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Ndraha N, Lin HY, Tsai SK, Hsiao HI, Lin HJ. The Rapid Detection of Salmonella enterica, Listeria monocytogenes, and Staphylococcus aureus via Polymerase Chain Reaction Combined with Magnetic Beads and Capillary Electrophoresis. Foods 2023; 12:3895. [PMID: 37959014 PMCID: PMC10649415 DOI: 10.3390/foods12213895] [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: 09/29/2023] [Revised: 10/16/2023] [Accepted: 10/23/2023] [Indexed: 11/15/2023] Open
Abstract
Food safety concerns regarding foodborne pathogen contamination have gained global attention due to its significant implications. In this study, we developed a detection system utilizing a PCR array combined with an automated magnetic bead-based system and CE technology to enable the detection of three foodborne pathogens, namely Salmonella enterica, Listeria monocytogenes, and Staphylococcus aureus. The results showed that our developed method could detect these pathogens at concentrations as low as 7.3 × 101, 6.7 × 102, and 6.9 × 102 cfu/mL, respectively, in the broth samples. In chicken samples, the limit of detection for these pathogens was 3.1 × 104, 3.5 × 103, and 3.9 × 102 cfu/g, respectively. The detection of these pathogens was accomplished without the necessity for sample enrichment, and the entire protocols, from sample preparation to amplicon analysis, were completed in approximately 3.5 h. Regarding the impact of the extraction method on detection capability, our study observed that an automated DNA extraction system based on the magnetic bead method demonstrated a 10-fold improvement or, at the very least, yielded similar results compared to the column-based method. These findings demonstrated that our developed model is effective in detecting low levels of these pathogens in the samples analyzed in this study. The PCR-CE method developed in this study may help monitor food safety in the future. It may also be extended to identify other foodborne pathogens across a wide range of food samples.
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Affiliation(s)
- Nodali Ndraha
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202301, Taiwan; (N.N.); (H.-Y.L.)
| | - Hung-Yun Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202301, Taiwan; (N.N.); (H.-Y.L.)
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 202301, Taiwan
| | | | - Hsin-I Hsiao
- Department of Food Science, National Taiwan Ocean University, Keelung 202301, Taiwan;
| | - Han-Jia Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 202301, Taiwan; (N.N.); (H.-Y.L.)
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2
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Gonçalves WB, Teixeira WSR, Sampaio ANDCE, Martins OA, Cervantes EP, Mioni MDSR, Gruber J, Pereira JG. Combination of the electronic nose with microbiology as a tool for rapid detection of Salmonella. J Microbiol Methods 2023; 212:106805. [PMID: 37558057 DOI: 10.1016/j.mimet.2023.106805] [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: 05/24/2023] [Revised: 06/26/2023] [Accepted: 08/05/2023] [Indexed: 08/11/2023]
Abstract
Salmonella is one of the most important foodborne pathogens and its analysis in raw and processed products is mandatory in the food industry. Although microbiological analysis is the standard practice for Salmonella determination, these assays are commonly laborious and time-consuming, thus, alternative techniques based on easy operation, few manipulation steps, low cost, and reduced time are desirable. In this paper, we demonstrate the use of an e-nose based on ionogel composites (ionic liquid + gelatine + Fe3O4 particles) as a complementary tool for the conventional microbiological detection of Salmonella. We used the proposed methodology for differentiating Salmonella from Escherichia coli, Pseudomonas fluorescens, Pseudomonas aeruginosa, and Staphylococcus aureus in nonselective medium: pre-enrichment in brain heart infusion (BHI) (incubation at 35 °C, 24 h) and enrichment in tryptone soy agar (TSA) (incubation at 35 °C, 24 h), whereas Salmonella differentiation from E. coli and P. fluorescens was also evaluated in selective media, bismuth sulfite agar (BSA), xylose lysine deoxycholate agar (XLD), and brilliant green agar (BGA) (incubation at 35 °C, 24 h). The obtained data were compared by principal component analysis (PCA) and different machine learning algorithms: multilayer perceptron (MLP), linear discriminant analysis (LDA), instance-based (IBk), and Logistic Model Trees (LMT). For the nonselective media, under optimized conditions, taking merged data of BHI + TSA (total incubation time of 48 h), an accuracy of 85% was obtained with MLP, LDA, and LMT, while five separated clusters were presented in PCA, each cluster corresponding to a bacterium. In addition, for evaluation of the e-nose for discrimination of Salmonella using selective media, considering the combination of BSA + XLD and total incubation of 72 h, the PCA showed three separated and well-defined clusters corresponding to Salmonella, E. coli, and P. fluorescens, and an accuracy of 100% was obtained for all classifiers.
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Affiliation(s)
- Wellington Belarmino Gonçalves
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof Lineu Prestes, 748, 05508-000, São Paulo, SP, Brazil.
| | - Wanderson Sirley Reis Teixeira
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), 18618-681, Botucatu, SP, Brazil.
| | - Aryele Nunes da Cruz Encide Sampaio
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), 18618-681, Botucatu, SP, Brazil.
| | - Otávio Augusto Martins
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), 18618-681, Botucatu, SP, Brazil.
| | - Evelyn Perez Cervantes
- Instituto de Matemática e Estatística, Universidade de São Paulo, 05508-090, São Paulo, SP, Brazil.
| | - Mateus de Souza Ribeiro Mioni
- Departamento de Patologia, Reprodução e Saúde Única, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), 14884-900, Jaboticabal, SP, Brazil.
| | - Jonas Gruber
- Departamento de Química Fundamental, Instituto de Química, Universidade de São Paulo, Av. Prof Lineu Prestes, 748, 05508-000, São Paulo, SP, Brazil.
| | - Juliano Gonçalves Pereira
- Faculdade de Medicina Veterinária e Zootecnia, Universidade Estadual Paulista "Júlio de Mesquita Filho" (UNESP), 18618-681, Botucatu, SP, Brazil.
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3
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Kabiraz MP, Majumdar PR, Mahmud MC, Bhowmik S, Ali A. Conventional and advanced detection techniques of foodborne pathogens: A comprehensive review. Heliyon 2023; 9:e15482. [PMID: 37151686 PMCID: PMC10161726 DOI: 10.1016/j.heliyon.2023.e15482] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 03/13/2023] [Accepted: 04/11/2023] [Indexed: 05/09/2023] Open
Abstract
Foodborne pathogens are a major public health concern and have a significant economic impact globally. From harvesting to consumption stages, food is generally contaminated by viruses, parasites, and bacteria, which causes foodborne diseases such as hemorrhagic colitis, hemolytic uremic syndrome (HUS), typhoid, acute, gastroenteritis, diarrhea, and thrombotic thrombocytopenic purpura (TTP). Hence, early detection of foodborne pathogenic microbes is essential to ensure a safe food supply and to prevent foodborne diseases. The identification of foodborne pathogens is associated with conventional (e.g., culture-based, biochemical test-based, immunological-based, and nucleic acid-based methods) and advances (e.g., hybridization-based, array-based, spectroscopy-based, and biosensor-based process) techniques. For industrial food applications, detection methods could meet parameters such as accuracy level, efficiency, quickness, specificity, sensitivity, and non-labor intensive. This review provides an overview of conventional and advanced techniques used to detect foodborne pathogens over the years. Therefore, the scientific community, policymakers, and food and agriculture industries can choose an appropriate method for better results.
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Affiliation(s)
- Meera Probha Kabiraz
- Department of Biotechnology, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Priyanka Rani Majumdar
- School of Biotechnology and Biomolecular Sciences, UNSW Sydney, Kensington, NSW, 2052, Australia
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
| | - M.M. Chayan Mahmud
- CASS Food Research Centre, School of Exercise and Nutrition Sciences, Deakin University, 221 Burwood Highway, VIC, 3125, Australia
| | - Shuva Bhowmik
- Department of Fisheries and Marine Science, Noakhali Science and Technology University, Noakhali, 3814, Bangladesh
- Centre for Bioengineering and Nanomedicine, Faculty of Dentistry, Division of Health Sciences, University of Otago, Dunedin, 9054, New Zealand
- Department of Food Science, University of Otago, Dunedin, 9054, New Zealand
- Corresponding author. Centre for Bioengineering and Nanomedicine, Faculty of Dentistry, Division of Health Sciences, University of Otago, Dunedin, 9054, New Zealand.
| | - Azam Ali
- Centre for Bioengineering and Nanomedicine, Faculty of Dentistry, Division of Health Sciences, University of Otago, Dunedin, 9054, New Zealand
- Corresponding author.
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4
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Li N, Wang L, Wang F, Chen H, Tao S, Zhu Q, Liu L, Liang W, Ma F. Rapid Detection of Klebsiella pneumoniae Carrying Virulence Gene rmpA2 by Recombinase Polymerase Amplification Combined With Lateral Flow Strips. Front Cell Infect Microbiol 2022; 12:877649. [PMID: 35663473 PMCID: PMC9160666 DOI: 10.3389/fcimb.2022.877649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 04/22/2022] [Indexed: 11/16/2022] Open
Abstract
Highly virulent Klebsiella pneumoniae often causes invasive infections with high morbidity and mortality rates, posing an immense clinical challenge. Rapid and accurate detection of pathogenic bacteria is of great significance for treatment and preventive control. Conventional detection by polymerase chain reaction (PCR) is limited by a dependence on laboratory equipment and professional staff. Recombinase polymerase amplification (RPA) combined with a lateral flow strip (LFS) can rapidly amplify and visualize target genes in a short period of time. The aim of this study was to develop an RPA-LFS technique for detection of the K. pneumoniae virulence gene rmpA2. Primers were designed against conserved sequences specific to the virulence gene, and primer probe design was optimized by introducing base substitution to obtain a specific and sensitive primer-probe combination for clinical detection. We tested 65 actual samples collected from clinics to evaluate the performance of the newly established RPA-LFS system in comparison with conventional PCR methods and qPCR methods. The RPA-LFS assay was performed at for 25 min a constant temperature of 37°C, and results could be observed without instrumentation. The system could specifically identify highly virulent K. pneumoniae carrying the virulence gene rmpA2 with a minimum detection limit of 10−1 ng/μL and 10 copies/μL. For the 65 clinical samples tested, The RPA-LFS assay results were in complete agreement with the qPCR results and PCR results. The RPA-LFS assay provides a rapid, accurate, and simple method for identification of highly virulent K. pneumoniae carrying rmpA2.
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Affiliation(s)
- Na Li
- Department of Laboratory Medicine, The Second People’s Hospital of Lianyungang City, Affiliated to Bengbu Medical College, Lianyungang, China
- Department of Medical Laboratory, Bengbu Medical College, Bengbu, China
| | - Lei Wang
- Department of Laboratory Medicine, The Second People’s Hospital of Lianyungang City, Affiliated to Bengbu Medical College, Lianyungang, China
- School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, China
| | - Fang Wang
- Department of Laboratory Medicine, The Second People’s Hospital of Lianyungang City, Affiliated to Bengbu Medical College, Lianyungang, China
| | - Huimin Chen
- Department of Central Laboratory, Lianyungang Second People’s Hospital affiliated to Jiangsu University, Lianyungang, China
| | - Shuan Tao
- Department of Central Laboratory, Lianyungang Second People’s Hospital affiliated to Jiangsu University, Lianyungang, China
| | - Qing Zhu
- Lianyungang Second People’s Hospital affiliated to Xuzhou Medical University, Lianyungang, China
| | - Liping Liu
- Lianyungang Second People’s Hospital affiliated to Xuzhou Medical University, Lianyungang, China
| | - Wei Liang
- Department of Laboratory Medicine, The Second People’s Hospital of Lianyungang City, Affiliated to Bengbu Medical College, Lianyungang, China
- *Correspondence: Wei Liang, ; Fang Ma,
| | - Fang Ma
- Department of Medical Laboratory, Bengbu Medical College, Bengbu, China
- *Correspondence: Wei Liang, ; Fang Ma,
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5
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Shang Y, Ye Q, Wu Q, Xiang X, Zha F, Du M, Zhang J. Novel multiplex PCR assays for rapid identification of Salmonella serogroups B, C1, C2, D, E, S. enteritidis, and S. typhimurium. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:1445-1453. [PMID: 35332354 DOI: 10.1039/d1ay02163j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Foodborne illnesses caused by Salmonella represent a significant public health problem worldwide. The aim of this study was to establish multiplex PCR (mPCR) for the rapid identification of Salmonella serogroups B, C1, C2, D, and E as well as for the serovars enteritidis and typhimurium. Employing pan-genome analysis and PCR verification, B-rfbJ, C1-9679, C2-pimB, D-rfbJ, E-rfbC, and four genes (SE18636, SE16574, SE2599, and SE13329) were identified as specific target genes for Salmonella serogroups B, C1, C2, D, E, and S. enteritidis, respectively. Thereafter, three novel mPCR assays (one of 3-mPCR and two of 2-mPCR) were successfully developed to identify these bacteria based on the target genes and another S. typhimurium-specific STM4495 gene. The primers targeting C1-9679, C2-pimB, and E-rfbC genes specific to the serogroups C1, C2, and E, respectively, constituted a 3-mPCR, while the other two 2-mPCRs, respectively, consisting primers specific to serogroup D and S. enteritidis (D-rfbJ and SE16574), and serogroup B and S. typhimurium-specific primers (B-rfbJ and STM4495), were also designed. The specificity of each mPCR was further evaluated by using non-target strains. The detection limits of mPCRs were approximately 103-104 CFU mL-1 in pure culture and 104-105 CFU g-1 in spiked chicken meat. In addition, mPCR assays could correctly detect target Salmonella in food samples. These results suggest that specific targets could be mined efficiently through a pan-genome analysis tool, and the novel mPCR assays developed in this study offer a promising technique for rapid and accurate detection of five serogroups of Salmonella (B, C1, C2, D, and E) and two serovars (S. enteritidis and S. typhimurium).
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Affiliation(s)
- Yuting Shang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, PR China.
- Beijing Key Laboratory of Microanalytical Methods and Instrumentation, Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology, Ministry of Education, Department of Chemistry, Tsinghua University, Beijing, 100084, PR China
| | - Qinghua Ye
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, PR China.
| | - Qingping Wu
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, PR China.
| | - Xinran Xiang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, PR China.
| | - Fei Zha
- State Key Laboratory of Food Science and Technology, National Engineering Research Centre for Functional Foods, Synergetic Innovation Centre of Food Safety, Joint International Research Laboratory on Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, PR China
| | - Mingzhu Du
- State Key Laboratory of Food Science and Technology, National Engineering Research Centre for Functional Foods, Synergetic Innovation Centre of Food Safety, Joint International Research Laboratory on Food Safety, School of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, 214122, PR China
| | - Jumei Zhang
- Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, State Key Laboratory of Applied Microbiology Southern China, Institute of Microbiology, Guangdong Academy of Sciences, Guangzhou, 510070, PR China.
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6
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Electrochemical Biosensors for Foodborne Pathogens Detection Based on Carbon Nanomaterials: Recent Advances and Challenges. FOOD BIOPROCESS TECH 2022. [DOI: 10.1007/s11947-022-02759-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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7
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Brown EW, Bell R, Zhang G, Timme R, Zheng J, Hammack TS, Allard MW. Salmonella Genomics in Public Health and Food Safety. EcoSal Plus 2021; 9:eESP00082020. [PMID: 34125583 PMCID: PMC11163839 DOI: 10.1128/ecosalplus.esp-0008-2020] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Accepted: 03/16/2021] [Indexed: 12/26/2022]
Abstract
The species Salmonella enterica comprises over 2,600 serovars, many of which are known to be intracellular pathogens of mammals, birds, and reptiles. It is now apparent that Salmonella is a highly adapted environmental microbe and can readily persist in a number of environmental niches, including water, soil, and various plant (including produce) species. Much of what is known about the evolution and diversity of nontyphoidal Salmonella serovars (NTS) in the environment is the result of the rise of the genomics era in enteric microbiology. There are over 340,000 Salmonella genomes available in public databases. This extraordinary breadth of genomic diversity now available for the species, coupled with widespread availability and affordability of whole-genome sequencing (WGS) instrumentation, has transformed the way in which we detect, differentiate, and characterize Salmonella enterica strains in a timely way. Not only have WGS data afforded a detailed and global examination of the molecular epidemiological movement of Salmonella from diverse environmental reservoirs into human and animal hosts, but they have also allowed considerable consolidation of the diagnostic effort required to test for various phenotypes important to the characterization of Salmonella. For example, drug resistance, serovar, virulence determinants, and other genome-based attributes can all be discerned using a genome sequence. Finally, genomic analysis, in conjunction with functional and phenotypic approaches, is beginning to provide new insights into the precise adaptive changes that permit persistence of NTS in so many diverse and challenging environmental niches.
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Affiliation(s)
- Eric W. Brown
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland, USA
| | - Rebecca Bell
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland, USA
| | - Guodong Zhang
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland, USA
| | - Ruth Timme
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland, USA
| | - Jie Zheng
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland, USA
| | - Thomas S. Hammack
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland, USA
| | - Marc W. Allard
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, College Park, Maryland, USA
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Mokgophi TM, Gcebe N, Fasina F, Jambwa K, Adesiyun AA. Prevalence, Serovars, and Factors Associated with Salmonella Contamination of Chicken Carcasses Sold in Outlets of the Informal Market in Gauteng Province, South Africa. J Food Prot 2021; 84:991-999. [PMID: 33428739 DOI: 10.4315/jfp-20-416] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 01/05/2021] [Indexed: 02/05/2023]
Abstract
ABSTRACT Salmonella has been linked to many foodborne illnesses and epidemics in both humans and animals. This cross-sectional study determined the prevalence, serovars, and factors associated with Salmonella contamination of chickens slaughtered in informal market outlets in Gauteng Province, South Africa. A total of 151 chicken carcasses were randomly collected from 47 outlets. Standard bacteriological and molecular methods were used to isolate, identify, and determine the serovar of Salmonella isolates. The prevalence of Salmonella in carcass swabs, cloacal swabs, and carcass drips was 29.1% (44 of 151), 27.2% (41 of 151), and 43.7% (66 of 151), respectively, and the differences were statistically significant (P = 0.004). Only 5 (township locations of outlet, throughput, carcass evisceration, location of carcass for sale, and outlet sanitation) of 10 factors investigated for the contamination of carcasses by Salmonella were statistically significantly (P < 0.05) associated with the isolation of Salmonella. Of the 268 isolates of Salmonella, 157 (58.6%) were typeable using a limited molecular PCR technique, and nine serovars were identified. The predominant Salmonella enterica serovars were Bovismorbificans (31.0%), Enteritidis (7.5%), and Hadar (6.7%). The five important factors found to be significantly associated with the isolation of Salmonella at these outlets offer opportunities for the reduction of Salmonella contamination. There is a need for further investigation of the probable causes of the predominant isolation of Salmonella serovar Bovismorbificans in chickens and its potential implications for human infections in South Africa. It is concluded that chickens purchased from the informal market in Gauteng Province can be a source for salmonellosis in humans if improperly cooked before consumption.
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Affiliation(s)
- Thelma M Mokgophi
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
| | - Nomakorinte Gcebe
- Bacteriology Department, Onderstepoort Veterinary Research, Agricultural Research Council, South Africa
| | - Folorunso Fasina
- Department of Veterinary Tropical Diseases, Faculty of Veterinary Sciences, University of Pretoria, South Africa
- Emergency Center for Transboundary Animal Diseases, Food and Agriculture Organization, Dar es Salaam, Tanzania
| | - Kudakhwashe Jambwa
- Bacteriology Department, Onderstepoort Veterinary Research, Agricultural Research Council, South Africa
| | - Abiodun A Adesiyun
- Department of Production Animal Studies, Faculty of Veterinary Science, University of Pretoria, Onderstepoort, South Africa
- Department of Basic Veterinary Sciences, Sciences, School of Veterinary Medicine, The University of West Indies, St. Augustine, Trinidad and Tobago
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9
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Shang Y, Ye Q, Wu Q, Pang R, Xiang X, Wang C, Li F, Zhou B, Xue L, Zhang Y, Sun X, Zhang J. PCR identification of Salmonella serovars for the E serogroup based on novel specific targets obtained by pan-genome analysis. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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10
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Hong T, Qiu L, Rui W, Li Y, Zheng R, Guo Q, Zhou S, Cui P, Sheng J, Ni X, Wang J, Jiang P. Capillary electrophoretic method for Staphylococcus aureus detection by using a novel antimicrobial peptide. Electrophoresis 2021; 42:1217-1220. [PMID: 33675051 DOI: 10.1002/elps.202000323] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 02/18/2021] [Accepted: 02/21/2021] [Indexed: 01/23/2023]
Abstract
A novel peptide containing antimicrobial sequence and gelatinase cleavage sites was designed for Staphylococcus aureus detection. Since Staphylococcus aureus could secrete gelatinase, the fluorescein labeled peptide GKRWWKWWRRPLGVRGC could be recognized and cleaved. The obtained products were able to be analyzed by capillary electrophoresis with fluorescence detection. To explore the effect of Staphylococcus aureus concentration on enzyme digestion ability of peptide, Staphylococcus aureus with different concentrations were incubated with the peptide. Results indicated that capillary electrophoretic method was efficient for determining Staphylococcus aureus content. Compared with traditional approaches for Staphylococcus aureus detection, capillary electrophoresis possessed higher efficiency, enhanced sensitivity, and low sample consumption. Moreover, the proposed peptide also presented desirable antimicrobial activity. It suggested that the novel antimicrobial peptide used in this research opens a new path of detecting Staphylococcus aureus by capillary electrophoretic method.
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Affiliation(s)
- Tingting Hong
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China
| | - Lin Qiu
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China.,Jiangsu Science Standard Medical Testing Co. Ltd, Changzhou, Jiangsu, P. R. China
| | - Wen Rui
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China
| | - Ying Li
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China
| | - Ronghui Zheng
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China
| | - Qianqian Guo
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China
| | - Shuwen Zhou
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China
| | - Pengfei Cui
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China.,Jiangsu Traumark Medical Instrument Co. Ltd., Changzhou, Jiangsu, P. R. China
| | - Jingyu Sheng
- Wujin Hospital, Affiliated with Jiangsu University, Changzhou, Jiangsu, P. R. China
| | - Xinye Ni
- The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu, P. R. China
| | - Jianhao Wang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China.,Changzhou Le Sun Pharmaceuticals Co. Ltd., Changzhou, Jiangsu, P. R. China
| | - Pengju Jiang
- School of Pharmacy, Changzhou University, Changzhou, Jiangsu, P. R. China
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11
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Wang Y, Schill KM, Fry HC, Duncan TV. A Quantum Dot Nanobiosensor for Rapid Detection of Botulinum Neurotoxin Serotype E. ACS Sens 2020; 5:2118-2127. [PMID: 32527082 DOI: 10.1021/acssensors.0c00738] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Botulinum neurotoxins (BoNTs) are potent toxins produced by Clostridium bacteria that are responsible for the illness botulism and are listed as bioterrorism agents. BoNT serotype E (BoNT/E) is one of four BoNT serotypes that cause human botulism and is the second most frequent cause of foodborne botulism. Rapid detection and discrimination of BoNT serotypes implicated in human disease are critical for ensuring timely treatment of patients and identifying sources of toxins, but there have been few reported detection methods for BoNT/E and even fewer methods usable for BoNT serotyping. We report a nanobiosensor based on Förster resonance energy transfer (FRET) between semiconductor nanocrystals (quantum dots, QDs) and dark quencher-labeled peptide probes to detect biologically active BoNT/E in aqueous media. The peptide probes contain a specific cleavage site for active BoNT/E. QD photoluminescence, which changes intensity due to FRET when the peptide probe is cleaved, was used to indicate toxin presence and quantity. The detection of a BoNT/E light chain (LcE) and holotoxin was observed within 3 h. The limits of detection were 0.02 and 2 ng/mL for LcE and holotoxin, respectively. The nanobiosensor shows good specificity toward the target in tests with nontarget BoNT serotypes. The high sensitivity, simple operation, short detection time, and ability to be used in parallel with probes developed for other BoNT serotypes indicate that the nanobiosensor will be useful for rapid BoNT/E detection and serotype discrimination in food analysis.
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Affiliation(s)
- Yun Wang
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Bedford Park, Illinois 60501, United States
| | - Kristin M. Schill
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Bedford Park, Illinois 60501, United States
| | - H. Christopher Fry
- Center for Nanoscale Materials, Argonne National Laboratory, DuPage County, Illinois 60439, United States
| | - Timothy V. Duncan
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration, Bedford Park, Illinois 60501, United States
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12
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Wu H, Zhao P, Yang X, Li J, Zhang J, Zhang X, Zeng Z, Dong J, Gao S, Lu C. A Recombinase Polymerase Amplification and Lateral Flow Strip Combined Method That Detects Salmonella enterica Serotype Typhimurium With No Worry of Primer-Dependent Artifacts. Front Microbiol 2020; 11:1015. [PMID: 32655504 PMCID: PMC7324538 DOI: 10.3389/fmicb.2020.01015] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2019] [Accepted: 04/24/2020] [Indexed: 12/12/2022] Open
Abstract
On-site detection demands are quickly increasing to control foodborne pathogenic bacteria along with the long food supply chains. Combining the isothermal recombinase polymerase amplification (RPA) with lateral flow strips (LFSs) is a promising molecular detection approach for the short reaction time, low isothermal condition, and simple and "instrument-free" procedure. However, the method comes with a non-negligible intrinsic risk of the primer-dependent artifacts. In this study, with an important foodborne pathogenic bacterium Salmonella enterica serotype Typhimurium (S. Typhimurium) as the model, system measures including the careful selection of primers targeting unique virulence genes, use of a probe in the RPA reaction, introducing base substitutions with specific guidelines in the primer and probe sequences, and analyzing and screening the primer-probe complex formation were taken to eliminate the primer-dependent artifacts. The measures were strictly tested for the efficacy, and the standardized method was able to specifically detect S. typhimurium within 30 min at 42°C without any interference of probe-primer signals. The established RPA-LFS method shared high sensitivity with the detection limit of 1 CFU/μl of unpurified culture. Our study provided practical measures for the prevention of false positive signals from primer-dimers or primer-probe complexes when using the RPA-LFS method in pathogen detections, and also established a readily applicable method for S. Typhimurium detection.
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Affiliation(s)
- Huahua Wu
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, China
| | - Panpan Zhao
- Key Laboratory of Zoonosis Research by Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xiaohan Yang
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, China
| | - Juan Li
- Wuhan Institute for Food and Cosmetic Control, Wuhan, China
| | - Jingyu Zhang
- Department of Animal Science, College of Wildlife and Protected Area, Northeast Forestry University, Harbin, China
| | - Xun Zhang
- School of Pharmacy, Jiangsu Ocean University, Lianyungang, China
| | - Zihan Zeng
- School of Pharmacy, Jiangsu Ocean University, Lianyungang, China
| | - Jingquan Dong
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, China
| | - Song Gao
- School of Pharmacy, Jiangsu Ocean University, Lianyungang, China
| | - Chen Lu
- Jiangsu Key Laboratory of Marine Biological Resources and Environment, Jiangsu Key Laboratory of Marine Pharmaceutical Compound Screening, Co-Innovation Center of Jiangsu Marine Bio-industry Technology, Jiangsu Ocean University, Lianyungang, China
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13
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Souza MN, Lehmann FKM, De Carli S, Kipper D, Fonseca ASK, Ikuta N, Lunge VR. Molecular detection of Salmonella serovars Enteritidis, Heidelberg and Typhimurium directly from pre-enriched poultry samples. Br Poult Sci 2019; 60:388-394. [PMID: 31066296 DOI: 10.1080/00071668.2019.1614525] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
1. Salmonella is one of the most important pathogens in public health and it is usually associated with food-borne diseases. Salmonella serovars Enteritidis and Typhimurium are widespread in the world with outbreaks frequently associated with consumption of poultry products; furthermore, there is an increasing public health concern with the wide dissemination of the serovar Heidelberg in poultry flocks. 2. The aim of the experiment was to develop and to validate rapid methods to detect Salmonella serovars Enteritidis, Typhimurium, and Heidelberg by real-time PCRs and test isolates from pre-enriched poultry samples. 3. Three real-time PCRs were developed and used in combination to detect the serovars Enteritidis, Typhimurium and Heidelberg. These assays were validated by the analysis of 126 Salmonella isolates, eight other enteric bacterial species and 34 naturally contaminated poultry samples after pre-enrichment with buffered peptone water (BPW). 4. Real-time PCRs detected the isolates of the most important poultry serovars (Enteritidis, Typhimurium and Heidelberg) with 100% inclusivity and exclusivity in each assay. The PCR identified monophasic variants of the serovars Typhimurium and Heidelberg. All PCRs were validated in detecting these specific serovars directly from pre-enriched poultry samples. The whole analytical procedure was performed in less than 24 h in a veterinary diagnostic laboratory.
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Affiliation(s)
- M N Souza
- a Laboratório de Diagnóstico Molecular , Universidade Luterana do Brasil (ULBRA) , Canoas , Rio Grande do Sul , Brazil
| | - F K M Lehmann
- a Laboratório de Diagnóstico Molecular , Universidade Luterana do Brasil (ULBRA) , Canoas , Rio Grande do Sul , Brazil
| | - S De Carli
- a Laboratório de Diagnóstico Molecular , Universidade Luterana do Brasil (ULBRA) , Canoas , Rio Grande do Sul , Brazil
| | - D Kipper
- a Laboratório de Diagnóstico Molecular , Universidade Luterana do Brasil (ULBRA) , Canoas , Rio Grande do Sul , Brazil
| | - A S K Fonseca
- b Simbios Biotecnologia , Cachoeirinha , Rio Grande do Sul , Brazil
| | - N Ikuta
- a Laboratório de Diagnóstico Molecular , Universidade Luterana do Brasil (ULBRA) , Canoas , Rio Grande do Sul , Brazil.,b Simbios Biotecnologia , Cachoeirinha , Rio Grande do Sul , Brazil
| | - V R Lunge
- a Laboratório de Diagnóstico Molecular , Universidade Luterana do Brasil (ULBRA) , Canoas , Rio Grande do Sul , Brazil.,b Simbios Biotecnologia , Cachoeirinha , Rio Grande do Sul , Brazil
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14
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Culture-free, highly sensitive, quantitative detection of bacteria from minimally processed samples using fluorescence imaging by smartphone. Biosens Bioelectron 2018. [PMID: 29533818 DOI: 10.1016/j.bios.2018.03.006] [Citation(s) in RCA: 72] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A critical unmet need in the diagnosis of bacterial infections, which remain a major cause of human morbidity and mortality, is the detection of scarce bacterial pathogens in a variety of samples in a rapid and quantitative manner. Herein, we demonstrate smartphone-based detection of Staphylococcus aureus in a culture-free, rapid, quantitative manner from minimally processed liquid samples using aptamer-functionalized fluorescent magnetic nanoparticles. The tagged S. aureus cells were magnetically captured in a detection cassette, and then fluorescence was imaged using a smartphone camera with a light-emitting diode as the excitation source. Our results showed quantitative detection capability with a minimum detectable concentration as low as 10 cfu/ml by counting individual bacteria cells, efficiently capturing S. aureus cells directly from a peanut milk sample within 10 min. When the selectivity of detection was investigated using samples spiked with other pathogenic bacteria, no significant non-specific detection occurred. Furthermore, strains of S. aureus from various origins showed comparable results, ensuring that the approach can be widely adopted. Therefore, the quantitative fluorescence imaging platform on a smartphone could allow on-site detection of bacteria, providing great potential assistance during major infectious disease outbreaks in remote and resource-limited settings.
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Krishna VD, Wu K, Su D, Cheeran MCJ, Wang JP, Perez A. Nanotechnology: Review of concepts and potential application of sensing platforms in food safety. Food Microbiol 2018; 75:47-54. [PMID: 30056962 DOI: 10.1016/j.fm.2018.01.025] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 01/26/2018] [Accepted: 01/30/2018] [Indexed: 12/13/2022]
Abstract
In recent years a number of new nanotechnology based platforms have been developed for detection of wide variety of targets including infectious agents, protein biomarkers, nucleic acids, drugs, and cancer cells. Nanomaterials such as magnetic nanoparticles, quantum dots, carbon nanotubes, nanowires, and nanosensors like giant magnetoresistance (GMR) sensors are used to quantitatively detect biomolecules with, experimentally, relatively good accuracy. There has been a growing interest in the use of magnetic fields in biosensing applications. Because biological samples have no ferromagnetic property and therefore there is no interference with complex sample matrix, detection of infectious agents from minimally processed samples is possible. Here, we provide a brief overview of the recent emergence of nanotechnology-based techniques for the detection and monitoring of foodborne diseases. In addition, the potential applications and future perspectives of nanotechnology on food safety are discussed. Ultimately, the review is expected to stimulate and provide directions to the development and application of nanotechnology-based tests for the early detection, and eventual control of foodborne diseases.
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Affiliation(s)
- Venkatramana D Krishna
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA
| | - Kai Wu
- The Center for Micromagnetics and Information Technologies (MINT) & Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Diqing Su
- The Center for Micromagnetics and Information Technologies (MINT) & Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA; Department of Chemical Engineering and Material Science, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Maxim C J Cheeran
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA
| | - Jian-Ping Wang
- The Center for Micromagnetics and Information Technologies (MINT) & Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN, 55455, USA
| | - Andres Perez
- Department of Veterinary Population Medicine, College of Veterinary Medicine, University of Minnesota, St. Paul, MN, 55108, USA.
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16
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Ngoensawat U, Rijiravanich P, Surareungchai W, Somasundrum M. Electrochemical Immunoassay forSalmonellaTyphimurium Based on an Immuno-magnetic Redox Label. ELECTROANAL 2017. [DOI: 10.1002/elan.201700568] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Umphan Ngoensawat
- School of Bioresources and Technology; King Mongkut's University of Technology Thonburi, Bang Khun Thian; Bangkok 10150 Thailand
| | - Patsamon Rijiravanich
- Biochemical Engineering and Pilot Plant Research and Development Unit, National Center for Genetic Engineering and Biotechnology; National Science and Technology Development Agency at King Mongkut's University of Technology Thonburi, Bang Khun Thian; Bangkok 10150 Thailand
| | - Werasak Surareungchai
- School of Bioresources and Technology; King Mongkut's University of Technology Thonburi, Bang Khun Thian; Bangkok 10150 Thailand
- Nanoscience & Nanotechnology Graduate Program; King Mongkut's University of Technology Thonburi, Bang Khun Thian; Bangkok 10150 Thailand
| | - Mithran Somasundrum
- Biochemical Engineering and Pilot Plant Research and Development Unit, National Center for Genetic Engineering and Biotechnology; National Science and Technology Development Agency at King Mongkut's University of Technology Thonburi, Bang Khun Thian; Bangkok 10150 Thailand
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17
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Furukawa M, Goji N, Janzen TW, Thomas MC, Ogunremi D, Blais B, Misawa N, Amoako KK. Rapid detection and serovar identification of common Salmonella enterica serovars in Canada using a new pyrosequencing assay. Can J Microbiol 2017; 64:75-86. [PMID: 29088546 DOI: 10.1139/cjm-2017-0496] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Serotyping of Salmonella enterica subsp. enterica is a critical step for foodborne salmonellosis investigation. To identify Salmonella enterica subsp. enterica serovars, we have developed a new assay based on a triplex polymerase chain reaction (PCR) with pyrosequencing for amplicon confirmation and phylogenetic discrimination of strains. The top 54 most prevalent serovars of S. enterica in Canada were examined with a total of 23 single-nucleotide polymorphisms (SNPs) and (or) single-nucleotide variations (SNVs) located on 3 genes (fliD, sopE2, and spaO). Seven of the most common serovars, Newport, Typhi, Javiana, Infantis, Thompson, Heidelberg, and Enteritidis, were successfully distinguished from the other serovars based on their unique SNP-SNV combinations. The remaining serovars, including Typhimurium, ssp I:4,[5],12:i:-, and Saintpaul, were further divided into 47 subgroups that demonstrate the relatedness to phylogenetic classifications of each serovar. This pyrosequencing assay is not only cost-effective, rapid, and user-friendly, but also provides phylogenetic information by analyzing 23 selected SNPs. With the added layer of confidence in the PCR results and the accuracy and speed of pyrosequencing, this novel method would benefit the food industry and provides a tool for rapid outbreak investigation through quick detection and identification of common S. enterica serovars in Canada.
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Affiliation(s)
- Maika Furukawa
- a Canadian Food Inspection Agency (CFIA) National Centres for Animal Disease, Lethbridge Laboratory, P.O. Box 640, Township Road 9-1, Lethbridge, AB T1J 3Z4, Canada.,b Laboratory of Veterinary Public Health, Department of Veterinary Medical Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki, 889-2192, Japan
| | - Noriko Goji
- a Canadian Food Inspection Agency (CFIA) National Centres for Animal Disease, Lethbridge Laboratory, P.O. Box 640, Township Road 9-1, Lethbridge, AB T1J 3Z4, Canada
| | - Timothy W Janzen
- a Canadian Food Inspection Agency (CFIA) National Centres for Animal Disease, Lethbridge Laboratory, P.O. Box 640, Township Road 9-1, Lethbridge, AB T1J 3Z4, Canada
| | - Matthew C Thomas
- a Canadian Food Inspection Agency (CFIA) National Centres for Animal Disease, Lethbridge Laboratory, P.O. Box 640, Township Road 9-1, Lethbridge, AB T1J 3Z4, Canada
| | - Dele Ogunremi
- c Canadian Food Inspection Agency (CFIA) Ontario Laboratory Network, 3851 Fallowfield Road, Ottawa, ON K2H 8P9, Canada
| | - Burton Blais
- d Canadian Food Inspection Agency (CFIA) Ontario Laboratory Network, Building 22, 960 Carling Avenue, Ottawa, ON K1A 0C6, Canada
| | - Naoaki Misawa
- b Laboratory of Veterinary Public Health, Department of Veterinary Medical Science, Faculty of Agriculture, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki, 889-2192, Japan.,e Center for Animal Disease Control, University of Miyazaki, 1-1 Gakuenkibanadai-nishi, Miyazaki, 889-2192, Japan
| | - Kingsley K Amoako
- a Canadian Food Inspection Agency (CFIA) National Centres for Animal Disease, Lethbridge Laboratory, P.O. Box 640, Township Road 9-1, Lethbridge, AB T1J 3Z4, Canada
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18
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Andjelković U, Šrajer Gajdošik M, Gašo-Sokač D, Martinović T, Josić D. Foodomics and Food Safety: Where We Are. Food Technol Biotechnol 2017; 55:290-307. [PMID: 29089845 PMCID: PMC5654429 DOI: 10.17113/ftb.55.03.17.5044] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Accepted: 05/31/2017] [Indexed: 12/21/2022] Open
Abstract
The power of foodomics as a discipline that is now broadly used for quality assurance of food products and adulteration identification, as well as for determining the safety of food, is presented. Concerning sample preparation and application, maintenance of highly sophisticated instruments for both high-performance and high-throughput techniques, and analysis and data interpretation, special attention has to be paid to the development of skilled analysts. The obtained data shall be integrated under a strong bioinformatics environment. Modern mass spectrometry is an extremely powerful analytical tool since it can provide direct qualitative and quantitative information about a molecule of interest from only a minute amount of sample. Quality of this information is influenced by the sample preparation procedure, the type of mass spectrometer used and the analyst's skills. Technical advances are bringing new instruments of increased sensitivity, resolution and speed to the market. Other methods presented here give additional information and can be used as complementary tools to mass spectrometry or for validation of obtained results. Genomics and transcriptomics, as well as affinity-based methods, still have a broad use in food analysis. Serious drawbacks of some of them, especially the affinity-based methods, are the cross-reactivity between similar molecules and the influence of complex food matrices. However, these techniques can be used for pre-screening in order to reduce the large number of samples. Great progress has been made in the application of bioinformatics in foodomics. These developments enabled processing of large amounts of generated data for both identification and quantification, and for corresponding modeling.
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Affiliation(s)
- Uroš Andjelković
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, HR-51000 Rijeka, Croatia
- Department of Chemistry, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, RS-11000 Belgrade, Serbia
| | - Martina Šrajer Gajdošik
- Department of Chemistry, J. J. Strossmayer University of Osijek, Cara Hadrijana 8/A, HR-31000 Osijek, Croatia
| | - Dajana Gašo-Sokač
- Faculty of Food Technology, J. J. Strossmayer University of Osijek, Franje Kuhača 20, HR-31000 Osijek, Croatia
| | - Tamara Martinović
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, HR-51000 Rijeka, Croatia
| | - Djuro Josić
- Department of Biotechnology, University of Rijeka, Radmile Matejčić 2, HR-51000 Rijeka, Croatia
- Warren Alpert Medical School, Brown University, 222 Richmond St, Providence, RI 02903, USA
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19
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Abstract
Abstract
The aim of the study was to evaluate and adapt the PCR-based protocol that utilizes the developed serotype-specific primers to identify Salmonella enterica species and its serotypes that are most frequently isolated from poultry samples in Vojvodina. Using the slide agglutination test, 64 and 33 out of 107 Salmonella isolates were identified as S. Infantis and S. Enteritidis, respectively, while ten isolates were identified as eight different Salmonella serovars. Using the same isolates, presence of 993-bp (bcfC gene), 636-bp (steB gene) and 293-bp (sdf locus) amplicons in multiplex PCR unambiguously identified 31 isolates as S. Enteritidis. Two isolates identified as Enteritidis in slide agglutination test were not identified as such in PCR-based approach since they both were missing 293-bp long PCR product. Thirty-nine isolates produced a 727-bp amplicon in the specific simplex PCR, and thus were identified as S. Infantis. The greatest discrepancy in comparison to the results of conventional serotyping has been observed in the case of S. Infantis, since 25 more isolates were noted as S. Infantis by conventional serotyping. Seven isolates, with unexpected PCR profiles stayed unidentified by molecular typing, although they were serotyped as S. Typhimurium (1) and S. Infantis (6). S. Gallinarum serovar has to be additionally confirmed, since it shares the same PCR profile with S. Livingstone. Clearly, PCR-based identification has to be thoroughly checked, verified and adapted if it is to be applied as the routine identification protocol.
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20
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Furutani S, Kajiya M, Aramaki N, Kubo I. Rapid Detection of Salmonella enterica in Food Using a Compact Disc-Shaped Device. MICROMACHINES 2016; 7:mi7010010. [PMID: 30407383 PMCID: PMC6190184 DOI: 10.3390/mi7010010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/07/2016] [Accepted: 01/12/2016] [Indexed: 11/28/2022]
Abstract
Rapid detection of food-borne pathogens is essential to public health and the food industry. Although the conventional culture method is highly sensitive, it takes at least a few days to detect food-borne pathogens. Even though polymerase chain reaction (PCR) can detect food-borne pathogens in a few hours, it is more expensive and unsatisfactorily sensitive relative to the culture method. We have developed a method to rapidly detect Salmonella enterica by using a compact disc (CD)-shaped device that can reduce reagent consumption in conventional PCR. The detection method, which combines culture and PCR, is more rapid than the conventional culture method and is more sensitive and cheaper than PCR. In this study, we also examined a sample preparation method that involved collecting bacterial cells from food. The bacteria collected from chicken meat spiked with S. enterica were mixed with PCR reagents, and PCR was performed on the device. At a low concentration of S. enterica, the collected S. enterica was cultured before PCR for sensitive detection. After cultivation for 4 h, S. enterica at 1.7 × 104 colony-forming units (CFUs)·g−1 was detected within 8 h, which included the time needed for sample preparation and detection. Furthermore, the detection of 30 CFUs·g−1 of S. enterica was possible within 12 h including 8 h for cultivation.
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Affiliation(s)
- Shunsuke Furutani
- Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), 1-8-31 Midorigaoka, Ikeda, Osaka 563-8577, Japan.
| | - Mitsutoshi Kajiya
- Graduate School of Engineering, Soka University, 1-236 Tangi, Hachioji, Tokyo 192-8577, Japan.
| | - Narumi Aramaki
- Graduate School of Engineering, Soka University, 1-236 Tangi, Hachioji, Tokyo 192-8577, Japan.
| | - Izumi Kubo
- Graduate School of Engineering, Soka University, 1-236 Tangi, Hachioji, Tokyo 192-8577, Japan.
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21
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Wang Y, Salazar JK. Culture-Independent Rapid Detection Methods for Bacterial Pathogens and Toxins in Food Matrices. Compr Rev Food Sci Food Saf 2015; 15:183-205. [DOI: 10.1111/1541-4337.12175] [Citation(s) in RCA: 161] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Accepted: 09/14/2015] [Indexed: 11/29/2022]
Affiliation(s)
- Yun Wang
- Div. of Food Processing Science and Technology; U.S. Food and Drug Administration; Bedford Park IL U.S.A
| | - Joelle K. Salazar
- Div. of Food Processing Science and Technology; U.S. Food and Drug Administration; Bedford Park IL U.S.A
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