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18
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Khan F, Javaid A, Kim YM. Functional Diversity of Quorum Sensing Receptors in Pathogenic Bacteria: Interspecies, Intraspecies and Interkingdom Level. Curr Drug Targets 2020; 20:655-667. [PMID: 30468123 DOI: 10.2174/1389450120666181123123333] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Revised: 11/16/2018] [Accepted: 11/16/2018] [Indexed: 01/17/2023]
Abstract
The formation of biofilm by pathogenic bacteria is considered as one of the most powerful mechanisms/modes of resistance against the action of several antibiotics. Biofilm is formed as a structural adherent over the surfaces of host, food and equipments etc. and is further functionally coordinated by certain chemicals produced itself. These chemicals are known as quorum sensing (QS) signaling molecules and are involved in the cross talk at interspecies, intraspecies and interkingdom levels thus resulting in the production of virulence factors leading to pathogenesis. Bacteria possess receptors to sense these chemicals, which interact with the incoming QS molecules. It is followed by the secretion of virulence molecules, regulation of bioluminescence, biofilm formation, antibiotic resistance development and motility behavioral responses. In the natural environment, different bacterial species (Gram-positive and Gram-negative) produce QS signaling molecules that are structurally and functionally different. Recent and past research shows that various antagonistic molecules (naturally and chemically synthesized) are characterized to inhibit the formation of biofilm and attenuation of bacterial virulence by blocking the QS receptors. This review article describes about the diverse QS receptors at their structural, functional and production levels. Thus, by blocking these receptors with inhibitory molecules can be a potential therapeutic approach to control pathogenesis. Furthermore, these receptors can also be used as a structural platform to screen the most potent inhibitors with the help of bioinformatics approaches.
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Affiliation(s)
- Fazlurrahman Khan
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan 48513, South Korea.,Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida 201306, U.P, India
| | - Aqib Javaid
- Department of Biotechnology, School of Engineering and Technology, Sharda University, Greater Noida 201306, U.P, India
| | - Young-Mog Kim
- Marine-Integrated Bionics Research Center, Pukyong National University, Busan 48513, South Korea.,Department of Food Science and Technology, Pukyong National University, Busan 48513, South Korea
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19
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Eran Z, Akçelik M, Yazıcı BC, Özcengiz G, Akçelik N. Regulation of biofilm formation by marT in Salmonella Typhimurium. Mol Biol Rep 2020; 47:5041-5050. [PMID: 32529277 DOI: 10.1007/s11033-020-05573-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 06/05/2020] [Indexed: 11/30/2022]
Abstract
In this study, we aimed at identifying the regulatory role of marT gene, known as the regulator of misL, on 15 different biofilm-related genes in S. Typhimurium 14028 strain. We also tested the strains for their ability to form biofilm and determined the adherence characteristics of the wild type and the mutant strains of the organism on Caco-2 and HEp-2 cells. For comparative analyses of the candidate genes, individual gene mutations were created via antibiotic gene cassette insertion into each gene of interest. marT gene was cloned behind an arabinose inducible BAD promoter in order to control marT expression. This recombinant plasmid was transfer into each of the 15 mutant strains to investigate the level of expression of each single gene in the presence and absence of marT induction. Besides determination of variations in biofilm formation by each mutant strain, the attachment characteristics of them onto Caco-2 and HEp-2 cell lines were also reported. As a result of attachments experiments on polystyrene surfaces, it was determined that the biofilm production capacity of each mutant strain decreased in a statistically significant manner (p < 0.05). QRT-PCR trials indicated that the marT gene regulates the expression of 14 genes, namely fimA, fimD, fimF, fimH, stjB, stjC, csgA, csgD, ompC, sthB, sthE, rmbA, fliZ and yaiC, in a positive manner. QRT-PCR studies were also revealed that the MarT protein positively regulates its own promoter. When the adherence characteristics of the mutant strains and the wild-type were investigated by using Caco-2 and HEp-2 cells, it was determined that the single gene mutations did have no effect on bacterial adhesion. In view of our mutational analyses and biofilm formation studies, it was concluded that fliZ, ompC, rmbA, stjB and stjC genes are related with biofilm formation in Salmonella, besides other cellular functions of them. Taken together, our data suggested that the regulatory role of MarT protein is not only restricted to the regulation of misL gene expression, but it rather acts as a general regulator on the biofilm-related genes in Salmonella.
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Affiliation(s)
- Zeynep Eran
- Department of Biology, Middle East Technical University, Ankara, Turkey
| | | | | | - Gülay Özcengiz
- Department of Biology, Middle East Technical University, Ankara, Turkey
| | - Nefise Akçelik
- Biotechnology Institute, Ankara University, Ankara, Turkey.
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20
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Pellegrini M, Rossi C, Palmieri S, Maggio F, Chaves-López C, Lo Sterzo C, Paparella A, De Medici D, Ricci A, Serio A. Salmonella enterica Control in Stick Carrots Through Incorporation of Coriander Seeds Essential Oil in Sustainable Washing Treatments. FRONTIERS IN SUSTAINABLE FOOD SYSTEMS 2020. [DOI: 10.3389/fsufs.2020.00014] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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21
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Cheeveewattanagul N, Tien TT, Rijiravanich P, Surareungchai W, Somasundrum M. Photostable methylene blue-loaded silica particles used as label for immunosorbent assay of Salmonella Typhimurium. Biotechnol Appl Biochem 2019; 66:842-849. [PMID: 31228877 DOI: 10.1002/bab.1796] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Accepted: 06/21/2019] [Indexed: 12/27/2022]
Abstract
Salmonella Typhimurium is a major cause of food poisoning. To solve the limitations of the routine enzyme linked immunosorbent assay such as laborious assay procedure, lack of long-term enzyme stability, and insufficient sensitivity, we provided a non-enzymatic colorimetric immunosorbent assay platform to overcome these problems. The highly photostable redox dye particles was constructed by silica particles (diameter = 598 ± 14.4 nm) loaded with methylene blue (Si-MB) and applied to be a label for immunoassay of S. Typhimurium. The sandwich assay format involved incubation of an analyte in a microplate wells modified with monoclonal anti-Salmonella, followed by exposure to a polyclonal anti-Salmonella/Si-MB bioconjugate and then measurement of absorbance at 598 nm. The platform had an assay time of 20 min, could detect heat-killed Salmonella with a limit of detection of 48 CFU mL-1 , and gave good recoveries in milk. The labels could be stored at 4 °C for 70 days without any deterioration.
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Affiliation(s)
- Nopchulee Cheeveewattanagul
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (KMUTT), Bangkhuntien Campus, Bangkok, Thailand
| | - Tran Thanh Tien
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (KMUTT), Bangkhuntien Campus, Bangkok, Thailand.,Department of Veterinary Biosciences, Faculty of Animal Science and Veterinary Medicine, Nong Lam University, Ho Chi Minh City, Vietnam
| | - Patsamon Rijiravanich
- Biosciences and System Biology Team, Biochemical Engineering and System Biology Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency at KMUTT, Bangkhuntien Campus, Bangkok, Thailand
| | - Werasak Surareungchai
- School of Bioresources and Technology, King Mongkut's University of Technology Thonburi (KMUTT), Bangkhuntien Campus, Bangkok, Thailand.,Nanoscience and Nanotechnology Graduate Program, Faculty of Science, King Mongkut's University of Technology Thonburi (KMUTT), Bangkhuntien Campus, Bangkok, Thailand
| | - Mithran Somasundrum
- Biosciences and System Biology Team, Biochemical Engineering and System Biology Research Group, National Center for Genetic Engineering and Biotechnology, National Science and Technology Development Agency at KMUTT, Bangkhuntien Campus, Bangkok, Thailand
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22
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Sharma J, Kumar D, Hussain S, Pathak A, Shukla M, Prasanna Kumar V, Anisha P, Rautela R, Upadhyay A, Singh S. Prevalence, antimicrobial resistance and virulence genes characterization of nontyphoidal Salmonella isolated from retail chicken meat shops in Northern India. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.01.021] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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23
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Salazar GA, Guerrero-López R, Lalaleo L, Avilés-Esquivel D, Vinueza-Burgos C, Calero-Cáceres W. Presence and diversity of Salmonella isolated from layer farms in central Ecuador. F1000Res 2019; 8:235. [PMID: 31069068 PMCID: PMC6480948 DOI: 10.12688/f1000research.18233.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 04/04/2019] [Indexed: 11/20/2022] Open
Abstract
Background: Given the considerable role played by Salmonella in the incidence of food contamination, around the world, surveillance of this infection is prioritized by both food producers and health care authorities. Data remains insufficient concerning the prevalence of Salmonella in poultry systems in Ecuador and in Latin America in general. Methods: In this study, we evaluated the presence and diversity of Salmonella serovars in samples taken from 21 layer farms and backyard layers in central Ecuador during August-November 2017. Salmonella was isolated following standardized methods (ISO 6579) and the serovar determination was carried out by PCR. Results: A significant presence of Salmonella was detected in the 21 farms evaluated, with a frequency of 76% (95% confidence interval (CI): 53-92) in environmental surfaces, 33% (95%CI: 15-57) in pooled cloacal swabs from layer hens, 33% (95% CI: 13-59) on feed samples, and 10% (95%CI: 1-30) in backyard layer feces from traditional local markets. The dominant serovars detected were S. Infantis and S. Typhimurium. Conclusions: This study forms a basis for further surveillance of Salmonella serovars in layer farms in central Ecuador.
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Affiliation(s)
- Gabriela A Salazar
- UTA RAM OneHealth Group, Faculty of Agricultural Sciences, Universidad Técnica de Ambato, Cevallos, Ecuador
| | - Ricardo Guerrero-López
- UTA RAM OneHealth Group, Faculty of Agricultural Sciences, Universidad Técnica de Ambato, Cevallos, Ecuador
| | - Liliana Lalaleo
- UTA RAM OneHealth Group, Faculty of Agricultural Sciences, Universidad Técnica de Ambato, Cevallos, Ecuador
| | - Diana Avilés-Esquivel
- UTA RAM OneHealth Group, Faculty of Agricultural Sciences, Universidad Técnica de Ambato, Cevallos, Ecuador
| | | | - William Calero-Cáceres
- UTA RAM OneHealth Group, Faculty of Agricultural Sciences, Universidad Técnica de Ambato, Cevallos, Ecuador
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24
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25
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Dlamini BS, Montso PK, Kumar A, Ateba CN. Distribution of virulence factors, determinants of antibiotic resistance and molecular fingerprinting of Salmonella species isolated from cattle and beef samples: suggestive evidence of animal-to-meat contamination. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:32694-32708. [PMID: 30244441 DOI: 10.1007/s11356-018-3231-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2017] [Accepted: 09/13/2018] [Indexed: 06/08/2023]
Abstract
In this study, three hundred presumptive Salmonella strains isolated from cattle faeces and raw beef samples were subjected to both preliminary and confirmatory tests specific for Salmonella. PCR assays revealed that 100%, 20% and 26.7% of the isolates were positive for 16S rRNA, fliC and fljB gene fragments, respectively. Large proportions (62.4 to 94.3%) of these isolates were multiple antibiotic resistant (MAR) strains that were resistant to three or more antibiotics belonging to different classes. MAR phenotypes Ab1, Ab2, Ab3, Ab7, Ab8, Ab9, Ab26 and Ab27 were dominant among the isolates. Cluster analysis of antibiotic inhibition zone diameter data revealed two major clusters (clusters 1 and 2), and each cluster contained two sub-clusters (1A, 1B, 2A and 2B). PCR data revealed that 27.1% and 30.7% of the isolates possessed the spvC and invA virulent genes, respectively. There was a significant correlation between the possession of MAR phenotypes and virulent gene determinants. Analysis of restriction fragment length polymorphism (RFLP) of 16S rRNA gene fragments using EcoRI and HaeIII showed that large proportions of isolates from beef and cattle faeces produced similar genetic fingerprints. From these results, it is suggested that Salmonella species in cattle are transmitted to beef and, therefore, the consumption of undercooked beef could pose severe health complications on consumers. These findings provide baseline data that could be of great epidemiological importance and, thus, the need to utilise more sensitive typing tools in determining the genetic relatedness of isolates from different sources.
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Affiliation(s)
- Beauty Sicelo Dlamini
- Department of Microbiology, School of Biological Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa
| | - Peter Kotsoana Montso
- Department of Microbiology, School of Biological Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa
| | - Ajay Kumar
- Department of Microbiology, School of Biological Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa
| | - Collins Njie Ateba
- Department of Microbiology, School of Biological Sciences, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
- Food Security and Safety Niche Area, Faculty of Natural and Agricultural Sciences, North-West University, Private Bag X2046, Mmabatho, 2735, South Africa.
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26
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Occurrence of methicillin-resistant Staphylococcus aureus in raw shellfish at retail markets in Malaysia and antibacterial efficacies of black seed (Nigella sativa) oil against MRSA. Food Control 2018. [DOI: 10.1016/j.foodcont.2018.02.045] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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27
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Wang F, Mendonça A, Brehm-Stecher BF, Dickson J, DiSpirito A, Shaw A, Thomas-Popo E. Long-Term Survival Phase Cells of Salmonella Typhimurium ATCC 14028 Have Significantly Greater Resistance to Ultraviolet Radiation in 0.85% Saline and Apple Juice. Foodborne Pathog Dis 2018; 15:538-543. [PMID: 29851358 DOI: 10.1089/fpd.2018.2423] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Nonendospore-forming pathogenic bacteria in the long-term survival (LTS) phase can remain viable for months or years and may show reduced susceptibility to various antimicrobial interventions. In the present study, we investigated the response of LTS phase Salmonella enterica serovar Typhimurium (ATCC 14028) to ultraviolet (UV) radiation in 0.85% (w/v) saline and apple juice and the extent of sublethal injury in LTS phase survivors. The LTS-phase Salmonella Typhimurium cells were cultured at 35°C for 14 days in tryptic soy broth with 0.6% (w/v) yeast extract (TSBYE). Exponential- and stationary-phase cells, cultured in TSBYE (35°C) for 2.5 and 18 h, respectively, served as control samples. Cells (107 CFU [colony-forming unit]/mL) from each physiological state were exposed to UV light in saline (80 μW/cm2) and apple juice (1500 μW/cm2). The Salmonella Typhimurium survivors were plated for enumeration on either tryptic soy agar with 0.6% yeast extract or xylose-lysine-tergitol 4 (XLT4) agar and colonies counted after incubation (35°C, 24 h). Of all the growth phases tested, LTS phase cells were consistently impacted the least by UV treatment (p < 0.05). In saline, D-values of exponential, stationary, and LTS Salmonella Typhimurium were 0.35, 0.38, and 0.49 min, respectively. D-values in apple juice at pH 3.63 and pH 5.65 were 2.52, 3.19, and 3.57 min and 3.24, 3.50, and 4.18 min, respectively. UV radiation (80 μW/cm2) of Salmonella Typhimurium in saline for 2.5 min reduced the number of exponential- and stationary-phase cells by ∼7.19 and 6.30 log10 CFU/mL, respectively. In contrast, LTS cells were only reduced by 5.08 log10 CFU/mL. Among the three physiological states, LTS phase cells had the least sublethal injury in the surviving population (p < 0.05). These results indicate that the LTS state cross-protects Salmonella Typhimurium against UV radiation and should be considered in determination of the UV radiation D-value for this pathogen.
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Affiliation(s)
- Fei Wang
- 1 Interdepartmental Microbiology Graduate Program, Iowa State University , Ames, Iowa.,2 Department of Food Science and Human Nutrition, Iowa State University , Ames, Iowa
| | - Aubrey Mendonça
- 1 Interdepartmental Microbiology Graduate Program, Iowa State University , Ames, Iowa.,2 Department of Food Science and Human Nutrition, Iowa State University , Ames, Iowa
| | - Byron F Brehm-Stecher
- 1 Interdepartmental Microbiology Graduate Program, Iowa State University , Ames, Iowa.,2 Department of Food Science and Human Nutrition, Iowa State University , Ames, Iowa
| | - James Dickson
- 1 Interdepartmental Microbiology Graduate Program, Iowa State University , Ames, Iowa.,3 Department of Animal Science, Iowa State University , Ames, Iowa
| | - Alan DiSpirito
- 1 Interdepartmental Microbiology Graduate Program, Iowa State University , Ames, Iowa.,4 Department of Biochemistry, Biophysics, and Molecular Biology, Iowa State University , Ames, Iowa
| | - Angela Shaw
- 2 Department of Food Science and Human Nutrition, Iowa State University , Ames, Iowa
| | - Emalie Thomas-Popo
- 1 Interdepartmental Microbiology Graduate Program, Iowa State University , Ames, Iowa.,2 Department of Food Science and Human Nutrition, Iowa State University , Ames, Iowa
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28
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Sun Y, Cai X, Cao J, Wu Z, Pan D. Effects of 1,8-cineole on Carbohydrate Metabolism Related Cell Structure Changes of Salmonella. Front Microbiol 2018; 9:1078. [PMID: 29910778 PMCID: PMC5992416 DOI: 10.3389/fmicb.2018.01078] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2018] [Accepted: 05/07/2018] [Indexed: 11/13/2022] Open
Abstract
Salmonella is gram-negative foodborne zoonotic bacteria which triggers disease in humans. Our previous studies showed 1,8-cineole possessed remarkable antimicrobial effects on foodborne zoonotic bacteria indicating it could serve as a new source of antibiotic for Salmonella. Present study elucidated the antibacterial mechanism of 1,8-cineole by analyzing serum protein expressed by Salmonella following treatment with 1,8-cineole (0.25 mg/mL, 3 h) using isobaric tags for relative and absolute quantification (iTRAQ) with two-dimensional liquid chromatography/tandem mass spectrometry (2D-LC-MS/MS). 1,8-cineole was found to significantly damage the structure of Salmonella cell walls and membranes. A total of 3011 proteins were extracted from the experimental group, of which 435 were differentially expressed (1.5-fold) with 123 upregulated and 312 downregulated. The expressed proteins were involved in 935 intracellular biological processes, 98 cellular components, 477 molecular functions and 86 Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Among them, proteins associated with carbohydrate, nucleotide, amino acid, lipid, and energy metabolism were significantly changed following treatment with 1,8-cineole. Carbohydrate metabolism and membrane protein-related genes was down-regulated at the mRNA level when Salmonella was treated with 1,8-cineole. 1,8-cineole may be a potential antibiotic for Salmonella infections.
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Affiliation(s)
- Yangying Sun
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Ningbo University, Zhejiang, China
| | - Xiaojun Cai
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Ningbo University, Zhejiang, China
| | - Jinxuan Cao
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Ningbo University, Zhejiang, China
| | - Zhen Wu
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Ningbo University, Zhejiang, China
| | - Daodong Pan
- Key Laboratory of Animal Protein Deep Processing Technology of Zhejiang Province, Ningbo University, Zhejiang, China.,Department of Food Science and Nutrition, Jinling College, Nanjing Normal University, Nanjing, China
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29
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Sadekuzzaman M, Mizan MFR, Yang S, Kim HS, Ha SD. Application of bacteriophages for the inactivation of Salmonella spp. in biofilms. FOOD SCI TECHNOL INT 2018; 24:424-433. [DOI: 10.1177/1082013218763424] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Microbial biofilms pose a serious threat to food industry, as they are difficult to inactivate or remove owing to their inherent resistance to traditional physical and antimicrobial treatments. Bacteriophages have been suggested as promising biocontrol agents for eliminating biofilms within the food industry. The efficacy of phages (BP 1369 and BP 1370) was evaluated against Salmonella spp. in biofilms. Biofilms were grown on food (lettuce), food contact surfaces (stainless steel and rubber), and MBEC biofilm devices. The efficacy of these phages in reducing biofilms was examined following phage (108 PFU/mL) treatment for 2 h. Bacteriophage treatment reduced biofilm cells by 3.0, 2.0, and 3.0 log CFU/cm2 on stainless steel, rubber, and an MBEC device, respectively. The adhered viable cells on lettuce were reduced by more than 1.0 log CFU/cm2 with phage treatment.
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Affiliation(s)
- Mohammad Sadekuzzaman
- School of Food Science and Technology, Chung-Ang University, Anseong, South Korea
- Department of Livestock Services, Dhaka, People's Republic of Bangladesh
| | | | - Sungdae Yang
- School of Food Science and Technology, Chung-Ang University, Anseong, South Korea
| | - Hyung-Suk Kim
- School of Food Science and Technology, Chung-Ang University, Anseong, South Korea
| | - Sang-Do Ha
- School of Food Science and Technology, Chung-Ang University, Anseong, South Korea
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30
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Thung TY, Radu S, Mahyudin NA, Rukayadi Y, Zakaria Z, Mazlan N, Tan BH, Lee E, Yeoh SL, Chin YZ, Tan CW, Kuan CH, Basri DF, Wan Mohamed Radzi CWJ. Prevalence, Virulence Genes and Antimicrobial Resistance Profiles of Salmonella Serovars from Retail Beef in Selangor, Malaysia. Front Microbiol 2018; 8:2697. [PMID: 29379488 PMCID: PMC5770799 DOI: 10.3389/fmicb.2017.02697] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Accepted: 12/26/2017] [Indexed: 11/13/2022] Open
Abstract
The aim of the present study was to investigate the prevalence of Salmonella spp., Salmonella Enteritidis and Salmonella Typhimurium in retail beef from different retail markets of Selangor area, as well as, to assess their pathogenic potential and antimicrobial resistance. A total of 240 retail beef meat samples (chuck = 60; rib = 60; round = 60; sirloin = 60) were randomly collected. The multiplex polymerase chain reaction (mPCR) in combination with the most probable number (MPN) method was employed to detect Salmonella spp., S. Enteritidis and S. Typhimurium in the meat samples. The prevalence of Salmonella spp., S. Enteritidis and S. Typhimurium in 240 beef meat samples were 7.50, 1.25, and 0.83%, respectively. The microbial loads of total Salmonella was found in the range of <3 to 15 MPN/g. Eight different serovars of Salmonella were identified among the 23 isolates, and S. Agona was the predominant serovar (26.09%). Interestingly, all the Salmonella isolates were resistant to penicillin, erythromycin and vancomycin, but the sensitivity was observed for tetracycline, gentamicin and amoxicillin/clavulanic acid. All 23 isolates were resistant to at least three antibiotics. Two S. Typhimurium isolates (8.70%) exhibited the highest multiple antibiotic resistance (MAR) index value of 0.56 which shown resistance to nine antibiotics. PCR analysis of virulence genes showed that all Salmonella isolates (100%) were positive for the invA gene. Meanwhile, pefA was only identified in S. Enteritidis and S. Typhimurium. The findings in this study indicate that retail beef products tested were widely contaminated with multi-drug resistant (MDR) Salmonella and various virulence genes are present among the isolated Salmonella serovars.
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Affiliation(s)
- Tze Y Thung
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia
| | - Son Radu
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia.,Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security (ITAFoS), Universiti Putra Malaysia, Serdang, Malaysia
| | - Nor A Mahyudin
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia
| | - Yaya Rukayadi
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia
| | - Zunita Zakaria
- Department of Veterinary Pathology and Microbiology, Faculty of Veterinary Medicine, Universiti Putra Malaysia, Serdang, Malaysia
| | - Nurzafirah Mazlan
- Department of Diagnostic and Allied Science, Faculty of Health and Life Science, Management and Science University, Shah Alam, Malaysia
| | - Boon H Tan
- Division of Applied Biomedical Sciences and Biotechnology, School of Health Sciences, International Medical University, Kuala Lumpur, Malaysia
| | - Epeng Lee
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia.,Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security (ITAFoS), Universiti Putra Malaysia, Serdang, Malaysia
| | - Soo L Yeoh
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia.,Laboratory of Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security (ITAFoS), Universiti Putra Malaysia, Serdang, Malaysia
| | - Yih Z Chin
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia
| | - Chia W Tan
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, Serdang, Malaysia
| | - Chee H Kuan
- Department of Agricultural and Food Science, Faculty of Science, Universiti Tunku Abdul Rahman, Kampar, Malaysia
| | - Dayang F Basri
- Novel Antibiotic Laboratory, School of Diagnostic and Applied Health Sciences, Faculty of Health Sciences, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Che W J Wan Mohamed Radzi
- Department of Science and Technology Studies, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
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31
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Ferrari RG, Panzenhagen PHN, Conte-Junior CA. Phenotypic and Genotypic Eligible Methods for Salmonella Typhimurium Source Tracking. Front Microbiol 2017; 8:2587. [PMID: 29312260 PMCID: PMC5744012 DOI: 10.3389/fmicb.2017.02587] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 12/12/2017] [Indexed: 11/13/2022] Open
Abstract
Salmonellosis is one of the most common causes of foodborne infection and a leading cause of human gastroenteritis. Throughout the last decade, Salmonella enterica serotype Typhimurium (ST) has shown an increase report with the simultaneous emergence of multidrug-resistant isolates, as phage type DT104. Therefore, to successfully control this microorganism, it is important to attribute salmonellosis to the exact source. Studies of Salmonella source attribution have been performed to determine the main food/food-production animals involved, toward which, control efforts should be correctly directed. Hence, the election of a ST subtyping method depends on the particular problem that efforts must be directed, the resources and the data available. Generally, before choosing a molecular subtyping, phenotyping approaches such as serotyping, phage typing, and antimicrobial resistance profiling are implemented as a screening of an investigation, and the results are computed using frequency-matching models (i.e., Dutch, Hald and Asymmetric Island models). Actually, due to the advancement of molecular tools as PFGE, MLVA, MLST, CRISPR, and WGS more precise results have been obtained, but even with these technologies, there are still gaps to be elucidated. To address this issue, an important question needs to be answered: what are the currently suitable subtyping methods to source attribute ST. This review presents the most frequently applied subtyping methods used to characterize ST, analyses the major available microbial subtyping attribution models and ponders the use of conventional phenotyping methods, as well as, the most applied genotypic tools in the context of their potential applicability to investigates ST source tracking.
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Affiliation(s)
- Rafaela G. Ferrari
- Molecular and Analytical Laboratory Center, Department of Food Technology, Faculty of Veterinary, Universidade Federal Fluminense, Niterói, Brazil
- Food Science Program, Chemistry Institute, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Pedro H. N. Panzenhagen
- Molecular and Analytical Laboratory Center, Department of Food Technology, Faculty of Veterinary, Universidade Federal Fluminense, Niterói, Brazil
- Food Science Program, Chemistry Institute, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Carlos A. Conte-Junior
- Molecular and Analytical Laboratory Center, Department of Food Technology, Faculty of Veterinary, Universidade Federal Fluminense, Niterói, Brazil
- Food Science Program, Chemistry Institute, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
- National Institute of Health Quality Control, Fundação Oswaldo Cruz, Rio de Janeiro, Brazil
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32
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Kuan CH, Rukayadi Y, Ahmad SH, Wan Mohamed Radzi CWJ, Thung TY, Premarathne JMKJK, Chang WS, Loo YY, Tan CW, Ramzi OB, Mohd Fadzil SN, Kuan CS, Yeo SK, Nishibuchi M, Radu S. Comparison of the Microbiological Quality and Safety between Conventional and Organic Vegetables Sold in Malaysia. Front Microbiol 2017; 8:1433. [PMID: 28824567 PMCID: PMC5534447 DOI: 10.3389/fmicb.2017.01433] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2017] [Accepted: 07/14/2017] [Indexed: 11/13/2022] Open
Abstract
Given the remarkable increase of public interest in organic food products, it is indeed critical to evaluate the microbiological risk associated with consumption of fresh organic produce. Organic farming practices including the use of animal manures may increase the risk of microbiological contamination as manure can act as a vehicle for transmission of foodborne pathogens. This study aimed to determine and compare the microbiological status between organic and conventional fresh produce at the retail level in Malaysia. A total of 152 organic and conventional vegetables were purchased at retail markets in Malaysia. Samples were analyzed for mesophilic aerobic bacteria, yeasts and molds, and total coliforms using conventional microbiological methods. Combination methods of most probable number-multiplex polymerase chain reaction (MPN-mPCR) were used to detect and quantify foodborne pathogens, including Escherichia coli O157:H7, Shiga toxin-producing E. coli (STEC), Listeria monocytogenes, Salmonella Typhimurium, and Salmonella Enteritidis. Results indicated that most types of organic and conventional vegetables possessed similar microbial count (P > 0.05) of mesophilic aerobic bacteria, yeasts and molds, and total coliforms. E. coli O157:H7 and S. Typhimurium were not detected in any sample analyzed in this study. Among the 152 samples tested, only the conventional lettuce and organic carrot were tested positive for STEC and S. Enteritidis, respectively. L. monocytogenes were more frequently detected in both organic (9.1%) and conventional vegetables (2.7%) as compared to E. coli O157:H7, S. Typhimurium, and S. Enteritidis. Overall, no trend was shown that either organically or conventionally grown vegetables have posed greater microbiological risks. These findings indicated that one particular type of farming practices would not affect the microbiological profiles of fresh produce. Therefore, regardless of farming methods, all vegetables should be subjected to appropriate post-harvest handling practices from farm to fork to ensure the quality and safety of the fresh produce.
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Affiliation(s)
- Chee-Hao Kuan
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
| | - Yaya Rukayadi
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
| | - Siti H. Ahmad
- Department of Crop Science, Faculty of Agriculture, Universiti Putra MalaysiaSerdang, Malaysia
| | - Che W. J. Wan Mohamed Radzi
- Department of Science and Technology Studies, Faculty of Science, University of MalayaKuala Lumpur, Malaysia
| | - Tze-Young Thung
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
| | | | - Wei-San Chang
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
| | - Yuet-Ying Loo
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
| | - Chia-Wanq Tan
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
| | - Othman B. Ramzi
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
| | - Siti N. Mohd Fadzil
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
| | | | - Siok-Koon Yeo
- School of Biosciences, Taylor's University LakesideSubang Jaya, Malaysia
| | | | - Son Radu
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra MalaysiaSerdang, Malaysia
- Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra MalaysiaSeri Kembangan, Malaysia
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33
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Kim SA, Park SH, Lee SI, Ricke SC. Development of a rapid method to quantify Salmonella Typhimurium using a combination of MPN with qPCR and a shortened time incubation. Food Microbiol 2017; 65:7-18. [PMID: 28400022 DOI: 10.1016/j.fm.2017.01.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Revised: 12/16/2016] [Accepted: 01/25/2017] [Indexed: 10/20/2022]
Abstract
A novel method was developed for the specific quantification of S. Typhimurium using a most-probable-number (MPN) combined with qPCR and a shortened incubation time (MPN-qPCR-SIT). For S. Typhimurium enumeration, dilutions of samples were transferred into three wells on a microtiter plate and the plate was incubated for 4 h. The S. Typhimurium presence in the wells was identified using a qPCR and populations were determined based on an MPN calculation. The R2 between the MPN-qPCR-SIT and conventional MPN exhibited a high level of correlation (0.9335-0.9752), suggesting that the MPN-qPCR-SIT offers a reliable alternative method for S. Typhimurium quantification. Although plating and qPCR were limited in their ability to detect low levels of S. Typhimurium (e.g. 0.18 log MPN/ml), these levels could be successfully detected with the MPN-qPCR-SIT. Chicken breast samples inoculated with S. Typhimurium were incubated at 0, 4, and 24 h and incubated samples were subjected to microbiome analysis. Levels of Salmonella and Enterobacteriaceae increased significantly with incubation time. The obvious benefits of the MPN-qPCR-SIT are: 1) a further confirmation step is not required, 2) the detection limit is as low as conventional MPN, but 3) is more rapid, requiring approximately 7 h to simultaneously complete quantification.
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Affiliation(s)
- Sun Ae Kim
- Center for Food Safety, Department of Food Science, University of Arkansas, Fayetteville, AR 72704, USA
| | - Si Hong Park
- Center for Food Safety, Department of Food Science, University of Arkansas, Fayetteville, AR 72704, USA
| | - Sang In Lee
- Center for Food Safety, Department of Food Science, University of Arkansas, Fayetteville, AR 72704, USA
| | - Steven C Ricke
- Center for Food Safety, Department of Food Science, University of Arkansas, Fayetteville, AR 72704, USA.
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34
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Thung T, Mahyudin N, Basri D, Wan Mohamed Radzi C, Nakaguchi Y, Nishibuchi M, Radu S. Prevalence and antibiotic resistance of Salmonella Enteritidis and Salmonella Typhimurium in raw chicken meat at retail markets in Malaysia. Poult Sci 2016; 95:1888-93. [DOI: 10.3382/ps/pew144] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/09/2016] [Indexed: 01/06/2023] Open
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35
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Jaiswal S, Sahoo PK, Ryan D, Das JK, Chakraborty E, Mohakud NK, Suar M. Altered virulence potential of Salmonella Enteritidis cultured in different foods: A cumulative effect of differential gene expression and immunomodulation. Int J Food Microbiol 2016; 230:64-72. [PMID: 27132148 DOI: 10.1016/j.ijfoodmicro.2016.04.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 03/04/2016] [Accepted: 04/08/2016] [Indexed: 10/22/2022]
Abstract
Salmonella enterica serovars Enteritidis (S. Enteritidis) is one of the most common causes of food borne illness. Bacterial growth environment plays an important role in regulating gene expression thereby affecting the virulence profile of the bacteria. Different foods present diverse growth conditions which may affect the pathogenic potential of the bacteria. In the present study, the effect of food environments on the pathogenic potential of S. Enteritidis has been evaluated. S. Enteritidis was grown in different foods e.g. egg white, peanut butter and milk, and virulent phenotypes were compared to those grown in Luria Bertani broth. In-vivo experiments in C57BL/6 mice revealed S. Enteritidis grown in egg white did not induce significant (p<0.001) production of proinflammatory cytokines in mice and were unable to cause colitis despite efficient colonization in cecum, mesenteric lymph node, spleen and liver. Further studies revealed that bacteria grown in LB activated MAP Kinase and NFκB pathways efficiently, while those grown in egg white poorly activated the above pathways which can account for the decreased production of proinflammatory cytokines. qRT PCR analysis revealed SPI-1 effectors were downregulated in bacteria grown in egg white. Interestingly, bacteria grown in egg white showed reversal of phenotype upon change in growth media to LB. Additionally, bacteria grown in milk and peanut butter showed different degrees of virulence in mice as compared to those grown in LB media. Thus, the present study demonstrates that, S. Enteritidis grown in egg white colonizes systemic sites without causing colitis in a mouse model, while bacteria grown in milk and peanut butter show different pathogenicity profiles suggesting that food environments significantly affect the pathogenicity of S. Enteritidis.
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Affiliation(s)
- Sangeeta Jaiswal
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, Odisha, India
| | - Prakash Kumar Sahoo
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, Odisha, India
| | - Daniel Ryan
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, Odisha, India
| | - Jugal Kishore Das
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, Odisha, India
| | - Eesha Chakraborty
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, Odisha, India
| | - Nirmal Kumar Mohakud
- Kalinga Institute of Medical Sciences, KIIT University, Bhubaneswar, 751024, Odisha, India
| | - Mrutyunjay Suar
- School of Biotechnology, KIIT University, Bhubaneswar, 751024, Odisha, India.
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36
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37
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Doulgeraki AI, Papaioannou M, Nychas GJE. Targeted gene expression study of Salmonella enterica during biofilm formation on rocket leaves. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.08.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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38
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Ryan D, Pati NB, Ojha UK, Padhi C, Ray S, Jaiswal S, Singh GP, Mannala GK, Schultze T, Chakraborty T, Suar M. Global transcriptome and mutagenic analyses of the acid tolerance response of Salmonella enterica serovar Typhimurium. Appl Environ Microbiol 2015; 81:8054-65. [PMID: 26386064 PMCID: PMC4651094 DOI: 10.1128/aem.02172-15] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 09/01/2015] [Indexed: 01/18/2023] Open
Abstract
Salmonella enterica serovar Typhimurium (S. Typhimurium) is one of the leading causative agents of food-borne bacterial gastroenteritis. Swift invasion through the intestinal tract and successful establishment in systemic organs are associated with the adaptability of S. Typhimurium to different stress environments. Low-pH stress serves as one of the first lines of defense in mammalian hosts, which S. Typhimurium must efficiently overcome to establish an infection. Therefore, a better understanding of the molecular mechanisms underlying the adaptability of S. Typhimurium to acid stress is highly relevant. In this study, we have performed a transcriptome analysis of S. Typhimurium under the acid tolerance response (ATR) and found a large number of genes (∼47%) to be differentially expressed (more than 1.5-fold or less than -1.5-fold; P < 0.01). Functional annotation revealed differentially expressed genes to be associated with regulation, metabolism, transport and binding, pathogenesis, and motility. Additionally, our knockout analysis of a subset of differentially regulated genes facilitated the identification of proteins that contribute to S. Typhimurium ATR and virulence. Mutants lacking genes encoding the K(+) binding and transport protein KdpA, hypothetical protein YciG, the flagellar hook cap protein FlgD, and the nitrate reductase subunit NarZ were significantly deficient in their ATRs and displayed varied in vitro virulence characteristics. This study offers greater insight into the transcriptome changes of S. Typhimurium under the ATR and provides a framework for further research on the subject.
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Affiliation(s)
- Daniel Ryan
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Niladri Bhusan Pati
- Institute of Medical Microbiology, German Centre of Infection Research, Site Giessen-Marburg-Langen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Urmesh K Ojha
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | | | - Shilpa Ray
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Sangeeta Jaiswal
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Gajinder P Singh
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
| | - Gopala K Mannala
- Institute of Medical Microbiology, German Centre of Infection Research, Site Giessen-Marburg-Langen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Tilman Schultze
- Institute of Medical Microbiology, German Centre of Infection Research, Site Giessen-Marburg-Langen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Trinad Chakraborty
- Institute of Medical Microbiology, German Centre of Infection Research, Site Giessen-Marburg-Langen, Justus-Liebig-University Giessen, Giessen, Germany
| | - Mrutyunjay Suar
- School of Biotechnology, KIIT University, Bhubaneswar, Odisha, India
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39
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Eng SK, Pusparajah P, Ab Mutalib NS, Ser HL, Chan KG, Lee LH. Salmonella: A review on pathogenesis, epidemiology and antibiotic resistance. FRONTIERS IN LIFE SCIENCE 2015. [DOI: 10.1080/21553769.2015.1051243] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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40
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Abdalhai MH, Fernandes AM, Xia X, Musa A, Ji J, Sun X. Electrochemical Genosensor To Detect Pathogenic Bacteria (Escherichia coli O157:H7) As Applied in Real Food Samples (Fresh Beef) To Improve Food Safety and Quality Control. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:5017-5025. [PMID: 25965077 DOI: 10.1021/acs.jafc.5b00675] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The electrochemical genosensor is one of the most promising methods for the rapid and reliable detection of pathogenic bacteria. In a previous work, we performed an efficient electrochemical genosensor detection of Staphylococcus aureus by using lead sulfide nanoparticles (PbSNPs). As a continuation of this study, in the present work, the electrochemical genosensor was used to detect Escherichia coli O157:H7. The primer and probes were designed using NCBI database and Sigma-Aldrich primer and probe software. The capture and signalizing probes were modified by thiol (SH) and amine (NH2), respectively. Then, the signalizing probe was connected using cadmium sulfide nanoparticles (CdSNPs), which showed well-defined peaks after electrochemical detection. The genosensor was prepared by immobilization of complementary DNA on the gold electrode surface, which hybridizes with a specific fragment gene from pathogenic to make a sandwich structure. The conductivity and sensitivity of the sensor were increased by using multiwalled carbon nanotubes (MWCNT) that had been modified using chitosan deposited as a thin layer on the glass carbon electrode (GCE) surface, followed by a deposit of bismuth. The peak currents of E. coli O157:H7 correlated in a linear fashion with the concentration of tDNA. The detection limit was 1.97 × 10(-14) M, and the correlation coefficient was 0.989. A poorly defined current response was observed as the negative control and baseline. Our results showed high sensitivity and selectivity of the electrochemical DNA biosensor to the pathogenic bacteria E. coli O157:H7. The biosensor was also used to evaluate the detection of pathogen in real beef samples contaminated artificially. Compared with other electrochemical DNA biosensors, we conclude that this genosensor provides for very efficient detection of pathogenic bacteria. Therefore, this method may have potential application in food safety and related fields.
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Affiliation(s)
- Mandour H Abdalhai
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, China
| | - António Maximiano Fernandes
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, China
| | - Xiaofeng Xia
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, China
| | - Abubakr Musa
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, China
| | - Jian Ji
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, China
| | - Xiulan Sun
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Synergetic Innovation Center of Food Safety and Nutrition, Wuxi, Jiangsu 214122, China
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41
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Alves J, Niguma NH, de Oliveira TC. Detection of Salmonella
spp. in Eight Complex Food Matrices Using Polymerase Chain Reaction Assay. J Food Saf 2015. [DOI: 10.1111/jfs.12194] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Juliane Alves
- Department of Food Science and Technology; Londrina State University; Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitário, Caixa Postal 10.011 CEP 86057-970 Londrina Paraná Brazil
| | - Natália H. Niguma
- Department of Food Science and Technology; Londrina State University; Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitário, Caixa Postal 10.011 CEP 86057-970 Londrina Paraná Brazil
| | - Tereza C.R.M. de Oliveira
- Department of Food Science and Technology; Londrina State University; Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitário, Caixa Postal 10.011 CEP 86057-970 Londrina Paraná Brazil
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42
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Alwi NA, Ali A. Reduction of Escherichia coli O157, Listeria monocytogenes and Salmonella enterica sv. Typhimurium populations on fresh-cut bell pepper using gaseous ozone. Food Control 2014. [DOI: 10.1016/j.foodcont.2014.05.037] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Li Y, Wu C. Enhanced inactivation of Salmonella Typhimurium from blueberries by combinations of sodium dodecyl sulfate with organic acids or hydrogen peroxide. Food Res Int 2013. [DOI: 10.1016/j.foodres.2013.09.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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44
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Antibacterial Photosensitization-Based Treatment for Food Safety. FOOD ENGINEERING REVIEWS 2013. [DOI: 10.1007/s12393-013-9070-7] [Citation(s) in RCA: 94] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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45
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Guan ZP, Jiang Y, Gao F, Zhang L, Zhou GH, Guan ZJ. Rapid and simultaneous analysis of five foodborne pathogenic bacteria using multiplex PCR. Eur Food Res Technol 2013. [DOI: 10.1007/s00217-013-2039-1] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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46
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Kuan C, Goh S, Loo Y, Chang W, Lye Y, Puspanadan S, Tang J, Nakaguchi Y, Nishibuchi M, Mahyudin N, Radu S. Prevalence and quantification ofListeria monocytogenes in chicken offal at the retail level in Malaysia. Poult Sci 2013; 92:1664-9. [DOI: 10.3382/ps.2012-02974] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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47
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Sim HL, Hong YK, Yoon WB, Yuk HG. Behavior of Salmonella spp. and natural microbiota on fresh-cut dragon fruits at different storage temperatures. Int J Food Microbiol 2013; 160:239-44. [DOI: 10.1016/j.ijfoodmicro.2012.11.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2012] [Revised: 10/31/2012] [Accepted: 11/03/2012] [Indexed: 10/27/2022]
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Saeki EK, Alves J, Bonfante RC, Hirooka EY, de Oliveira TCRM. Multiplex PCR (mPCR) for the Detection of Salmonella
spp. and the Differentiation of the Typhimurium and Enteritidis Serovars in Chicken Meat. J Food Saf 2012. [DOI: 10.1111/jfs.12019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Erika Kushikawa Saeki
- Department of Food Science and Technology; State University of Londrina; Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitário, Caixa Postal 6001 CEP: 86051-990 Londrina Paraná Brasil
| | - Juliane Alves
- Department of Food Science and Technology; State University of Londrina; Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitário, Caixa Postal 6001 CEP: 86051-990 Londrina Paraná Brasil
| | - Raissa Curti Bonfante
- Department of Food Science and Technology; State University of Londrina; Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitário, Caixa Postal 6001 CEP: 86051-990 Londrina Paraná Brasil
| | - Elisa Yoko Hirooka
- Department of Food Science and Technology; State University of Londrina; Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitário, Caixa Postal 6001 CEP: 86051-990 Londrina Paraná Brasil
| | - Tereza Cristina Rocha Moreira de Oliveira
- Department of Food Science and Technology; State University of Londrina; Rodovia Celso Garcia Cid, PR 445, Km 380, Campus Universitário, Caixa Postal 6001 CEP: 86051-990 Londrina Paraná Brasil
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Almeida C, Cerqueira L, Azevedo NF, Vieira MJ. Detection of Salmonella enterica serovar Enteritidis using real time PCR, immunocapture assay, PNA FISH and standard culture methods in different types of food samples. Int J Food Microbiol 2012; 161:16-22. [PMID: 23246608 DOI: 10.1016/j.ijfoodmicro.2012.11.014] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Revised: 10/30/2012] [Accepted: 11/17/2012] [Indexed: 10/27/2022]
Abstract
Several methods for the rapid and specific detection of Salmonella in food samples have been described. Here, we compare 4 of those methods in terms of assay time, procedure complexity, detection limit, sensitivity, specificity and accuracy. Milk, eggs and mayonnaise samples were artificially contaminated with Salmonella enterica serovar Enteritidis cell concentrations ranging from 1×10(-2) to 1×10(2) CFU per 25 g or ml of food. Samples were then pre-enriched and analyzed by either: i) real-time PCR, using the iQ-Check Salmonella kit; ii) immunocapture, using the RapidChek SELECT Salmonella; iii) a peptide nucleic acid fluorescence in situ hybridization (PNA FISH) method and iv) the traditional bacteriological method ISO 6579:2002. All methods were able to detect Salmonella in the different types of food matrixes and presented a similar detection level of 1CFU per 25 g or ml of food sample. The immunocapture and the PNA FISH methods proved to be very reliable, as their results were 100% in agreement with the ISO method. However, real-time PCR presented a significant number of false positives, which resulted in a specificity of 55.6% (CI 95%, 31.3-77.6) and an accuracy of 82.2% (CI 95%, 63.2-91.4) for this method. Sensitivity was 100% since no false negative results were observed. In conclusion, the implementation of these molecular techniques, mainly the immunocapture and PNA-FISH methods, provides a reliable and less time-consuming alternative for the detection of Salmonella spp. in food samples.
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Affiliation(s)
- C Almeida
- IBB, Institute for Biotechnology and Bioengineering, Centre of Biological Engineering, Universidade do Minho, Campus de Gualtar 4710-057, Braga, Portugal
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Goh S, Kuan C, Loo Y, Chang W, Lye Y, Soopna P, Tang J, Nakaguchi Y, Nishibuchi M, Afsah-Hejri L, Son R. Listeria monocytogenes in retailed raw chicken meat in Malaysia. Poult Sci 2012; 91:2686-90. [DOI: 10.3382/ps.2012-02349] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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