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Lake FB, Chen J, van Overbeek LS, Baars JJP, Abee T, den Besten HMW. Biofilm formation and desiccation survival of Listeria monocytogenes with microbiota on mushroom processing surfaces and the effect of cleaning and disinfection. Int J Food Microbiol 2024; 411:110509. [PMID: 38101188 DOI: 10.1016/j.ijfoodmicro.2023.110509] [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: 05/09/2023] [Revised: 11/17/2023] [Accepted: 11/22/2023] [Indexed: 12/17/2023]
Abstract
Microbial multispecies communities consisting of background microbiota and Listeria monocytogenes could be established on materials used in food processing environments. The presence, abundance and diversity of the strains within these microbial multispecies communities may be affected by mutual interactions and differences in resistance towards regular cleaning and disinfection (C&D) procedures. Therefore, this study aimed to characterize the growth and diversity of a L. monocytogenes strain cocktail (n = 6) during biofilm formation on polyvinyl chloride (PVC) and stainless steel (SS) without and with the presence of a diverse set of background microbiota (n = 18). L. monocytogenes and background microbiota strains were isolated from mushroom processing environments and experiments were conducted in simulated mushroom processing environmental conditions using mushroom extract as growth medium and ambient temperature (20 °C) as culturing temperature. The L. monocytogenes strains applied during monospecies biofilm incubation formed biofilms on both PVC and SS coupons, and four cycles of C&D treatment were applied with a chlorinated alkaline cleaning agent and a disinfection agent based on peracetic acid and hydrogen peroxide. After each C&D treatment, the coupons were re-incubated for two days during an incubation period for 8 days in total, and C&D resulted in effective removal of biofilms from SS (reduction of 4.5 log CFU/cm2 or less, resulting in counts below detection limit of 1.5 log CFU/cm2 after every C&D treatment), while C&D treatments on biofilms formed on PVC resulted in limited reductions (reductions between 1.2 and 2.4 log CFU/cm2, which equals a reduction of 93.7 % and 99.6 %, respectively). Incubation of the L. monocytogenes strains with the microbiota during multispecies biofilm incubation led to the establishment of L. monocytogenes in the biofilm after 48 h incubation with corresponding high L. monocytogenes strain diversity in the multispecies biofilm on SS and PVC. C&D treatments removed L. monocytogenes from multispecies biofilm communities on SS (reduction of 3.5 log CFU/cm2 or less, resulting in counts below detection limit of 1.5 log CFU/cm2 after every C&D treatment), with varying dominance of microbiota species during different C&D cycles. However, C&D treatments of multispecies biofilm on PVC resulted in lower reductions of L. monocytogenes (between 0.2 and 2.4 log CFU/cm2) compared to single species biofilm, and subsequent regrowth of L. monocytogenes and stable dominance of Enterobacteriaceae and Pseudomonas. In addition, planktonic cultures of L. monocytogenes were deposited and desiccated on dry surfaces without and with the presence of planktonic background microbiota cultures. The observed decline of desiccated cell counts over time was faster on SS compared to PVC. However, the application of C&D resulted in counts below the detection limit of 1.7 log CFU/coupon on both surfaces (reduction of 5.9 log CFU/coupon or less). This study shows that L. monocytogenes is able to form single and multispecies biofilms on PVC with high strain diversity following C&D treatments. This highlights the need to apply more stringent C&D regime treatments for especially PVC and similar surfaces to efficiently remove biofilm cells from food processing surfaces.
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Affiliation(s)
- Frank B Lake
- Food Microbiology, Wageningen University and Research, Bornse Weilanden 9, 6708, WG, Wageningen, the Netherlands
| | - Jingjie Chen
- State Key Laboratory for Conservation and Utilization of Bio-Resources, School of Life Sciences, Center for Life Sciences, Yunnan University, Kunming 650091, China
| | - Leo S van Overbeek
- Biointeractions and Plant Health, Wageningen Plant Research, Wageningen University and Research, Droevendaalsesteeg 1, 6708, PB, Wageningen, the Netherlands
| | - Johan J P Baars
- Plant Breeding, Wageningen Plant Research, Wageningen University and Research, Droevendaalsesteeg 1, 6708, PB, Wageningen, the Netherlands
| | - Tjakko Abee
- Food Microbiology, Wageningen University and Research, Bornse Weilanden 9, 6708, WG, Wageningen, the Netherlands
| | - Heidy M W den Besten
- Food Microbiology, Wageningen University and Research, Bornse Weilanden 9, 6708, WG, Wageningen, the Netherlands.
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Ravindhiran R, Sivarajan K, Sekar JN, Murugesan R, Dhandapani K. Listeria monocytogenes an Emerging Pathogen: a Comprehensive Overview on Listeriosis, Virulence Determinants, Detection, and Anti-Listerial Interventions. MICROBIAL ECOLOGY 2023; 86:2231-2251. [PMID: 37479828 DOI: 10.1007/s00248-023-02269-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 07/12/2023] [Indexed: 07/23/2023]
Abstract
Listeria monocytogenes, the third most deleterious zoonotic pathogen, is a major causative agent of animal and human listeriosis, an infection related to the consumption of contaminated food products. Even though, this pathogen has been responsible for the outbreaks of foodborne infections in the early 1980s, the major outbreaks have been reported during the past two decades. Listeriosis infection in the host is a rare but life-threatening disease with major public health and economic implications. Extensive reports on listeriosis outbreaks are associated with milk and milk products, meat and meat products, and fresh produce. This bacterium can adapt to any environmental and stress conditions, making it a prime causative agent for major foodborne diseases. The pathogen could survive an antibiotic treatment and persist in the host cell, thereby escaping the standard diagnostic practices. The current review strives to provide concise information on the epidemiology, serotypes, and pathogenesis of the L. monocytogenes to decipher the knowledge on the endurance of the pathogen inside the host and food products as a vehicle for Listeria contaminations. In addition, various detection methods for Listeria species from food samples and frontline regimens of L. monocytogenes treatment have also been discussed.
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Affiliation(s)
- Ramya Ravindhiran
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu, 641043, India
| | - Karthiga Sivarajan
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu, 641043, India
| | - Jothi Nayaki Sekar
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu, 641043, India
| | - Rajeswari Murugesan
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu, 641043, India
| | - Kavitha Dhandapani
- Department of Biochemistry, Biotechnology and Bioinformatics, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore, Tamil Nadu, 641043, India.
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3
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Cross-contamination of mature Listeria monocytogenes biofilms from stainless steel surfaces to chicken broth before and after the application of chlorinated alkaline and enzymatic detergents. Food Microbiol 2023; 112:104236. [PMID: 36906320 DOI: 10.1016/j.fm.2023.104236] [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: 09/21/2022] [Revised: 02/07/2023] [Accepted: 02/07/2023] [Indexed: 02/10/2023]
Abstract
The objectives of this study were, firstly, to compare a conventional (i.e., chlorinated alkaline) versus an alternative (chlorinated alkaline plus enzymatic) treatment effectivity for the elimination of biofilms from different L. monocytogenes strains (CECT 5672, CECT 935, S2-bac and EDG-e). Secondly, to evaluate the cross-contamination to chicken broth from non-treated and treated biofilms formed on stainless steel surfaces. Results showed that all L. monocytogenes strains were able to adhere and develop biofilms at approximately the same growth levels (≈5.82 log CFU/cm2). When non-treated biofilms were put into contact with the model food, obtained an average transference rate of potential global cross-contamination of 20.4%. Biofilms treated with the chlorinated alkaline detergent obtained transference rates similar to non-treated biofilms as a high number of residual cells (i.e., around 4 to 5 Log CFU/cm2) were present on the surface, except for EDG-e strain on which transference rate diminished to 0.45%, which was related to the protective matrix. Contrarily, the alternative treatment was shown to not produce cross-contamination to the chicken broth due to its high effectivity for biofilm control (<0.50% of transference) except for CECT 935 strain that had a different behavior. Therefore, changing to more intense cleaning treatments in the processing environments can reduce risk of cross-contamination.
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4
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Colás-Medà P, Viñas I, Alegre I. Evaluation of Commercial Anti-Listerial Products for Improvement of Food Safety in Ready-to-Eat Meat and Dairy Products. Antibiotics (Basel) 2023; 12:antibiotics12020414. [PMID: 36830324 PMCID: PMC9952070 DOI: 10.3390/antibiotics12020414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/10/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023] Open
Abstract
In ready-to-eat products, such as cooked ham, fresh cheese, and fuet in which Listeria monocytogenes is a concern, the use of biopreservation techniques represents an additional hurdle to inhibit pathogen growth during storage. The objective of this study was to apply several biopreservation techniques in three different food matrices to reduce the growth of Listeria innocua, used as a surrogate of L. monocytogenes. Several lactic acid bacteria, the bacteriocin nisin, the bacteriophage PhageGuard ListexTM P100, and the enzyme lysozyme were evaluated. Cooked ham treated with the bacteriophage PhageGuard ListexTM at 0.5% or with the lactic acid bacteria SafePro® B-SF-43 (25 g/100 kg) reduced L. innocua population to below the detection limit after 7 days of storage (4 °C plus modified atmosphere packaging). In fresh cheese, the application of PhageGuard ListexTM at 0.2 and 0.5% reduced L. innocua counts by more than 3.4 logarithmic units after 6 days at 4 °C. In fuet, the 1.0% of PhageGuard ListexTM reduced L. innocua population by 0.7 ± 0.2 logarithmic units in front of control with no significant differences to other evaluated biopreservative agents. The present results confirm that the application of biopreservation techniques was able to inhibit L. innocua in fuet, cooked ham, and fresh cheese, and suggest that the type of food matrix and its physicochemical characteristics influence the biopreservative efficacy.
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Ramírez R, Trejo A, Delgado-Adámez J, Martín-Mateos MJ, García-Parra J. Effect of High-Hydrostatic-Pressure Processing and Storage Temperature on Sliced Iberian Dry-Cured Sausage (“Salchichón”) from Pigs Reared in Montanera System. Foods 2022; 11:foods11091338. [PMID: 35564061 PMCID: PMC9105523 DOI: 10.3390/foods11091338] [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: 04/11/2022] [Revised: 04/27/2022] [Accepted: 04/28/2022] [Indexed: 11/16/2022] Open
Abstract
The top-quality “salchichón” (a fermented dry-cured sausage) is manufactured from Iberian pigs reared outdoors. This work aims to evaluate the effect of hydrostatic high pressure (HHP) and storage temperature on sliced vacuum-packaged top-quality Iberian “salchichón”. Two types of “salchichón” (S1 and S2, manufactured at different companies) were processed at 600 MPa for 8 min and stored at 4 and 20 °C for 180 days. Microbiological, physicochemical, and sensory changes were evaluated. Microbiological counts were reduced by HHP treatment and also generally decreased during storage at both temperatures. Lightness and redness of slices decreased during storage at 20 °C, while yellowness values increased. Changes in color were also observed in sensory analysis of the dry-cured sausages. HHP increased lipid and protein oxidation values in S1, whereas protein oxidation increased at 20 °C in S2. S1 was more affected by HHP while S2 was more affected by the temperature of storage. Therefore, despite both products belonging to the same commercial category, slight differences in the composition of both products and/or differences in packaging determined a different behavior after HHP treatment and during storage at different temperatures.
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Effect of Enterocins A and B on the Viability and Virulence Gene Expression of Listeria monocytogenes in Sliced Dry-Cured Ham. Appl Microbiol 2021. [DOI: 10.3390/applmicrobiol2010001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Dry-cured ham can be contaminated with Listeria monocytogenes during its industrial processing. The use of bacteriocins could ensure the safety of such meat products, but their effect on pathogen physiology is unknown. Therefore, the impact of enterocins A and B on the L. monocytogenes population, and the expression patterns of five genes (inlA, inlB, clpC, fbpA and prfA) related to adhesion/invasion and virulence regulation have been monitored in sliced dry-cured ham during 30 d of storage in refrigeration (4 °C) and temperature-abuse conditions (20 °C). L. monocytogenes strains S2 (serotype 1/2a) and S7-2 (serotype 4b) counts were reduced by 0.5 and 0.6 log units immediately after the application of enterocins A and B, a decrease lower than previously reported. Differences in gene expression were found between the two strains. For strain S2, expression tended to increase for almost all genes up to day seven of storage, whereas this increase was observed immediately after application for strain S7-2; however, overall gene expression was repressed from day one onwards, mainly under temperature-abuse conditions. L. monocytogenes strains investigated in the present work exhibited a mild sensitivity to enterocins A and B in sliced dry-cured ham. Bacteriocins caused changes in the expression patterns of virulence genes associated with adhesion and invasion, although the potential virulence of surviving cells was not enhanced.
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7
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Shahzad M, Chaudhry M, Shahid MG, Ahsan A, Dar M, Mazhar B, Mustafa M, Saeed S, Munir S, Ali NM. Antibacterial activity of Ricinus communis plant extract against antibiotic resistant Helicobacter pylori and Gluconobacter oxydans isolated from fresh apple juices samples. BRAZ J BIOL 2021; 84:e253203. [PMID: 34932677 DOI: 10.1590/1519-6984.253203] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 07/27/2021] [Indexed: 11/21/2022] Open
Abstract
Bacteria were isolated from samples of Fresh Apple juices from shops of three different localities of Lahore. Analysis of samples from Liberty, Anarkali and Yateem khana Markets show different levels of contamination. There were pathogenic and non-pathogenic bacteria in all samples and were identified by the morphological and biochemical tests. Most of the plasmids of pathogenic bacteria were 4kb in their molecular size. Ribotyping of 16S ribosomal RNA gene sequencing was done to confirm Helicobacter pylori strain and Gluconobacter oxydans. The highest sensitivity of 210mm was shown by Enterobacter sp. against Aztheromysine disk (15µg) while Micrococcus sp. was highly resistant against all of the Antibiotics applied. The antibiotic resistance of pathogenic bacteria was also checked against Ricinus communis plant's extracts, all isolated bacterial pathogens were resistant but only, E.coli was inhibited at 300µl of the extracts. Presence of pathogenic bacteria in Apple juice samples was due to contamination of sewage water in drinking water while some of these pathogenic bacteria came from Apple's tree and other from store houses of fruits.
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Affiliation(s)
- M Shahzad
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - M Chaudhry
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - M G Shahid
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - A Ahsan
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - M Dar
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - B Mazhar
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - M Mustafa
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - S Saeed
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - S Munir
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
| | - N M Ali
- Government College University - GCU, Department of Zoology, Lahore, Pakistan
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8
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Gonzalez-Fandos E, Vazquez de Castro M, Martinez-Laorden A, Perez-Arnedo I. Behavior of Listeria monocytogenes and Other Microorganisms in Sliced Riojano Chorizo (Spanish Dry-Cured Sausage) during Storage under Modified Atmospheres. Microorganisms 2021; 9:1384. [PMID: 34202256 PMCID: PMC8306544 DOI: 10.3390/microorganisms9071384] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Revised: 06/23/2021] [Accepted: 06/24/2021] [Indexed: 01/22/2023] Open
Abstract
Sliced ready-to-eat meat products packaged under modified atmospheres are often marketed since they cover consumer demands. The slicing process could be a potential risk for consumers since contamination with Listeria monocytogenes could occur during this stage. The current study evaluated the behavior of L. monocytogenes and other microorganisms in commercial sliced Riojano chorizo. This meat product was sliced and inoculated with L. monocytogenes (3.5 log CFU/g) before packaging under different atmospheres (air, vacuum, 100% N2, 20% CO2/80% N2 and 40% CO2/60% N2) and stored at 4 °C for up to 60 days. Samples were taken on days 0, 7, 21, 28 and 60 of storage. L. monocytogenes, mesophiles, Enterobacteriaceae, lactic acid bacteria, Micrococcaceae, molds and yeast counts were evaluated. Additionally, water activity, humidity and pH were determined. L. monocytogenes counts decreased in inoculated sliced chorizo during storage. Packaging conditions and day of storage influenced microbial counts. After 60 days, a significant reduction (p ≤ 0.05) in the initial Listeria contamination levels (3.5. log CFU/g) between 1.1 and 1.46 logarithmic units was achieved in the sausages packaged in modified atmosphere. The highest reductions were observed in slices packaged in 40% CO2/60% N2 after 60 days of storage at 4 °C.
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Affiliation(s)
- Elena Gonzalez-Fandos
- CIVA Research Center, Food Technology Department, University of La Rioja, Madre de Dios 53, 26006 Logroño, La Rioja, Spain; (M.V.d.C.); (A.M.-L.); (I.P.-A.)
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9
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Meta-analysis of the prevalence of Listeria spp. and antibiotic resistant L. monocytogenes isolates from foods in Turkey. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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10
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Tantala J, Rachtanapun P, Rachtanapun C. Synergistic Antimicrobial Activities of Thai Household Essential Oils in Chitosan Film. Polymers (Basel) 2021; 13:polym13091519. [PMID: 34065089 PMCID: PMC8125964 DOI: 10.3390/polym13091519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 05/02/2021] [Accepted: 05/02/2021] [Indexed: 11/16/2022] Open
Abstract
Foodborne pathogens mostly contaminate ready-to-eat (RTE) meat products by post-process contamination and cause foodborne disease outbreaks. Preventing post-process contamination and controlling microbial growth during storage by packing the RTE meats with active antimicrobial film from chitosan combined with the synergism of Thai household essential oils was investigated. Here, we analyzed antimicrobial activity and mechanical properties of chitosan films incorporated with essential oil of fingerroot (EOF) and holy basil (EOH) based on their fractional inhibitory concentration and isobolograms. We showed that antimicrobial activities of chitosan film and chitosan films formulated with EOF:EOH displayed a dramatical reduction of Listeria monocytogenes Scott A concentration by 7 Log in 12 h. Chitosan film incorporated with EOF:EOH at ratio 0.04:0.04% v/v/w strongly retarded growth of total viable count of L. monocytogenes on vacuum-packed bologna slices during seven days of storage at 4 and 10 °C. Combined EOF and EOH added to chitosan films did not alter thickness, elongation (%) and colors (L*, a* and b*) of the chitosan film, but it increased water vapor transmission rate and decreased film tensile strength. Results suggested that chitosan film had strong antibacterial properties. Its effectiveness in inhibiting foodborne pathogenic bacteria in ready-to-eat meat products was enhanced by adding a combination of EOF:EOH.
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Affiliation(s)
- Juthamas Tantala
- Department of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand;
| | - Pornchai Rachtanapun
- Faculty of Agro-Industry, School of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand;
- The Cluster of Agro Bio-Circular-Green Industry (Agro BCG), Chiang Mai University, Chiang Mai 50100, Thailand
- Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Chitsiri Rachtanapun
- Department of Food Science and Technology, Faculty of Agro-Industry, Kasetsart University, Bangkok 10900, Thailand;
- Center for Advanced Studied Agriculture and Food, Kasetsart University, Bangkok 10900, Thailand
- Correspondence: ; Tel.: +66-2562-5000 (ext. 5206)
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Jang YS, Moon JS, Kang HJ, Bae D, Seo KH. Prevalence, Characterization, and Antimicrobial Susceptibility of Listeria monocytogenes from Raw Beef and Slaughterhouse Environments in Korea. Foodborne Pathog Dis 2021; 18:419-425. [PMID: 33900862 DOI: 10.1089/fpd.2020.2903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The prevalence of Listeria monocytogenes in raw beef and in slaughterhouse environments was investigated from April 2019 to February 2020. Three hundred raw beef samples were purchased from 50 retailers and 10 restaurants (5 samples per source). One hundred and thirty-four samples from slaughterhouse environments were collected by swabbing (10 × 10 cm) the surfaces, gloves, splitting saw, and drains. L. monocytogenes was detected and identified according to the method described in ISO 11290-1, and confirmed by 16S rRNA sequencing. L. monocytogenes was detected in raw beef (2/300, 0.7%), gloves used in carcass splitting (6/21, 28.6%), the splitting saw (1/18, 5.6%), and the drain zone (1/15, 6.7%). All isolates were serotype 1/2a or 1/2c, based on screening using multiplex PCR-based serogrouping assay and serotyping kit for O-H antigens. Pulsed-field gel electrophoresis (PFGE) following ApaI digestion of eight PFGE pulsotypes and four PFGE groups were identified. Biofilm formation analysis using Crystal Violet staining revealed the highest biofilm formation in strain LM-16, followed by D190613. Although L. monocytogenes isolates were susceptible to most antimicrobials, some resistance to penicillin (8/15, 53.3%) and tetracycline (2/15, 13.3%) was observed. Through PFGE, G190426, G190829, and G200210 isolated from the same location in this study were genetically homologous similar to the LM-16 strain, previously isolated from beef carcass in 2006. These results suggest that LM-16 has been continuously present in biofilms in the slaughterhouse environments since 2006. Our study indicates that L. monocytogenes contamination in raw beef could consistently occur during beef processing in slaughterhouse environments through contact with gloves, splitting saws, and drains.
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Affiliation(s)
- Yong-Seok Jang
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - Jin-San Moon
- Bacterial Disease Division, Animal and Plant Quarantine Agency, Gimcheon, South Korea
| | - Hye Jeong Kang
- Bacterial Disease Division, Animal and Plant Quarantine Agency, Gimcheon, South Korea
| | - Dongryeoul Bae
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
| | - Kun-Ho Seo
- Center for One Health, College of Veterinary Medicine, Konkuk University, Seoul, South Korea
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12
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Quantifying and modelling the inactivation of Listeria monocytogenes by electrolyzed water on food contact surfaces. J FOOD ENG 2021. [DOI: 10.1016/j.jfoodeng.2020.110287] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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13
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Bonilauri P, Merialdi G, Ramini M, Bardasi L, Taddei R, Grisenti MS, Daminelli P, Cosciani-Cunico E, Dalzini E, Frustoli MA, Giacometti F, Tomasello F, Piva S, Serraino A. Modeling the behavior of Listeria innocua in Italian salami during the production and high-pressure validation of processes for exportation to the U.S. Meat Sci 2020; 172:108315. [PMID: 32977291 DOI: 10.1016/j.meatsci.2020.108315] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 09/11/2020] [Accepted: 09/14/2020] [Indexed: 01/08/2023]
Abstract
A model describing Listeria innocua evolution according to process parameters of 51 Italian salami processes and HPP in 31 companies was developed. A total of 51 challenge tests were performed. During processing a L. innocua reduction of 0.34-4.32 Log10 CFU/g was observed and HPP further reduced the count of 0.48-3.47 Log10 CFU/g; an overall reduction of 1.04-5.68 is reached. PH after acidification/drying process, aw after seasoning, duration of the seasoning and caliber resulted associated (p < 0.05) with L. innocua decrease. HPP efficacy was associated (p < 0.05) with aw and pH of the product: higher the pH and aw after the acidification/drying and seasoning phases, higher resulted the L. innocua reduction after HPP. No significant association was observed between L.innocua and salt, nitrate and starter content and other characteristics of process. The model meets companies and Authorities needs and represents a useful tool to predict L. monocytogenes lethality, giving recommendations to food business operators interested in exportation to the U.S.
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Affiliation(s)
- Paolo Bonilauri
- Experimental Institute for Zooprophylaxis in Lombardy and Emilia Romagna, Via Pitagora 2, 42100 Reggio Emilia, Italy
| | - Giuseppe Merialdi
- Experimental Institute for Zooprophylaxis in Lombardy and Emilia Romagna, Via Fiorini 5, 40127 Bologna, Italy
| | - Mattia Ramini
- Experimental Institute for Zooprophylaxis in Lombardy and Emilia Romagna, Via Fiorini 5, 40127 Bologna, Italy
| | - Lia Bardasi
- Experimental Institute for Zooprophylaxis in Lombardy and Emilia Romagna, Via Fiorini 5, 40127 Bologna, Italy
| | - Roberta Taddei
- Experimental Institute for Zooprophylaxis in Lombardy and Emilia Romagna, Via Fiorini 5, 40127 Bologna, Italy
| | - Maria Silvia Grisenti
- SSICA Stazione Sperimentale per l'Industria delle Conserve Alimentari V, le Tanara 31/a, 43121 Parma, Italy
| | - Paolo Daminelli
- Experimental Institute for Zooprophylaxis in Lombardy and Emilia-Romagna, Via Bianchi 7/9, 25124 Brescia, Italy
| | - Elena Cosciani-Cunico
- Experimental Institute for Zooprophylaxis in Lombardy and Emilia-Romagna, Via Bianchi 7/9, 25124 Brescia, Italy
| | - Elena Dalzini
- National Reference Centre for Emerging Risks in Food Safety, Experimental Institute for Zooprophylaxis in Lombardy and Emilia-Romagna, Via Celoria 12, 20133 Milan, Italy
| | - Maria Angela Frustoli
- SSICA Stazione Sperimentale per l'Industria delle Conserve Alimentari V, le Tanara 31/a, 43121 Parma, Italy
| | - Federica Giacometti
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia (BO), Italy.
| | - Federico Tomasello
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia (BO), Italy
| | - Silvia Piva
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia (BO), Italy
| | - Andrea Serraino
- Department of Veterinary Medical Sciences, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia (BO), Italy
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14
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Application of Recombinase Polymerase Amplification with Lateral Flow for a Naked-Eye Detection of Listeria monocytogenes on Food Processing Surfaces. Foods 2020; 9:foods9091249. [PMID: 32906705 PMCID: PMC7555525 DOI: 10.3390/foods9091249] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 02/08/2023] Open
Abstract
The continuous contamination of foods with L. monocytogenes, highlights the need for additional controls in the food industry. The verification of food processing plants is key to avoid cross-contaminations, and to assure the safety of the food products. In this study, a new methodology for the detection of L. monocytogenes on food contact surfaces was developed and evaluated. It combines Recombinase Polymerase Amplification (RPA) with the lateral flow (LF) naked-eye detection. Different approaches for the recovery of the bacteria from the surface, the enrichment step and downstream analysis by RPA-LF were tested and optimized. The results were compared with a standard culture-based technique and qPCR analysis. Sampling procedure with sponges was more efficient for the recovery of the bacteria than a regular swab. A 24 h enrichment in ONE broth was needed for the most sensitive detection of the pathogen. By RPA-LF, it was possible to detect 1.1 pg/µL of pure L. monocytogenes DNA, and the complete methodology reached a LoD50 of 4.2 CFU/cm2 and LoD95 of 18.2 CFU/cm2. These results are comparable with the culture-based methodology and qPCR. The developed approach allows for a next-day detection without complex equipment and a naked-eye visualization of the results.
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15
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Iacumin L, Cappellari G, Colautti A, Comi G. Listeria monocytogenes Survey in Cubed Cooked Ham Packaged in Modified Atmosphere and Bioprotective Effect of Selected Lactic Acid Bacteria. Microorganisms 2020; 8:microorganisms8060898. [PMID: 32549230 PMCID: PMC7356115 DOI: 10.3390/microorganisms8060898] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 06/09/2020] [Accepted: 06/11/2020] [Indexed: 01/09/2023] Open
Abstract
The aim of this work was to study the presence of Listeria monocytogenes, as well as the potential activity of two bioprotective cultures (Lyocarni BOX-74 and Lyocarni BOX-57), versus a mix of three L. monocytogenes strains that were intentionally inoculated in cooked cubed ham, packaged in Modified Atmosphere Packaging and stored at different temperatures. The bioprotective cultures limit L. monocytogenes growth in cubed cooked ham stored either at 4 °C for 60 days and at 4 °C for 20 days and at 8 °C for 40 days. The inhibition at 8 °C is particularly useful for industrial cooked meat products, considering there are often thermal abuse conditions (8 °C) in the supermarkets. Both the starters can eliminate L. monocytogenes risk and maintain the products safe, despite the thermal abuse conditions. In addition, both culture starters grew without producing perceptible sensory variations in the samples, as demonstrated by the panel of the untrained tasters. The bioprotective LAB produced neither off-odours and off-flavours, nor white/viscous patinas, slime, discoloration or browning. Therefore, according to the obtained data, and despite the fact that cooked cubed ham did not show pH ≤ 4.4 or aw ≤ 0.92, or pH ≤ 5.0 and aw ≤ 0.94, as cited in the EC Regulation 2073/2005. It can be scientifically stated that cubes of cooked ham with the addition of bioprotective starters cultures do not constitute a favourable substrate for L. monocytogenes growth. Consequently, these products can easily fall into category 1.3 (ready-to-eat foods that are not favourable to L. monocytogenes growth, other than those for infants and for special medical purposes), in which a maximum concentration of L. monocytogenes of 100 CFU g−1 is allowed.
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16
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Cava R, García-Parra J, Ladero L. Effect of high hydrostatic pressure processing and storage temperature on food safety, microbial counts, colour and oxidative changes of a traditional dry-cured sausage. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.109462] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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17
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Di Ciccio P, Rubiola S, Grassi MA, Civera T, Abbate F, Chiesa F. Fate of Listeria monocytogenes in the Presence of Resident Cheese Microbiota on Common Packaging Materials. Front Microbiol 2020; 11:830. [PMID: 32499762 PMCID: PMC7243358 DOI: 10.3389/fmicb.2020.00830] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/07/2020] [Indexed: 01/03/2023] Open
Abstract
Literature data regarding the survival of microorganisms on materials used for food package purposes are scarce. The aim of the current study is to assess the survival of Listeria monocytogenes on different packaging materials for dairy products during extended storage at different temperatures. Three packaging materials (5 × 5 cm) were contaminated with a cocktail of five strains of Listeria monocytogenes suspended in a cheese homogenate, including the cheese's native microbial population. Contaminated samples were incubated at 37°, 12°, and 4°C and periodically analyzed up to 56 days. The evolution of the total viable count and pathogen population was evaluated. At 37°C, the results showed that Listeria monocytogenes was no longer detected on polyethylene-coated nylon (B) by day 4 and on polyethylene-coated parchment (A) and greaseproof paper (C) by day 7. Interestingly, the initial cell population (ranging between 2.5 and 2.7 log CFU/cm2) of Listeria monocytogenes increased to 3 log CFU/cm2 within 4 days of storage at 12°C on A and C. During storage, the number remained fairly constant at 12°C and 4°C on two materials (A-C) and decreased slowly on the third one (B). This study shows that survival of Listeria monocytogenes on packaging materials for dairy products will be higher when stored at 4 or 12°C compared to 37°C. The survival of Listeria monocytogenes on the packaging materials raises concerns of cross-contamination during food handling and preparation at catering and retail premises and within the home, highlighting the importance of treating the packaging materials as a potential source of cross-contamination. These initial findings may aid in quantifying risks associated with contamination of food packaging materials.
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Affiliation(s)
| | - Selene Rubiola
- Department of Veterinary Science, University of Turin, Turin, Italy
| | | | - Tiziana Civera
- Department of Veterinary Science, University of Turin, Turin, Italy
| | - Francesco Abbate
- Department of Veterinary Sciences, University of Messina, Polo Universitario della Annunziata, Messina, Italy
| | - Francesco Chiesa
- Department of Veterinary Science, University of Turin, Turin, Italy
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18
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Kang M, Kim SJ, Yoon SR, Lee HW, Lee JY, Ha JH. Determination of Transfer Patterns of Pectobacterium carotovorum subsp. carotovorum Planktonic Cells and Biofilms During Mechanical Cutting of Kimchi Cabbage. J Food Sci 2019; 84:2603-2609. [PMID: 31518463 DOI: 10.1111/1750-3841.14749] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 06/27/2019] [Accepted: 06/28/2019] [Indexed: 11/29/2022]
Abstract
Cross-contamination of Pectobacterium carotovorum subsp. carotovorum (PCC) from a stainless-steel surface to cabbage (Brassica rapa L. subsp. pekinensis) was evaluated. To investigate the PCC transfer pattern from mechanical knife surfaces to cabbage during 100 cuts, two mathematical models (power and logarithmic model) were fitted to the mean log10 detection data from cabbage. Overall, regression analysis determined that the best-fitting regression curves of planktonic cells and detached cells from biofilms transferred onto fresh cabbage were Y = 3.7X-0.41 , RMSE = 0.371 and Y = 4.6X-0.35 , RMSE = 0.254, respectively. For salted cabbage, the best-fit regression curves of planktonic cells and biofilm were Y = 5.8X-0.38 , RMSE = 0.209 and Y = 5.4X-0.23 , RMSE = 0.195, respectively. Our data provide a meaningful indication of the level of PCC cross-contamination.
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Affiliation(s)
- Miran Kang
- Hygienic Safety and Analysis Center, World Inst. of Kimchi, Gwangju, 61755, Korea
| | - Su-Ji Kim
- Hygienic Safety and Analysis Center, World Inst. of Kimchi, Gwangju, 61755, Korea
| | - So-Ra Yoon
- Hygienic Safety and Analysis Center, World Inst. of Kimchi, Gwangju, 61755, Korea
| | - Hae-Won Lee
- Hygienic Safety and Analysis Center, World Inst. of Kimchi, Gwangju, 61755, Korea
| | - Jae Yong Lee
- Hygienic Safety and Analysis Center, World Inst. of Kimchi, Gwangju, 61755, Korea
| | - Ji-Hyoung Ha
- Hygienic Safety and Analysis Center, World Inst. of Kimchi, Gwangju, 61755, Korea
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19
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Goburdhun D, Beeharry MD, Reega K, Ruggoo A, Neetoo H. Assessment of the microbiological quality of popular food items on sale in secondary school canteens of Mauritius. Ital J Food Saf 2019; 8:7326. [PMID: 31008082 PMCID: PMC6452090 DOI: 10.4081/ijfs.2019.7326] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2018] [Accepted: 05/07/2018] [Indexed: 11/23/2022] Open
Abstract
This study was carried out to assess the microbiological status of three hot meals served in eight selected school canteens of Mauritius, with two schools randomly selected from each of the four school zones of the island. Three individual samples of farata, panini, or fried noodles were collected at each school during two independent visits. The three individual samples of each food type collected during each visit were then pooled before being subjected to microbiological analyses. A total of 48 composite samples were analyzed. The parameters tested were Total Viable Count (TVC), Escherichia coli, Salmonella spp., Clostridium perfringens, Staphylococcus aureus, and Listeria spp. The microbiological analyses revealed that paninis were deemed as generally acceptable with TVC falling in the range of 3.0-5.7 Log CFU/g and undetectable levels of S. aureus and E. coli. In contrast, fried noodles and faratas harboured a moderately high level of TVC (4.4-6.7 Log CFU/g) and objectionably high levels S. aureus (3.1 to 5.0 Log CFU/g) and E. coli (3.1-5.1 Log CFU/g) for seven out of the eight schools.
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Affiliation(s)
| | | | | | - Arvind Ruggoo
- Department of Agricultural Production Systems, Faculty of Agriculture, University of Mauritius, Réduit, Mauritius
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20
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High hydrostatic pressure processing of sliced fermented sausages: A quantitative exposure assessment for Listeria monocytogenes. INNOV FOOD SCI EMERG 2019. [DOI: 10.1016/j.ifset.2019.01.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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21
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Application of X-ray for inactivation of foodborne pathogens in ready-to-eat sliced ham and mechanism of the bactericidal action. Food Control 2019. [DOI: 10.1016/j.foodcont.2018.09.034] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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22
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Lüth S, Boone I, Kleta S, Al Dahouk S. Analysis of RASFF notifications on food products contaminated with Listeria monocytogenes reveals options for improvement in the rapid alert system for food and feed. Food Control 2019. [DOI: 10.1016/j.foodcont.2018.09.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Combined Effect of High Pressure Processing with Enterocins or Thymol on the Inactivation of Listeria monocytogenes and the Characteristics of Sliced Dry-cured Ham. FOOD BIOPROCESS TECH 2018. [DOI: 10.1007/s11947-018-2212-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Jones SL, Ricke SC, Keith Roper D, Gibson KE. Swabbing the surface: critical factors in environmental monitoring and a path towards standardization and improvement. Crit Rev Food Sci Nutr 2018; 60:225-243. [DOI: 10.1080/10408398.2018.1521369] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Sarah L. Jones
- Department of Food Science, Center for Food Safety, Division of Agriculture, University of Arkansas, Fayetteville, Arkansas, USA
| | - Steven C. Ricke
- Department of Food Science, Center for Food Safety, Division of Agriculture, University of Arkansas, Fayetteville, Arkansas, USA
| | - D. Keith Roper
- Department of Chemical Engineering, College of Engineering, University of Arkansas, Fayetteville, Arkansas, USA
| | - Kristen E. Gibson
- Department of Food Science, Center for Food Safety, Division of Agriculture, University of Arkansas, Fayetteville, Arkansas, USA
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25
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Zaman S, Ahmed S, Kabir M, Bari M. Microbiological risk assessment and simple cost-effective ways to reduce the risk in bulk food bags manufacturing company. J Food Saf 2018. [DOI: 10.1111/jfs.12497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Sharmin Zaman
- Center for Advanced Research in Sciences, University of Dhaka; Dhaka Bangladesh
| | - Sunzid Ahmed
- Center for Advanced Research in Sciences, University of Dhaka; Dhaka Bangladesh
| | - Md.Raihan Kabir
- Quality Control & Assurance Division; Dutch-Bangla Pack Limited, Boro Baluakandi; Gazaria Munshiganj Bangladesh
| | - Md.Latiful Bari
- Center for Advanced Research in Sciences, University of Dhaka; Dhaka Bangladesh
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26
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LIPCSEI LAURENE, BROWN LAURAG, HOOVER ERICKAMER, FAW BRENDAV, HEDEEN NICOLE, MATIS BAILEY, NICHOLAS DAVID, RIPLEY DANNY. Retail Deli Slicer Inspection Practices: An EHS-Net Study. J Food Prot 2018; 81:799-805. [PMID: 29637808 PMCID: PMC6283281 DOI: 10.4315/0362-028x.jfp-17-407] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The Centers for Disease Control and Prevention (CDC) estimates that 3,000 people die in the United States each year from foodborne illness, and Listeria monocytogenes causes the third highest number of deaths. Risk assessment data indicate that L. monocytogenes contamination of particularly delicatessen meats sliced at retail is a significant contributor to human listeriosis. Mechanical deli slicers are a major source of L. monocytogenes cross-contamination and growth. In an attempt to prevent pathogen cross-contamination and growth, the U.S. Food and Drug Administration (FDA) created guidance to promote good slicer cleaning and inspection practices. The CDC's Environmental Health Specialists Network conducted a study to learn more about retail deli practices concerning these prevention strategies. The present article includes data from this study on the frequency with which retail delis met the FDA recommendation that slicers should be inspected each time they are properly cleaned (defined as disassembling, cleaning, and sanitizing the slicer every 4 h). Data from food worker interviews in 197 randomly selected delis indicate that only 26.9% of workers ( n = 53) cleaned and inspected their slicers at this frequency. Chain delis and delis that serve more than 300 customers on their busiest day were more likely to have properly cleaned and inspected slicers. Data also were collected on the frequency with which delis met the FDA Food Code provision that slicers should be undamaged. Data from observations of 685 slicers in 298 delis indicate that only 37.9% of delis ( n = 113) had slicers that were undamaged. Chain delis and delis that provide worker training were more likely to have slicers with no damage. To improve slicer practices, food safety programs and the retail food industry may wish to focus on worker training and to focus interventions on independent and smaller delis, given that these delis were less likely to properly inspect their slicers and to have undamaged slicers.
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Affiliation(s)
- LAUREN E. LIPCSEI
- Centers for Disease Control and Prevention, National Center for Environmental Health, 4770 Buford Highway, Mailstop F58, Atlanta, Georgia 30341
| | - LAURA G. BROWN
- Centers for Disease Control and Prevention, National Center for Environmental Health, 4770 Buford Highway, Mailstop F58, Atlanta, Georgia 30341
| | - E. RICKAMER HOOVER
- Centers for Disease Control and Prevention, National Center for Environmental Health, 4770 Buford Highway, Mailstop F58, Atlanta, Georgia 30341
| | - BRENDA V. FAW
- California Department of Public Health, Sacramento, California 95899
| | - NICOLE HEDEEN
- Minnesota Department of Health, St. Paul, Minnesota 55155
| | - BAILEY MATIS
- New York City Department of Health and Mental Hygiene, New York, New York 11101
| | - DAVID NICHOLAS
- New York State Department of Health, Albany, New York 12237
| | - DANNY RIPLEY
- Metro Nashville/Davidson County Public Health Department, Nashville, Tennessee 37209, USA
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27
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Xiao X, Pang H, Wang W, Fang W, Fu Y, Li Y. Modeling Transfer of Vibrio Parahaemolyticus During Peeling of Raw Shrimp. J Food Sci 2018; 83:756-762. [PMID: 29411873 DOI: 10.1111/1750-3841.14064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 01/07/2018] [Accepted: 01/07/2018] [Indexed: 10/18/2022]
Abstract
This study aimed to qualify the transfer of Vibrio parahaemolyticus during the shrimp peeling process via gloves under 3 different scenarios. The 1st 2 scenarios provided quantitative information for the probability distribution of bacterial transfer rates from (i) contaminated shrimp (6 log CFU/g) to non-contaminated gloves (Scenario 1) and (ii) contaminated gloves (6 log CFU/per pair) to non-contaminated shrimp (Scenario 2). In Scenario 3, bacterial transfer from contaminated shrimp to non-contaminated shrimp in the shrimp peeling process via gloves was investigated to develop a predictive model for describing the successive bacterial transfer. The range of bacterial transfer rate (%) in Scenarios 1 and 2 was 7% to 91.95% and 0.04% to 12.87%, respectively, indicating that the bacteria can be transferred from shrimp to gloves much easier than that from gloves to shrimp. A Logistic (1.59, 0.14) and Triangle distribution (-1.61, 0.12, 1.32) could be used to describe the bacterial transfer rate in Scenarios 1 and 2, respectively. In Scenario 3, a continuously decay patterning with fluctuations as the peeling progressed has been observed at all inoculation levels of the 1st shrimp (5, 6, and 7 log CFU/g). The bacteria could be transferred easier at 1st few peels, and the decreasing bacterial transfer was found in later phase. Two models (exponential and Weibull) could describe the successive bacterial transfer satisfactorily (pseudo-R2 > 0.84, RMSE < 1.23, SEP < 10.37). The result of this study can provide information regarding cross-contamination events in the seafood factory. PRACTICAL APPLICATION This study presented that Vibrio parahaemolyticus cross-contamination could be caused by gloves during the shrimp peeling process. The bacterial transfer rate distribution and predictive model derived from this work could be used in risk assessment of V. parahaemolyticus to ensure peeled shrimp safety.
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Affiliation(s)
- Xingning Xiao
- College of Biosystems Engineering and Food Science, Zhejiang Univ., Hangzhou 310058, China
| | - Haiying Pang
- College of Biosystems Engineering and Food Science, Zhejiang Univ., Hangzhou 310058, China
| | - Wen Wang
- Inst. of Quality and Standard of Agricultural Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
| | - Weihuan Fang
- College of Animal Sciences, Zhejiang Univ., Hangzhou 310058, China
| | - Yingchun Fu
- College of Biosystems Engineering and Food Science, Zhejiang Univ., Hangzhou 310058, China
| | - Yanbin Li
- College of Biosystems Engineering and Food Science, Zhejiang Univ., Hangzhou 310058, China.,Dept. of Biological & Agricultural Engineering, Univ. of Arkansas, Fayetteville, Arkansas 72701, USA
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28
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Lekjing S, Karrila S, Siripongvutikorn S. Thermal Inactivation of Listeria monocytogenes in Whole Oysters (Crassostrea belcheri) and Pasteurization Effects on Meat Quality. JOURNAL OF AQUATIC FOOD PRODUCT TECHNOLOGY 2017. [DOI: 10.1080/10498850.2017.1376237] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Somwang Lekjing
- Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani, Thailand
| | - Seppo Karrila
- Faculty of Science and Industrial Technology, Prince of Songkla University, Surat Thani, Thailand
| | - Sunisa Siripongvutikorn
- Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, Songkhla, Thailand
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29
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Effect of inoculum size, bacterial species, type of surfaces and contact time to the transfer of foodborne pathogens from inoculated to non-inoculated beef fillets via food processing surfaces. Food Microbiol 2017; 62:51-57. [DOI: 10.1016/j.fm.2016.09.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Revised: 08/25/2016] [Accepted: 09/23/2016] [Indexed: 11/20/2022]
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30
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Zhu Q, Gooneratne R, Hussain MA. Listeria monocytogenes in Fresh Produce: Outbreaks, Prevalence and Contamination Levels. Foods 2017; 6:foods6030021. [PMID: 28282938 PMCID: PMC5368540 DOI: 10.3390/foods6030021] [Citation(s) in RCA: 161] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 11/16/2022] Open
Abstract
Listeria monocytogenes, a member of the genus Listeria, is widely distributed in agricultural environments, such as soil, manure and water. This organism is a recognized foodborne pathogenic bacterium that causes many diseases, from mild gastroenteritis to severe blood and/or central nervous system infections, as well as abortion in pregnant women. Generally, processed ready-to-eat and cold-stored meat and dairy products are considered high-risk foods for L. monocytogenes infections that cause human illness (listeriosis). However, recently, several listeriosis outbreaks have been linked to fresh produce contamination around the world. Additionally, many studies have detected L. monocytogenes in fresh produce samples and even in some minimally processed vegetables. Thus L. monocytogenes may contaminate fresh produce if present in the growing environment (soil and water). Prevention of biofilm formation is an important control measure to reduce the prevalence and survival of L. monocytogenes in growing environments and on fresh produce. This article specifically focuses on fresh produce–associated listeriosis outbreaks, prevalence in growing environments, contamination levels of fresh produce, and associated fresh produce safety challenges.
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Affiliation(s)
- Qi Zhu
- Department of Wine, Food and Molecular Biosciences, Lincoln University, Lincoln 7647, Canterbury, New Zealand.
| | - Ravi Gooneratne
- Department of Wine, Food and Molecular Biosciences, Lincoln University, Lincoln 7647, Canterbury, New Zealand.
| | - Malik Altaf Hussain
- Department of Wine, Food and Molecular Biosciences, Lincoln University, Lincoln 7647, Canterbury, New Zealand.
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31
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Lee J, Gwak E, Lee H, Ha J, Lee S, Kim S, Oh MH, Park BY, Choi KH, Yoon Y. Effects of low NaNO 2 and NaCl concentrations on Listeria monocytogenes growth in emulsion-type sausage. ASIAN-AUSTRALASIAN JOURNAL OF ANIMAL SCIENCES 2017; 30:432-438. [PMID: 27739291 PMCID: PMC5337924 DOI: 10.5713/ajas.16.0391] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Revised: 08/18/2016] [Accepted: 10/03/2016] [Indexed: 12/12/2022]
Abstract
OBJECTIVE The objective of this study was to evaluate the effect of combinations of NaNO2 and NaCl concentrations on Listeria monocytogenes (L. monocytogenes) growth in emulsion-type sausage. METHODS Emulsion-type sausages formulated with different combinations of NaNO2 (0 and 10 ppm) and NaCl (1.00%, 1.25%, and 1.50%) were inoculated with a five-strain L. monocytogenes mixture, and stored at 4°C, 10°C, and 15°C, under aerobic or vacuum conditions. L. monocytogenes cell counts were measured at appropriate intervals, and kinetic parameters such as growth rate and lag phase duration (LPD) were calculated using the modified Gompertz model. RESULTS Growth rates increased (0.004 to 0.079 Log colony-forming unit [CFU]/g/h) as storage temperature increased, but LPD decreased (445.11 to 8.35 h) as storage temperature and NaCl concentration increased. The effect of combinations of NaCl and low-NaNO2 on L. monocytogenes growth was not observed at 4°C and 10°C, but it was observed at 15°C, regardless of atmospheric conditions. CONCLUSION These results indicate that low concentrations of NaNO2 and NaCl in emulsion-type sausage may not be sufficient to prevent L. monocytogenes growth, regardless of whether they are vacuum-packaged and stored at low temperatures. Therefore, additional techniques are necessary for L. monocytogenes control in the product.
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Affiliation(s)
- Jeeyeon Lee
- Department of Food and Nutrition, Sookmyung Women’s University, Seoul 04310, Korea
| | - Eunji Gwak
- Department of Food and Nutrition, Sookmyung Women’s University, Seoul 04310, Korea
| | - Heeyoung Lee
- Department of Food and Nutrition, Sookmyung Women’s University, Seoul 04310, Korea
| | - Jimyeong Ha
- Department of Food and Nutrition, Sookmyung Women’s University, Seoul 04310, Korea
| | - Soomin Lee
- Department of Food and Nutrition, Sookmyung Women’s University, Seoul 04310, Korea
| | - Sejeong Kim
- Department of Food and Nutrition, Sookmyung Women’s University, Seoul 04310, Korea
| | - Mi-Hwa Oh
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Beom-Young Park
- National Institute of Animal Science, RDA, Wanju 55365, Korea
| | - Kyoung-Hee Choi
- Department of Oral Mcirobiology, College of Dentistry, Wonkwang University, Iksan 54538, Korea
| | - Yohan Yoon
- Department of Food and Nutrition, Sookmyung Women’s University, Seoul 04310, Korea
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32
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Growth potential of Listeria monocytogenes in artificially contaminated celery and chicken salad. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.10.044] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Lee DY, Ha JH, Lee MK, Cho YS. Antimicrobial susceptibility and serotyping of Listeria monocytogenes isolated from ready-to-eat seafood and food processing environments in Korea. Food Sci Biotechnol 2017; 26:287-291. [PMID: 30263540 DOI: 10.1007/s10068-017-0038-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2016] [Revised: 10/12/2016] [Accepted: 11/02/2016] [Indexed: 11/25/2022] Open
Abstract
We examined antimicrobial susceptibility and serotypes of 33 L. monocytogenes isolates collected from ready-to-eat seafood and food processing environments. The isolated strains belonged to the 1/2b (73%), 4b (15%), and 1/2a (12%) serotypes; 11 of the obtained environmental swab samples belonged to the 1/2b serogroup. Antimicrobial resistance to benzyl penicillin (100%), clindamycin (100%), oxacillin (100%), ampicillin (97%), and tetracycline (18%) was detected, and 27/33 isolates (82%) showed resistance to four antibiotics and 6/33 (18%) were resistant to five. Total typing by automated repetitive sequence-based PCR revealed that the 33 isolates grouped into four distinct clusters with significantly correlated serotypes. These findings provide important information about the safety of ready-to-eat seafood and suggest that control measures should be adopted in order to mitigate the risk to humans posed by L. monocytogenes contaminated seafood.
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Affiliation(s)
- Da Yeon Lee
- 1Food Analysis Center, Korea Food Research Institute, Seongnam, Gyeonggi, 13539 Korea
| | - Jae Ho Ha
- World Institute of Kimchi, Gwangju, 61755 Korea
| | - Myung Ki Lee
- 3Traditional Food Research Group, Korea Food Research Institute, Seongnam, Gyeonggi, 13539 Korea
| | - Yong Sun Cho
- 1Food Analysis Center, Korea Food Research Institute, Seongnam, Gyeonggi, 13539 Korea
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Possas AMM, Posada-Izquierdo GD, Pérez-Rodríguez F, García-Gimeno RM. Modeling the Transfer ofSalmonellaEnteritidis during Slicing of Ready-to-Eat Turkey Products Treated with Thyme Essential Oil. J Food Sci 2016; 81:M2770-M2775. [DOI: 10.1111/1750-3841.13506] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 07/29/2016] [Accepted: 08/25/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Arícia M. M. Possas
- Dept. of Food Science and Technology, Intl. Campus of Excellence in the AgriFood Sector (CeiA3); Univ. of Córdoba; C-1 14014 Córdoba Spain
| | - Guiomar D. Posada-Izquierdo
- Dept. of Food Science and Technology, Intl. Campus of Excellence in the AgriFood Sector (CeiA3); Univ. of Córdoba; C-1 14014 Córdoba Spain
| | - Fernando Pérez-Rodríguez
- Dept. of Food Science and Technology, Intl. Campus of Excellence in the AgriFood Sector (CeiA3); Univ. of Córdoba; C-1 14014 Córdoba Spain
| | - Rosa M. García-Gimeno
- Dept. of Food Science and Technology, Intl. Campus of Excellence in the AgriFood Sector (CeiA3); Univ. of Córdoba; C-1 14014 Córdoba Spain
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Patrignani F, Siroli L, Gardini F, Lanciotti R. Contribution of Two Different Packaging Material to Microbial Contamination of Peaches: Implications in Their Microbiological Quality. Front Microbiol 2016; 7:938. [PMID: 27379067 PMCID: PMC4909747 DOI: 10.3389/fmicb.2016.00938] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 05/31/2016] [Indexed: 11/13/2022] Open
Abstract
AIM AIM of this work was understanding the microbial transfer dynamics from packaging to packed peaches in relation to the packaging used. METHOD AND RESULTS A challenge test was performed, inoculating Escherichia coli, Pseudomonas spp. and Saccharomyces cerevisiae on cardboards and RPC (Reusable Plastic Containers), and monitoring their cell loads on fruits according to a probabilistic model and a Response Surface Methodology (RSM) in relation to several independent variables (number of fruit lesions, fruit temperature storage and commercialization time). The data recorded on packed peaches for Pseudomonas and S. cerevisiae were modeled to fit the second order model to study the main, interactive and quadratic effects of the independent variables on the cell loads of target microorganisms as well as on the shelf-life of the fruits in relation to packaging material used. The data collected for E. coli were codified as presence (1) or absence (0) and modeled with a logistic regression analysis to assess the probability of E. coli transferring from packaging to fruits in relation to the adopted variables. The data showed a higher contamination frequency of the fruits packed in plastic than in cardboard. Increasing the storage temperature and the number of lesions, the probability of transferring of E. coli from packaging materials to fruits increased, independently on commercialization time or packaging used. For Pseudomonas, the contamination levels detected on fruits packaged in plastic were significantly higher compared to those found on fruits packed in cardboard, independently on the considered variables. The polynomial equations showed the S. cerevisiae cell loads of fruits stored in plastic was positively affected by the quadratic term of temperature. CONCLUSIONS the use of cardboard, compared to plastic, can significantly reduce the potential of microbial transferring from packaging to fruits. The probabilistic and kinetic models used showed a higher microbiological qualities of peaches stored in cardboard boxes, independently on the independent variables considered. The best performances of cardboard, compared to plastic, was probably due to its capability to entrap microbial cells. SIGNIFICANCE AND IMPACT cardboard reduces fruit contamination and increases their shelf-life with positive fallouts on fruit shelf-life and all the logistic and distribution chain.
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Affiliation(s)
| | | | | | - Rosalba Lanciotti
- Department of Agricultural and Food Sciences, University of BolognaCesena, Italy
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Montiel R, Martín-Cabrejas I, Peirotén Á, Medina M. Reuterin, lactoperoxidase, lactoferrin and high hydrostatic pressure treatments on the characteristics of cooked ham. INNOV FOOD SCI EMERG 2016. [DOI: 10.1016/j.ifset.2016.04.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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38
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Montiel R, Martín-Cabrejas I, Medina M. Natural antimicrobials and high-pressure treatments on the inactivation of Salmonella Enteritidis and Escherichia coli O157:H7 in cold-smoked salmon. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:2573-2578. [PMID: 26268416 DOI: 10.1002/jsfa.7378] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2015] [Revised: 08/06/2015] [Accepted: 08/10/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND High hydrostatic pressure (HHP) combined with reuterin and lactoperoxidase system (LPS) has exerted antimicrobial activity against Listeria monocytogenes in cold-smoked salmon at chilled temperatures. Therefore the purpose of this work was to evaluate the effect of HHP combined with reuterin, LPS and lactoferrin (LF) on the survival of Salmonella enterica subsp. enterica serovar Enteritidis and Escherichia coli O157:H7 in cold-smoked salmon stored at 4 and 10 °C. RESULTS Salmonella Enteritidis and E. coli O157:H7 were reduced more than 3 log colony-forming units (CFU) g(-1) by the pressure treatment (450 MPa/5 min). LPS slightly diminished pathogen levels throughout storage, whereas no effect was recorded when reuterin or LF was added. The Salmonella population was below the detection limit (<1 log CFU g(-1) ) during the storage of HHP-treated smoked salmon at 4 and 10 °C. The antimicrobial activity of HHP against E. coli O157:H7 was increased when 450 MPa was applied in combination with LPS in cold-smoked salmon at 4 and 10 °C. CONCLUSION HHP at 450 MPa/5 min inactivated S. Enteritidis in cold-smoked salmon and in combination with LPS would be useful as a hurdle technology approach against E. coli O157:H7, even under mild temperature abuse conditions. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Raquel Montiel
- Departamento Tecnología de Alimentos, INIA, Carretera de La Coruña Km 7, E-28040, Madrid, Spain
| | - Izaskun Martín-Cabrejas
- Departamento Tecnología de Alimentos, INIA, Carretera de La Coruña Km 7, E-28040, Madrid, Spain
| | - Margarita Medina
- Departamento Tecnología de Alimentos, INIA, Carretera de La Coruña Km 7, E-28040, Madrid, Spain
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Lakicevic B, Nastasijevic I. Listeria monocytogenesin retail establishments: Contamination routes and control strategies. FOOD REVIEWS INTERNATIONAL 2016. [DOI: 10.1080/87559129.2016.1175017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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40
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Bernini V, Dalzini E, Lazzi C, Bottari B, Gatti M, Neviani E. Cutting procedures might be responsible for Listeria monocytogenes contamination of foods: The case of Gorgonzola cheese. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.09.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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41
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Zoz F, Iaconelli C, Lang E, Iddir H, Guyot S, Grandvalet C, Gervais P, Beney L. Control of Relative Air Humidity as a Potential Means to Improve Hygiene on Surfaces: A Preliminary Approach with Listeria monocytogenes. PLoS One 2016; 11:e0148418. [PMID: 26840373 PMCID: PMC4739610 DOI: 10.1371/journal.pone.0148418] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Accepted: 01/18/2016] [Indexed: 12/30/2022] Open
Abstract
Relative air humidity fluctuations could potentially affect the development and persistence of pathogenic microorganisms in their environments. This study aimed to characterize the impact of relative air humidity (RH) variations on the survival of Listeria monocytogenes, a bacterium persisting on food processing plant surfaces. To assess conditions leading to the lowest survival rate, four strains of L. monocytogenes (EGDe, CCL500, CCL128, and LO28) were exposed to different RH conditions (75%, 68%, 43% and 11%) with different drying kinetics and then rehydrated either progressively or instantaneously. The main factors that affected the survival of L. monocytogenes were RH level and rehydration kinetics. Lowest survival rates between 1% and 0.001% were obtained after 3 hours of treatment under optimal conditions (68% RH and instantaneous rehydration). The survival rate was decreased under 0.001% after prolonged exposure (16h) of cells under optimal conditions. Application of two successive dehydration and rehydration cycles led to an additional decrease in survival rate. This preliminary study, performed in model conditions with L. monocytogenes, showed that controlled ambient RH fluctuations could offer new possibilities to control foodborne pathogens in food processing environments and improve food safety.
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Affiliation(s)
- Fiona Zoz
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Cyril Iaconelli
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Emilie Lang
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Hayet Iddir
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Stéphane Guyot
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Cosette Grandvalet
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Patrick Gervais
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
| | - Laurent Beney
- UMR PAM Université Bourgogne-Franche-Comté / AgroSup Dijon, Dijon, France
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Heinrich V, Zunabovic M, Nehm L, Bergmair J, Kneifel W. Influence of argon modified atmosphere packaging on the growth potential of strains of Listeria monocytogenes and Escherichia coli. Food Control 2016. [DOI: 10.1016/j.foodcont.2015.06.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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43
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Wang L, Zhao L, Yuan J, Jin TZ. Application of a novel antimicrobial coating on roast beef for inactivation and inhibition of Listeria monocytogenes during storage. Int J Food Microbiol 2015; 211:66-72. [DOI: 10.1016/j.ijfoodmicro.2015.07.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 06/30/2015] [Accepted: 07/05/2015] [Indexed: 10/23/2022]
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44
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de Candia S, Morea M, Baruzzi F. Eradication of high viable loads of Listeria monocytogenes contaminating food-contact surfaces. Front Microbiol 2015; 6:733. [PMID: 26236306 PMCID: PMC4503923 DOI: 10.3389/fmicb.2015.00733] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2015] [Accepted: 07/03/2015] [Indexed: 11/23/2022] Open
Abstract
This study demonstrates the efficacy of cold gaseous ozone treatments at low concentrations in the eradication of high Listeria monocytogenes viable cell loads from glass, polypropylene, stainless steel, and expanded polystyrene food-contact surfaces. Using a step by step approach, involving the selection of the most resistant strain-surface combinations, 11 Listeria sp. strains resulted inactivated by a continuous ozone flow at 1.07 mg m(-3) after 24 or 48 h of cold incubation, depending on both strain and surface evaluated. Increasing the inoculum level to 9 log CFU coupon(-1), the best inactivation rate was obtained after 48 h of treatment at 3.21 mg m(-3) ozone concentration when cells were deposited onto stainless steel and expanded polystyrene coupons, resulted the most resistant food-contact surfaces in the previous assays. The addition of naturally contaminated meat extract to a high load of L. monocytogenes LMG 23775 cells, the most resistant strain out of the 11 assayed Listeria sp. strains, led to its complete inactivation after 4 days of treatment. To the best of our knowledge, this is the first report describing the survival of L. monocytogenes and the effect of ozone treatment under cold storage conditions on expanded polystyrene, a commonly used material in food packaging. The results of this study could be useful for reducing pathogen cross-contamination phenomena during cold food storage.
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Affiliation(s)
| | | | - Federico Baruzzi
- Institute of Sciences of Food Production, National Research Council of ItalyBari, Italy
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45
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Mertz AW, O'Bryan CA, Crandall PG, Ricke SC, Morawicki R. The Elimination of Listeria Monocytogenes Attached to Stainless Steel or Aluminum Using Multiple Hurdles. J Food Sci 2015; 80:M1557-62. [PMID: 26033521 DOI: 10.1111/1750-3841.12926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Accepted: 05/06/2015] [Indexed: 12/01/2022]
Abstract
UNLABELLED Ready-to-eat luncheon meats sliced in retail delis have been found to pose the greatest risk of foodborne illness from Listeria monocytogenes among all ready-to-eat foods. Slicers used in delis have many removable parts that are connected with seals and gaskets, with spaces, cracks and crevices that are difficult to clean adequately and may provide a niche for L. monocytogenes survival. Standard cleaning and sanitizing practices used by deli employees may not eliminate Listeria in these niches. Moist heat is known to be more effective against L. monocytogenes than dry heat at the same temperature and time. The study reported here investigated the effects of moist heat combined with quaternary ammonium compounds (5 or 10 ppm), chlorine (10 or 25 ppm) or peracetic acid (10 or 25 ppm) on inactivating L. monocytogenes attached to stainless steel or aluminum coupons cut from commercial deli meat slicer components. All sanitizers when used alone resulted in a 2- to 3-log reduction of L. monocytogenes on stainless steel or aluminum surfaces, while moist heat alone resulted in a 3- to 4-log reduction. When combined with heat the quaternary ammonium was used at 5 ppm, peracetic acid at 10 ppm and chlorine at 10 ppm. When the 2 lethal treatments were combined there was a 5- to7-log reduction as compared to initial inoculation. PRACTICAL APPLICATION The results of this study will provide a better understanding and potential methods for the sanitization of industrial deli meat slicers. In turn, the knowledge gained from this study can reduce the risk of contamination and outbreaks of L. monocytogenes and other food-borne pathogens for consumers.
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Affiliation(s)
- Alexandria W Mertz
- Authors Mertz, O'Bryan, Crandall, Ricke, and Morawicki are with Dept. of Food Science, Univ. of Arkansas, Fayetteville, AR, 72704, U.S.A
| | - Corliss A O'Bryan
- Authors Mertz, O'Bryan, Crandall, Ricke, and Morawicki are with Dept. of Food Science, Univ. of Arkansas, Fayetteville, AR, 72704, U.S.A.,Authors O'Bryan, Crandall, and Ricke are with Center for Food Safety, Univ. of Arkansas, Fayetteville, AR, 72704, U.S.A
| | - Philip G Crandall
- Authors Mertz, O'Bryan, Crandall, Ricke, and Morawicki are with Dept. of Food Science, Univ. of Arkansas, Fayetteville, AR, 72704, U.S.A.,Authors O'Bryan, Crandall, and Ricke are with Center for Food Safety, Univ. of Arkansas, Fayetteville, AR, 72704, U.S.A
| | - Steven C Ricke
- Authors Mertz, O'Bryan, Crandall, Ricke, and Morawicki are with Dept. of Food Science, Univ. of Arkansas, Fayetteville, AR, 72704, U.S.A.,Authors O'Bryan, Crandall, and Ricke are with Center for Food Safety, Univ. of Arkansas, Fayetteville, AR, 72704, U.S.A
| | - Rubén Morawicki
- Authors Mertz, O'Bryan, Crandall, Ricke, and Morawicki are with Dept. of Food Science, Univ. of Arkansas, Fayetteville, AR, 72704, U.S.A
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46
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Montiel R, Martín-Cabrejas I, Medina M. Reuterin, lactoperoxidase, lactoferrin and high hydrostatic pressure on the inactivation of food-borne pathogens in cooked ham. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.11.010] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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47
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Yeater MC, Kirsch KR, Taylor TM, Mitchell J, Osburn WN. Effectiveness of sanitizing products on controlling selected pathogen surrogates on retail deli slicers. J Food Prot 2015; 78:707-15. [PMID: 25836395 DOI: 10.4315/0362-028x.jfp-14-400] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
The objectives of this study were (i) to assess the efficacy of quaternary ammonium chloride-based wet foam (WF) and dry foam (DF) sanitizer systems (600 ppm) for reducing Listeria innocua (a nonpathogenic surrogate of Listeria monocytogenes) or a 100.0 μg/ml rifampin-resistant Salmonella Typhimurium LT2 (a nonpathogenic surrogate of Salmonella enterica serovar Typhimurium) on niche and transfer point areas of an unwashed retail deli slicer as compared with traditional chlorine (Cl(-)) treatment (200 ppm) and (ii) to compare sanitizer surface contact times (10 and 15 min) for pathogen surrogate control. Turkey frankfurter slurries inoculated with L. innocua or Salmonella Typhimurium were used to inoculate seven high-risk sites on a commercial slicer. After 30 min of bacterial attachment, slicers were dry wiped to remove excess food matter, followed by a randomly assigned sanitizer treatment. Surviving pathogen surrogate cells were enumerated on modified Oxford's agar not containing antimicrobic supplement (L. innocua) or on tryptic soy agar supplemented with 100 μg/ml rifampin (Salmonella Typhimurium LT2). Replicate-specific L. innocua and Salmonella Typhimurium reductions were calculated as log CFU per square centimeter of control minus log CFU per square centimeter of enumerated survivors for each site. For both organisms, all sanitizer treatments differed from each other, with Cl(-) producing the least reduction and WF the greatest reduction. A significant (P < 0.05) site-by-treatment interaction was observed. The results of the study indicate that quaternary ammonium chloride sanitizers (600 ppm) applied by both WF and DF were more effective at reducing L. innocua and Salmonella Typhimurium than a traditional Cl sanitizer (200 ppm) on unwashed slicer surfaces.
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Affiliation(s)
- Michael C Yeater
- Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, Texas 77843-2471, USA
| | - Katie R Kirsch
- Department of Nutrition and Food Science, Texas A&M University, College Station, Texas 77843-2253, USA
| | - T Matthew Taylor
- Department of Animal Science, Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, Texas 77843-2471, USA
| | - Jeff Mitchell
- Chemstar Corporation, 120 Interstate West Parkway, Lithia Springs, Georgia 30122, USA
| | - Wesley N Osburn
- Department of Animal Science, Department of Animal Science, Texas A&M AgriLife Research, Texas A&M University, College Station, Texas 77843-2471, USA.
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48
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Casco G, Taylor TM, Alvarado C. Evaluation of novel micronized encapsulated essential oil-containing phosphate and lactate blends for growth inhibition of Listeria monocytogenes and Salmonella on poultry bologna, pork ham, and roast beef ready-to-eat deli loaves. J Food Prot 2015; 78:698-706. [PMID: 25836394 DOI: 10.4315/0362-028x.jfp-14-273] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Essential oils and their constituents are reported to possess potent antimicrobial activity, but their use in food processing is limited because of low solubility in aqueous systems and volatilization during processing. Two proprietary noncommercial essential oil-containing phosphate blends were evaluated for antimicrobial activity against Salmonella enterica cocktail (SC)-and Listeria monocytogenes (Lm)-inoculated deli meat products made from pork, poultry, or beef. Four treatments were tested on restructured cured pork ham, emulsified chicken bologna, and restructured beef loaf: nonencapsulated essential oil with phosphate version 1 at 0.45% of final batch (EOV145; chicken and pork, or EEOV245 beef), micronized encapsulated essential oil with phosphate version 2 at 0.60% of final batch (EEOV260), a 2.0% potassium lactate (PL) control, and a negative control (CN) with no applied antimicrobial agent. Compared with the CN, none of the antimicrobial agents (EEOV260, EOV145, PL) successfully limited Lm or SC growth to <2.0 log cycles over 49 days or 35 days of refrigerated storage, respectively. The PL and EEOV260-treated ham loaves did show Lm growth limiting ability of up to 1 log cycle by days 35 and 42. On formed roast beef, the EEOV260 was able to extend the lag phase and inhibited the growth of Lm in the same manner as the PL. For SC-treated samples, the following effects were observed: in poultry bologna treated with EEOV260, a lag-phase extension was observed through 35 days of storage compared with the other samples. For pork deli loaves, the EEOV260 inhibited growth of SC at days 21 and 28 to the same level of efficacy as PL (0.5 log cycle). In roast beef samples, on day 35, the SC growth was inhibited ca. 0.5 log CFU/g by EEOV260 when compared with the CN. In conclusion the EEOV260 can function to replace PL to limit Salmonella and Lm growth in ready-to-eat deli products. Further testing is needed to ensure consumer acceptability.
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Affiliation(s)
- G Casco
- Department of Poultry Science, Texas A&M University, College Station, Texas 77843, USA
| | - T M Taylor
- Department of Animal Science, Texas A&M University, College Station, Texas 77843, USA
| | - C Alvarado
- Department of Poultry Science, Texas A&M University, College Station, Texas 77843, USA.
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49
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Musavian HS, Butt TM, Larsen AB, Krebs N. Combined steam-ultrasound treatment of 2 seconds achieves significant high aerobic count and Enterobacteriaceae reduction on naturally contaminated food boxes, crates, conveyor belts, and meat knives. J Food Prot 2015; 78:430-5. [PMID: 25710163 DOI: 10.4315/0362-028x.jfp-14-155] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Food contact surfaces require rigorous sanitation procedures for decontamination, although these methods very often fail to efficiently clean and disinfect surfaces that are visibly contaminated with food residues and possible biofilms. In this study, the results of a short treatment (1 to 2 s) of combined steam (95°C) and ultrasound (SonoSteam) of industrial fish and meat transportation boxes and live-chicken transportation crates naturally contaminated with food and fecal residues were investigated. Aerobic counts of 5.0 to 6.0 log CFU/24 cm(2) and an Enterobacteriaceae spp. level of 2.0 CFU/24 cm(2) were found on the surfaces prior to the treatment. After 1 s of treatment, the aerobic counts were significantly (P < 0.0001) reduced, and within 2 s, reductions below the detection limit (<10 CFU) were reached. Enterobacteriaceae spp. were reduced to a level below the detection limit with only 1 s of treatment. Two seconds of steam-ultrasound treatment was also applied on two different types of plastic modular conveyor belts with hinge pins and one type of flat flexible rubber belt, all visibly contaminated with food residues. The aerobic counts of 3.0 to 5.0 CFU/50 cm(2) were significantly (P < 0.05) reduced, while Enterobacteriaceae spp. were reduced to a level below the detection limit. Industrial meat knives were contaminated with aerobic counts of 6.0 log CFU/5 cm(2) on the handle and 5.2 log CFU/14 cm(2) on the steel. The level of Enterobacteriaceae spp. contamination was approximately 2.5 log CFU on the handle and steel. Two seconds of steam-ultrasound treatment reduced the aerobic counts and Enterobacteriaceae spp. to levels below the detection limit on both handle and steel. This study shows that the steam-ultrasound treatment may be an effective replacement for disinfection processes and that it can be used for continuous disinfection at fast process lines. However, the treatment may not be able to replace efficient cleaning processes used to remove high loads of debris.
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Affiliation(s)
| | - Tariq M Butt
- SonoSteam, FORCE Technology, Park Allé 345, 2605 Brøndby, Denmark
| | | | - Niels Krebs
- SonoSteam, FORCE Technology, Park Allé 345, 2605 Brøndby, Denmark
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50
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Behaviour of Escherichia coli O157 (VTEC), Salmonella Typhimurium and Listeria monocytogenes during the manufacture, ripening and shelf life of low fat salami. Food Control 2015. [DOI: 10.1016/j.foodcont.2014.07.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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