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Arsenault J, Côté G, Turgeon P, Tchamdja E, Parmley EJ, Daignault D, Bélanger M, Buczinski S, Fravalo P. Prevalence and Antimicrobial Resistance of Salmonella Dublin and Thermotolerant Campylobacter in Liver from Veal Calves in Québec, Canada. Foodborne Pathog Dis 2024; 21:19-26. [PMID: 37855926 DOI: 10.1089/fpd.2023.0074] [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] [Indexed: 10/20/2023] Open
Abstract
Salmonella Dublin and Campylobacter spp. are two foodborne pathogens of importance. A small number of studies reported that consumption of veal liver was associated with an increased risk of human illness from these two pathogens. To better characterize the risk of exposure from liver, a cross-sectional study was conducted to estimate the prevalence of white veal calf liver contamination with these two pathogens and to characterize the antimicrobial non-susceptibility patterns of isolates. Veal liver samples were collected at two slaughterhouses in Quebec, Canada, in 2016 and 2017. Samples were submitted for polymerase chain reaction (PCR) screening followed by culture of Salmonella and thermotolerant Campylobacter. Isolates were tested for antimicrobial susceptibility using broth microdilution. Salmonella Dublin was the only serotype cultured from 3.6% (95% confidence interval [CI]: 0.0-7.9) of 560 liver samples. Among them and for technical reasons, 498 were tested by PCR for Campylobacter. The prevalence of PCR-positive livers was estimated to be 65.8% (95% CI: 58.7-72.9) for Campylobacter jejuni and 7.0% (95% CI: 3.9-10.1%) for Campylobacter coli. Fourteen Salmonella Dublin isolates were submitted for antimicrobial resistance (AMR) testing; all were non-susceptible to at least eight antimicrobials from six different classes. Most (81.4%) of the 188 C. jejuni isolates submitted for AMR testing were non-susceptible to tetracycline, and 23.0% of isolates were non-susceptible to nalidixic acid and ciprofloxacin. Of the seven C. coli isolates, four were multidrug resistant. This study highlights the importance of veal liver as a potential source of exposure to multidrug-resistant Salmonella Dublin and thermotolerant Campylobacter spp.
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Affiliation(s)
- Julie Arsenault
- Epidemiology of Zoonoses and Public Health Research Unit, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
- Department of Pathology and Microbiology, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
| | - Geneviève Côté
- Direction générale des laboratoires et de la santé animale, Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec, Quebec City, Canada
| | - Patricia Turgeon
- Epidemiology of Zoonoses and Public Health Research Unit, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
- Department of Pathology and Microbiology, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
- National Microbiology Laboratory, Public Health Agency of Canada, Saint-Hyacinthe, Canada
| | - Eyaba Tchamdja
- Epidemiology of Zoonoses and Public Health Research Unit, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
- Department of Pathology and Microbiology, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
| | - E Jane Parmley
- Centre for Foodborne, Environmental and Zoonotic Infectious Diseases, Public Health Agency of Canada, Guelph, Canada
- Department of Population Medicine, University of Guelph, Guelph, Canada
| | - Danielle Daignault
- National Microbiology Laboratory, Public Health Agency of Canada, Saint-Hyacinthe, Canada
| | - Maxime Bélanger
- Laboratoire d'expertises et d'analyses alimentaires, Ministère de l'Agriculture, des Pêcheries et de l'Alimentation du Québec, Quebec City, Canada
| | - Sébastien Buczinski
- Department of Clinical Sciences, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
| | - Philippe Fravalo
- Epidemiology of Zoonoses and Public Health Research Unit, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
- Department of Pathology and Microbiology, Faculté de médecine vétérinaire, Université de Montréal, Saint-Hyacinthe, Canada
- Chaire Agroalimentaire, Conservatoire National des Arts et Métiers, Ploufragan, France
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Je HJ, Singh S, Kim DW, Hur HS, Kim AL, Seo EJ, Koo OK. Systematic Review and Meta-Analysis of Campylobacter Species Contamination in Poultry, Meat, and Processing Environments in South Korea. Microorganisms 2023; 11:2722. [PMID: 38004735 PMCID: PMC10673067 DOI: 10.3390/microorganisms11112722] [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: 10/18/2023] [Revised: 11/03/2023] [Accepted: 11/06/2023] [Indexed: 11/26/2023] Open
Abstract
Campylobacter spp. constitute a significant global threat as a leading cause of foodborne illnesses, with poultry meat as a prominent reservoir for these pathogens. South Korea is known for its diverse poultry consumption habits, and continuous outbreaks make it a matter of concern to perform a meta-analysis to identify the primary source of contamination. This systematic review and meta-analysis aimed to assess and compare the prevalence of Campylobacter in various poultry and meat types while also considering the importance of environmental factors in South Korea. The meta-analysis revealed that duck meat exhibited the highest prevalence of Campylobacter, with a pooled estimate of 70.46% (95% CI: 42.80% to 88.38%), followed by chicken meat at a pooled prevalence of 36.17% (95% CI: 26.44% to 47.91%). Additionally, our analysis highlighted the predominance of C. jejuni and C. coli in South Korea. These findings underscore the importance of implementing rigorous food safety measures and establishing robust surveillance programs in the poultry industry to mitigate the risk of Campylobacter-related foodborne illnesses associated with meat consumption in South Korea.
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Affiliation(s)
- Hyeon Ji Je
- Department of Food Science & Technology, Chungnam National University, Daejeon 34134, Republic of Korea (D.W.K.); (H.S.H.); (A.L.K.)
| | - Saloni Singh
- Department of Food Science & Technology, Chungnam National University, Daejeon 34134, Republic of Korea (D.W.K.); (H.S.H.); (A.L.K.)
| | - Dong Woo Kim
- Department of Food Science & Technology, Chungnam National University, Daejeon 34134, Republic of Korea (D.W.K.); (H.S.H.); (A.L.K.)
| | - Hyun Seok Hur
- Department of Food Science & Technology, Chungnam National University, Daejeon 34134, Republic of Korea (D.W.K.); (H.S.H.); (A.L.K.)
| | - Ah Leum Kim
- Department of Food Science & Technology, Chungnam National University, Daejeon 34134, Republic of Korea (D.W.K.); (H.S.H.); (A.L.K.)
| | - Eun Jin Seo
- Agro-Bioproduct Analysis Team, Korea Agriculture Technology Promotion Agency, Iksan 54667, Republic of Korea;
| | - Ok Kyung Koo
- Department of Food Science & Technology, Chungnam National University, Daejeon 34134, Republic of Korea (D.W.K.); (H.S.H.); (A.L.K.)
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Lopez-Cantillo M, Opazo-Capurro A, Lopez-Joven C, Vidal-Veuthey B, Collado L. Campylobacter jejuni and Other Emerging Campylobacteraceae in Retail Beef Liver - An Underestimated Potential Source? Lett Appl Microbiol 2022; 75:1505-1514. [PMID: 36000196 DOI: 10.1111/lam.13816] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 08/12/2022] [Accepted: 08/15/2022] [Indexed: 11/30/2022]
Abstract
Bovine by-products, such as liver, could be an underestimated source of Campylobacter jejuni. Therefore, our aims were to evaluate the occurrence of C. jejuni and other Campylobacteraceae in retail beef liver and characterize their antibiotic resistance (ciprofloxacin, tetracycline, erythromycin, and gentamicin) and potential genetic relationship by flagellin gene Restriction Fragment Length Polymorphism (flaA-RFLP) and Multilocus Sequence Typing (MLST) with clinical strains. Seventy-six out of 206 samples (36.9%) were positive for Campylobacter and related organisms. Arcobacter butzleri was the most frequently isolated species (21.8%), followed by C. jejuni (9.7%), C. fetus (7.8%) and C. coli (1%). The C. jejuni strains showed resistance to tetracycline (17.2%) or ciprofloxacin (6.9%), with only one strain resistant to both antibiotics. Meanwhile, 8.3% of ciprofloxacin resistance was observed in C. fetus. The other species showed no resistance. Most of the clonal complexes (CC) in which the C. jejuni genotypes were grouped (CC-21, 42, 48 and 52), coincided with genotypes of clinical strains previously reported in Chile. As such, this study provides evidence that beef liver could be an underestimated route for resistant C. jejuni to humans. Further studies should assess whether this food could play a role in the transmission of other emerging Campylobacteraceae such as those reported here.
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Affiliation(s)
- Mónica Lopez-Cantillo
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Andrés Opazo-Capurro
- Laboratorio de Investigación en Agentes Antibacterianos, Departamento de Microbiología, Facultad de Ciencias Biológicas, Universidad de Concepción, Concepción, Chile
| | - Carmen Lopez-Joven
- Instituto de Medicina Preventiva Veterinaria, Facultad de Ciencias Veterinarias, Universidad Austral de Chile, Valdivia, Chile
| | - Boris Vidal-Veuthey
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
| | - Luis Collado
- Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia, Chile
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Wang J, Wang W, Gao Y, Zhang Y, Wang Y. A cross-contamination risk assessment model with improved coefficient optimization for Campylobacter. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2020. [DOI: 10.1080/10942912.2020.1820517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Jianxin Wang
- School of Information, Beijing Forestry University, Beijing, China
| | - Wenqian Wang
- School of Information, Beijing Forestry University, Beijing, China
| | - Yanan Gao
- School of Information, Beijing Forestry University, Beijing, China
| | - Yue Zhang
- School of Information, Beijing Forestry University, Beijing, China
| | - Yeru Wang
- School of Information, Beijing Forestry University, Beijing, China
- Risk Assessment Division 1, China National Center for Food Safety Risk Assessment, Beijing, China
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Choi Y, Kang J, Lee Y, Seo Y, Lee H, Kim S, Lee J, Ha J, Oh H, Kim Y, Byun KH, Ha SD, Yoon Y. Quantitative microbial risk assessment for Clostridium perfringens foodborne illness following consumption of kimchi in South Korea. Food Sci Biotechnol 2020; 29:1131-1139. [PMID: 32670667 DOI: 10.1007/s10068-020-00754-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 02/11/2020] [Accepted: 03/19/2020] [Indexed: 11/25/2022] Open
Abstract
The purpose of this study was to conduct a risk assessment for Clostridium perfringens foodborne illness via kimchi consumption in South Korea. Prevalence of C. perfringens in kimchi, kimchi consumption amount and frequency, and distribution conditions (time and temperature) from manufacture to the home were determined. C. perfringens initial contamination level was estimated using Beta distribution [Beta (6, 79)]. Potential C. perfringens cell counts during distribution were predicted using the Weibull model (primary models, R 2 = 0.923-0.953) and a polynomial model [(δ = 1/(0.2385 + (- 0.0307 × Temp) + (0.0011 × Temp2)), R 2 = 0.719]. Average daily consumption data was assessed using Gamma distribution [1.0444, 91.767, RiskShift (0.16895), RiskTruncate (0, 1078)]. The mean risk of C. perfringens-associated foodborne illness following kimchi consumption was found to be 1.21 × 10-17. These results suggest that the risk of C. perfringens foodborne illness from kimchi consumption, under current conditions, can be considered to be very low in S. Korea.
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Affiliation(s)
- Yukyung Choi
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310 Korea
| | - Joohyun Kang
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310 Korea
| | - Yewon Lee
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310 Korea
| | - Yeongeun Seo
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310 Korea
| | - Heeyoung Lee
- Risk Analysis Research Center, Sookmyung Women's University, Seoul, 04310 Korea
| | - Sejeong Kim
- Risk Analysis Research Center, Sookmyung Women's University, Seoul, 04310 Korea
| | - Jeeyeon Lee
- Risk Analysis Research Center, Sookmyung Women's University, Seoul, 04310 Korea
| | - Jimyeong Ha
- Risk Analysis Research Center, Sookmyung Women's University, Seoul, 04310 Korea
| | - Hyemin Oh
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310 Korea
| | - Yujin Kim
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310 Korea
| | - Kye-Hwan Byun
- Department of Food Science and Technology, Chung-Ang University, Anseong, 17546 Korea
| | - Sang-Do Ha
- Department of Food Science and Technology, Chung-Ang University, Anseong, 17546 Korea
| | - Yohan Yoon
- Department of Food and Nutrition, Sookmyung Women's University, Seoul, 04310 Korea
- Risk Analysis Research Center, Sookmyung Women's University, Seoul, 04310 Korea
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Tesson V, Federighi M, Cummins E, de Oliveira Mota J, Guillou S, Boué G. A Systematic Review of Beef Meat Quantitative Microbial Risk Assessment Models. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:E688. [PMID: 31973083 PMCID: PMC7037662 DOI: 10.3390/ijerph17030688] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Revised: 01/13/2020] [Accepted: 01/15/2020] [Indexed: 11/16/2022]
Abstract
Each year in Europe, meat is associated with 2.3 million foodborne illnesses, with a high contribution from beef meat. Many of these illnesses are attributed to pathogenic bacterial contamination and inadequate operations leading to growth and/or insufficient inactivation occurring along the whole farm-to-fork chain. To ensure consumer health, decision-making processes in food safety rely on Quantitative Microbiological Risk Assessment (QMRA) with many applications in recent decades. The present study aims to conduct a critical analysis of beef QMRAs and to identify future challenges. A systematic approach, the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines, was used to collate beef QMRA models, identify steps of the farm-to-fork chain considered, and analyze inputs and outputs included as well as modelling methods. A total of 2343 articles were collected and 67 were selected. These studies focused mainly on western countries and considered Escherichia coli (EHEC) and Salmonella spp. pathogens. Future challenges were identified and included the need of whole-chain assessments, centralization of data collection processes, and improvement of model interoperability through harmonization. The present analysis can serve as a source of data and information to inform QMRA framework for beef meat and will help the scientific community and food safety authorities to identify specific monitoring and research needs.
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Affiliation(s)
| | | | - Enda Cummins
- Biosystems Engineering, School of Agriculture, Food Science and Veterinary Medicine, Agriculture and Food Science Centre, University College Dublin, Belfield, Dublin 4, Ireland
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Kwon MJ, Rhee MS, Yoon KS. A risk assessment study of Bacillus cereus in packaged tofu at a retail market in Korea. Food Sci Biotechnol 2019; 29:339-350. [PMID: 32257517 DOI: 10.1007/s10068-019-00670-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 07/18/2019] [Accepted: 08/13/2019] [Indexed: 12/29/2022] Open
Abstract
The objective of the study was to conduct a quantitative microbial risk assessment of Bacillus cereus for packaged tofu in Korea. Packaged tofu, including soft and firm tofu from six retail markets in Korea, were monitored to determine the initial contamination level of B. cereus. Predictive growth and survival models were developed to predict the change in B. cereus populations as a function of time and temperature (4-45 °C) from market to home. B. cereus was detected in 11 (12.9%) samples among 85 samples purchased at retail markets, and the average contamination level was 1.84 log CFU/g. Growth of B. cereus in tofu was observed at a temperature above 11 °C. The probability risk of B. cereus diarrheal illness due to packaged tofu consumption at the retail market is 1.0 × 10-4 per person per day. Key risk factors at the retail market and home are storage temperature and time of packaged tofu.
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Affiliation(s)
- Mi Jin Kwon
- 1Department of Food and Nutrition, College of Human Ecology, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
| | - Min Suk Rhee
- 2Department of Food Bioscience and Technology, Korea University, Seoul, 02841 Republic of Korea
| | - Ki Sun Yoon
- 1Department of Food and Nutrition, College of Human Ecology, Kyung Hee University, 26 Kyungheedae-ro, Dongdaemun-gu, Seoul, 02447 Republic of Korea
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Brouwer AF, Masters NB, Eisenberg JNS. Quantitative Microbial Risk Assessment and Infectious Disease Transmission Modeling of Waterborne Enteric Pathogens. Curr Environ Health Rep 2019; 5:293-304. [PMID: 29679300 DOI: 10.1007/s40572-018-0196-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
PURPOSE OF REVIEW Waterborne enteric pathogens remain a global health threat. Increasingly, quantitative microbial risk assessment (QMRA) and infectious disease transmission modeling (IDTM) are used to assess waterborne pathogen risks and evaluate mitigation. These modeling efforts, however, have largely been conducted independently for different purposes and in different settings. In this review, we examine the settings where each modeling strategy is employed. RECENT FINDINGS QMRA research has focused on food contamination and recreational water in high-income countries (HICs) and drinking water and wastewater in low- and middle-income countries (LMICs). IDTM research has focused on large outbreaks (predominately LMICs) and vaccine-preventable diseases (LMICs and HICs). Human ecology determines the niches that pathogens exploit, leading researchers to focus on different risk assessment research strategies in different settings. To enhance risk modeling, QMRA and IDTM approaches should be integrated to include dynamics of pathogens in the environment and pathogen transmission through populations.
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Affiliation(s)
- Andrew F Brouwer
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Nina B Masters
- Department of Epidemiology, University of Michigan, Ann Arbor, MI, 48109, USA
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Ha J, Lee H, Kim S, Lee J, Lee S, Choi Y, Oh H, Yoon Y. Quantitative microbial risk assessment of Campylobacter jejuni in jerky in Korea. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2018; 32:274-281. [PMID: 30056649 PMCID: PMC6325380 DOI: 10.5713/ajas.18.0322] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 07/26/2018] [Indexed: 11/27/2022]
Abstract
Objective The objective of this study was to estimate the risk of Campylobacter jejuni (C. jejuni) infection from various jerky products in Korea. Methods For the exposure assessment, the prevalence and predictive models of C. jejuni in the jerky and the temperature and time of the distribution and storage were investigated. In addition, the consumption amounts and frequencies of the products were also investigated. The data for C. jejuni for the prevalence, distribution temperature, distribution time, consumption amount, and consumption frequency were fitted with the @RISK fitting program to obtain appropriate probabilistic distributions. Subsequently, the dose-response models for Campylobacter were researched in the literature. Eventually, the distributions, predictive model, and dose-response model were used to make a simulation model with @RISK to estimate the risk of C. jejuni foodborne illness from the intake of jerky. Results Among 275 jerky samples, there were no C. jejuni positive samples, and thus, the initial contamination level was statistically predicted with the RiskUniform distribution [RiskUniform (−2, 0.48)]. To describe the changes in the C. jejuni cell counts during distribution and storage, the developed predictive models with the Weibull model (primary model) and polynomial model (secondary model) were utilized. The appropriate probabilistic distribution was the BetaGeneral distribution, and it showed that the average jerky consumption was 51.83 g/d with a frequency of 0.61%. The developed simulation model from this data series and the dose-response model (Beta Poisson model) showed that the risk of C. jejuni foodborne illness per day per person from jerky consumption was 1.56×10−12. Conclusion This result suggests that the risk of C. jejuni in jerky could be considered low in Korea.
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Affiliation(s)
- Jimyeong Ha
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.,Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Heeyoung Lee
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.,Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Sejeong Kim
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.,Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Jeeyeon Lee
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.,Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Soomin Lee
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.,Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Yukyung Choi
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.,Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Hyemin Oh
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.,Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
| | - Yohan Yoon
- Department of Food and Nutrition, Sookmyung Women's University, Seoul 04310, Korea.,Risk Analysis Research Center, Sookmyung Women's University, Seoul 04310, Korea
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Kim S, Jeong J, Lee H, Lee J, Lee S, Ha J, Choi Y, Yoon Y, Choi KH. Kinetic Behavior of Campylobacter jejuni in Beef Tartare at Cold Temperatures and Transcriptomes Related to Its Survival. J Food Prot 2017; 80:2127-2131. [PMID: 29166177 DOI: 10.4315/0362-028x.jfp-17-236] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
This study was conducted to examine the kinetic behavior of Campylobacter jejuni in raw beef tartare by using mathematical models and to identify genes related to C. jejuni survival at cold temperatures. C. jejuni was inoculated onto beef tartare samples, stored at 4, 10, 15, 25, and 30°C, plated on modified charcoal-cefoperazone-deoxycholate agar, and enumerated. The survival data was fitted to the Weibull model to calculate delta (δ), which is the time required for the first 1-log reduction of the cells. The Davey model was then fitted to the δ to evaluate the effect of temperature. To evaluate the performance of the developed model, the root mean square error (RMSE) was calculated by comparing the observed data with the predicted data. The mRNA was extracted from samples stored at 4 and 30°C under aerobic and anaerobic conditions, and the expression of oxidative stress response and stress response genes was evaluated. C. jejuni survived in beef tartare longer at 4°C (δ = 657.1 ± 79.6 min) than at other temperatures (9.7 ± 11.2 to 465.7 ± 139.3°C) even under aerobic conditions. The RMSE (0.475) suggested that the developed model was appropriate to describe the kinetic behavior of C. jejuni. Quantitative real-time PCR results revealed that oxidative stress and stress response genes were related to C. jejuni survival at cold temperatures, even under aerobic conditions. These results indicate that the model will be useful for describing the kinetic behavior of C. jejuni in beef tartare and that this pathogen can survive at cold temperatures because of the expression of the sodB, katA, and clpP genes.
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Affiliation(s)
- Sejeong Kim
- 1 Department of Food and Nutrition, Sookmyung Women's University, and Risk Analysis Research Center, Seoul 04310, Korea; and
| | - Jiyeon Jeong
- 1 Department of Food and Nutrition, Sookmyung Women's University, and Risk Analysis Research Center, Seoul 04310, Korea; and
| | - Heeyoung Lee
- 1 Department of Food and Nutrition, Sookmyung Women's University, and Risk Analysis Research Center, Seoul 04310, Korea; and
| | - Jeeyeon Lee
- 1 Department of Food and Nutrition, Sookmyung Women's University, and Risk Analysis Research Center, Seoul 04310, Korea; and
| | - Soomin Lee
- 1 Department of Food and Nutrition, Sookmyung Women's University, and Risk Analysis Research Center, Seoul 04310, Korea; and
| | - Jimyeong Ha
- 1 Department of Food and Nutrition, Sookmyung Women's University, and Risk Analysis Research Center, Seoul 04310, Korea; and
| | - Yukyoung Choi
- 1 Department of Food and Nutrition, Sookmyung Women's University, and Risk Analysis Research Center, Seoul 04310, Korea; and
| | - Yohan Yoon
- 1 Department of Food and Nutrition, Sookmyung Women's University, and Risk Analysis Research Center, Seoul 04310, Korea; and
| | - Kyoung-Hee Choi
- 2 Department of Oral Microbiology, College of Dentistry, Wonkwang University, Iksan, Jeonbuk 54538, Korea
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