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Toit SAD, Rip D. Exploring the genetic variability, virulence factors, and antibiotic resistance of Listeria monocytogenes from fresh produce, ready-to-eat hummus, and food-processing environments. J Food Sci 2024. [PMID: 39327637 DOI: 10.1111/1750-3841.17399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2024] [Revised: 08/08/2024] [Accepted: 09/01/2024] [Indexed: 09/28/2024]
Abstract
Listeria monocytogenes is ubiquitous in nature and persistent in food-processing facilities, farms, retail stores, and home and restaurant kitchens. Current research suggests ready-to-eat (RTE) products (including RTE hummus and fresh produce) to be of increasing interest and concern. These foods are typically stored at refrigeration temperatures suited to the survival of L. monocytogenes and are consumed without further processing. Since L. monocytogenes is ubiquitous in agricultural environments, the cultivation of fresh produce predisposes it to contamination. The contamination of RTE foods originates either from raw ingredients or, more commonly, from cross-contamination within food-processing facilities. Research on the food-processing environment has been recommended to reduce the incidence of L. monocytogenes in foods. The consumption of contaminated foods by immunocompromised individuals causes invasive listeriosis, with a 20% to 30% fatality rate despite treatment. The emergence of antibiotic-resistant strains has reduced the effectiveness of modern medicine and may increase morbidity and mortality. Without epidemiological surveillance and identifying trends in disease determinants, no action can be taken to improve food safety and mitigate the risk of such outbreaks.
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Affiliation(s)
- Samantha Anne du Toit
- Department of Food Science, Stellenbosch University Matieland, Stellenbosch, South Africa
| | - Diane Rip
- Department of Food Science, Stellenbosch University Matieland, Stellenbosch, South Africa
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2
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Margalho LP, Graça JS, Kamimura BA, Lee SHI, Canales HDS, Chincha AIA, Caturla MYR, Brexó RP, Crucello A, Alvarenga VO, Cruz AG, Oliveira CAF, Sant'Ana AS. Enterotoxigenic Staphylococcus aureus in Brazilian artisanal cheeses: Occurrence, counts, phenotypic and genotypic profiles. Food Microbiol 2024; 121:104531. [PMID: 38637091 DOI: 10.1016/j.fm.2024.104531] [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: 10/13/2023] [Revised: 03/24/2024] [Accepted: 04/02/2024] [Indexed: 04/20/2024]
Abstract
The present study aimed to assess the occurrence and counts of Staphylococcus aureus in Brazilian artisanal cheeses (BAC) produced in five regions of Brazil: Coalho and Manteiga (Northeast region); Colonial and Serrano (South); Caipira (Central-West); Marajó (North); and Minas Artisanal cheeses, from Araxá, Campos das Vertentes, Cerrado, Serro and Canastra microregions (Southeast). The resistance to chlorine-based sanitizers, ability to attach to stainless steel surfaces, and antibiogram profile of a large set of S. aureus strains (n = 585) were assessed. Further, a total of 42 isolates were evaluated for the presence of enterotoxigenic genes (sea, seb, sec, sed, see, seg, sei, sej, and ser) and submitted to typing using pulsed-field gel electrophoresis (PFGE). BAC presented high counts of S. aureus (3.4-6.4 log CFU/g), varying from 25 to 62.5%. From the S. aureus strains (n = 585) assessed, 16% could resist 200 ppm of sodium hypochlorite, whereas 87.6% produced strong ability to attach to stainless steel surfaces, corroborating with S. aureus ability to persist and spread in the environment. Furthermore, the relatively high frequency (80.5%) of multidrug-resistant S. aureus and the presence of enterotoxin genes in 92.6% of the strains is of utmost attention. It reveals the lurking threat of SFP that can survive when conditions are favorable. The presence of enterotoxigenic and antimicrobial-resistant strains of S. aureus in cheese constitutes a potential risk to public health. This result calls for better control of cheese contamination sources, and taking hygienic measures is necessary for food safety. More attention should be paid to animal welfare and hygiene practices in some dairy farms during manufacturing to enhance the microbiological quality of traditional cheese products.
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Affiliation(s)
- Larissa P Margalho
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil
| | - Juliana S Graça
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil
| | - Bruna A Kamimura
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil
| | - Sarah H I Lee
- Department of Food Engineering, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP, Brazil
| | - Héctor D S Canales
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil
| | - Alexandra I A Chincha
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil
| | - Magdevis Y R Caturla
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil
| | - Ramon P Brexó
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil
| | - Aline Crucello
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil
| | - Verônica O Alvarenga
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil; Department of Food, Faculty of Pharmacy, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Adriano G Cruz
- Department of Food, Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Carlos Augusto F Oliveira
- Department of Food Engineering, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, SP, Brazil
| | - Anderson S Sant'Ana
- Department of Food Science and Nutrition, Faculty of Food Engineering, University of Campinas, Campinas, SP, Brazil.
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Finger JAFF, Santos IM, Silva GA, Bernardino MC, Pinto UM, Maffei DF. Minimally Processed Vegetables in Brazil: An Overview of Marketing, Processing, and Microbiological Aspects. Foods 2023; 12:foods12112259. [PMID: 37297503 DOI: 10.3390/foods12112259] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 05/30/2023] [Accepted: 06/01/2023] [Indexed: 06/12/2023] Open
Abstract
The global demand for minimally processed vegetables (MPVs) has grown, driven by changes in the population's lifestyle. MPVs are fresh vegetables that undergo several processing steps, resulting in ready-to-eat products, providing convenience for consumers and food companies. Among the processing steps, washing-disinfection plays an important role in reducing the microbial load and eliminating pathogens that may be present. However, poor hygiene practices can jeopardize the microbiological quality and safety of these products, thereby posing potential risks to consumer health. This study provides an overview of minimally processed vegetables (MPVs), with a specific focus on the Brazilian market. It includes information on the pricing of fresh vegetables and MPVs, as well as an examination of the various processing steps involved, and the microbiological aspects associated with MPVs. Data on the occurrence of hygiene indicators and pathogenic microorganisms in these products are presented. The focus of most studies has been on the detection of Escherichia coli, Salmonella spp., and Listeria monocytogenes, with prevalence rates ranging from 0.7% to 100%, 0.6% to 26.7%, and 0.2% to 33.3%, respectively. Foodborne outbreaks associated with the consumption of fresh vegetables in Brazil between 2000 and 2021 were also addressed. Although there is no information about whether these vegetables were consumed as fresh vegetables or MPVs, these data highlight the need for control measures to guarantee products with quality and safety to consumers.
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Affiliation(s)
- Jéssica A F F Finger
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-000, SP, Brazil
- Food Research Center (FoRC-CEPID), Sao Paulo 05508-080, SP, Brazil
| | - Isabela M Santos
- Department of Agri-Food Industry, Food and Nutrition, "Luiz de Queiroz" College of Agriculture, University of Sao Paulo, Piracicaba 13418-900, SP, Brazil
| | - Guilherme A Silva
- Department of Nutrition, Faculty of Public Health, University of Sao Paulo, Sao Paulo 01246-904, SP, Brazil
| | - Mariana C Bernardino
- Department of Nutrition, Faculty of Public Health, University of Sao Paulo, Sao Paulo 01246-904, SP, Brazil
| | - Uelinton M Pinto
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo 05508-000, SP, Brazil
- Food Research Center (FoRC-CEPID), Sao Paulo 05508-080, SP, Brazil
| | - Daniele F Maffei
- Food Research Center (FoRC-CEPID), Sao Paulo 05508-080, SP, Brazil
- Department of Agri-Food Industry, Food and Nutrition, "Luiz de Queiroz" College of Agriculture, University of Sao Paulo, Piracicaba 13418-900, SP, Brazil
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GOMEZ CARLYB, MITCHELL JADE, RYSER ELLIOTT, MARKS BRADLEYP. Listeriosis Risk Model for Cancer Patients Who Consume Ready-to-Eat Salad. J Food Prot 2023; 86:100087. [PMID: 37004807 DOI: 10.1016/j.jfp.2023.100087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 03/20/2023] [Accepted: 03/28/2023] [Indexed: 04/03/2023]
Abstract
The foodborne pathogen Listeria monocytogenes generally infects immunocompromised individuals, such as cancer patients, more frequently and with higher morbidity and mortality than the general population. Because of the anticipated risk associated with L. monocytogenes and other pathogens in produce, immunocompromised individuals are often placed on neutropenic diets that exclude fresh produce, though these risks have not been quantified. Therefore, this study developed a data-driven risk model for listeriosis in cancer patients who consume ready-to-eat (RTE) salads, consisting of leafy greens, cucumbers, and tomatoes, as influenced by kitchen-scale treatments and storage practices. Monte Carlo simulations were used to model the risk of invasive listeriosis during one chemotherapy cycle. Refrigerating all salad components decreased median risk by approximately one-half log. For refrigerated salads with no treatment, the predicted median risk was ≤ 4.3 × 10-08. When salad ingredients were surface blanched with greens rinsed, the predicted risk decreased to 5.4 × 10-10. Predicted risk was lowest (1.4 × 10-13) for a blanched "salad" consisting of solely cucumbers and tomatoes. Interestingly, rinsing, as recommended by FDA only decreased median risk by 1 log. A sensitivity analysis revealed that the highly variable dose-response parameter k strongly influenced risk, indicating that reducing uncertainty in this variable may improve model accuracy. Overall, this study demonstrates that kitchen-scale pathogen reduction approaches have high risk-reduction efficacy and could be considered as an alternative to diets that exclude produce when making risk management decisions.
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AGBOOLA TD, BISI-JOHNSON MA. OCCURRENCE OF Listeria monocytogenes IN IRRIGATION WATER AND IRRIGATED VEGETABLES IN SELECTED AREAS OF OSUN STATE, NIGERIA. SCIENTIFIC AFRICAN 2022. [DOI: 10.1016/j.sciaf.2022.e01503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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De Marco I, Fusieger A, Nero LA, Kempka AP, Moroni LS. Bacteriocin-like inhibitory substances (BLIS) synthesized by Lactococcus lactis LLH20: Antilisterial activity and application for biopreservation of minimally processed lettuce (Lactuca sativa L.). BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Igo MJ, Strawn LK, Schaffner DW. Initial and Final Cell Concentrations Significantly Influence the Maximum Growth Rate of Listeria monocytogenes in Published Literature Data for Whole Intact Fresh Produce. J Food Prot 2022; 85:987-992. [PMID: 35435963 DOI: 10.4315/jfp-21-456] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Accepted: 04/07/2022] [Indexed: 11/11/2022]
Abstract
ABSTRACT Listeria monocytogenes has shown the ability to grow on fresh uncut produce; however, the factors that control growth are not well understood. Peer-reviewed journal articles (n = 29) meeting the inclusion criteria and related to the growth of L. monocytogenes on fresh produce were found through university library databases and Google Scholar searches. Growth models were fit to each of the extracted 130 data sets to estimate log CFU per day rates of growth by using the DMFit tool. Multiple linear stepwise regression models for factors influencing growth rate were developed using R software. Factors included were temperature, nutrient level of inoculation buffer, initial cell concentration, final cell concentration, inoculation method, container permeability, and surface characteristics. The full model produced adjusted R2, Akaike information criterion, and root mean square error values of 0.41, 488, and 1.61, respectively. Stepwise regression resulted in a reduced model with parameters for incubation temperature, inoculation buffer type, initial and final cell concentrations, container characteristics, and produce surface characteristics. Model fit statistics improved slightly in the reduced model. A further reduced three-parameter model included storage temperature and initial and final cell concentrations, with interaction terms. This three-parameter model had adjusted R2, Akaike information criterion, and root mean square error values of 0.66, 417, and 1.24, respectively. Incubation temperature (P = 1.00E-09) initial cell concentration (P = 3.05E-12), and final cell concentration (P = 4.17E-09) all had highly significant effects on maximum growth rate. Our findings show the importance of inoculum concentration and produce microbial carrying capacity on the estimated growth rate and highlight the overall importance that temperature has on growth rate. Future experiments should consider initial inoculum concentration carefully when conducting growth studies for L. monocytogenes on whole produce. HIGHLIGHTS
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Affiliation(s)
- Matthew J Igo
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901
| | - Laura K Strawn
- Department of Food Science, Virginia Polytechnical University, Blacksburg, Virginia 24060, USA
| | - Donald W Schaffner
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, New Jersey 08901
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Burnett E, Kucerova Z, Freeman M, Kathariou S, Chen J, Smikle M. Whole-Genome Sequencing Reveals Multiple Subpopulations of Dominant and Persistent Lineage I Isolates of Listeria monocytogenes in Two Meat Processing Facilities during 2011-2015. Microorganisms 2022; 10:microorganisms10051070. [PMID: 35630512 PMCID: PMC9147069 DOI: 10.3390/microorganisms10051070] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022] Open
Abstract
Listeria monocytogenes is a foodborne pathogen with a highly clonal population structure comprising multiple phylogenetic sub-groups that can persist within food processing environments and contaminate food. The epidemiology of L. monocytogenes is well-described in some developed countries; however, little is known about the prevalence and population structure of this pathogen in food and food processing environments located in less developed regions. The aim of this study was to determine the genetic characteristics and clonal relatedness of L. monocytogenes that were isolated from two Jamaican meat processing facilities. Of the 37 isolates collected between 2011 and 2015, only a single lineage II isolate was recovered (serotype 1/2c), and the remaining were lineage I isolates representing serotypes 4b, 1/2b, 3b, and two untypeable isolates. Pulsed-field gel electrophoresis (PFGE) delineated isolates into seven pulsotypes, and whole-genome sequencing (WGS) categorized most isolates within one of three clonal complexes (CC): CC2 (N = 12), CC5 (N = 11), and CC288 (N = 11). Isolates representing CC1 (N = 2) and CC9 (N = 1) were also recovered. Virulence-associated genes such as inlA and the LIPI-3 cluster were detected in multiple isolates, along with the stress survival islet cluster-1 (SSI-1), and benzalkonium (bcrABC) and cadmium (cad1, cad2, cad4) resistance cassettes. Multiple isolates that belong to the same CC and matching PFGE patterns were isolated from food and the environment from both facilities across multiple years, suggesting the presence of persistent strains of L. monocytogenes, and/or constant re-entry of the pathogens into the facilities from common sources. These findings highlight the ability of lineage I isolates of L. monocytogenes to colonize, persist, and predominate within two meat-producing environments, and underscores the need for robust surveillance strategies to monitor and mitigate against these important foodborne pathogens.
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Affiliation(s)
- Elton Burnett
- Institute of Parasitology, McGill University, 2111 Lakeshore Road, Montreal, QC H9X 3V9, Canada
- Department of Microbiology, University of the West Indies, Mona, Kingston 7, Jamaica;
- Correspondence:
| | - Zuzana Kucerova
- Centers for Disease Control and Prevention (CDC), 1600 Clifton Road, Atlanta, GA 30329, USA; (Z.K.); (M.F.); (J.C.)
| | - Molly Freeman
- Centers for Disease Control and Prevention (CDC), 1600 Clifton Road, Atlanta, GA 30329, USA; (Z.K.); (M.F.); (J.C.)
| | - Sophia Kathariou
- Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Raleigh, NC 27695, USA;
| | - Jessica Chen
- Centers for Disease Control and Prevention (CDC), 1600 Clifton Road, Atlanta, GA 30329, USA; (Z.K.); (M.F.); (J.C.)
| | - Monica Smikle
- Department of Microbiology, University of the West Indies, Mona, Kingston 7, Jamaica;
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9
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COSTA PV, NASCIMENTO JDS, COSTA LEDO, FERREIRA PBDM, BRANDÃO MLL. Listeria monocytogenes: challenges of microbiological control of food in Brazil. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.08322] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
| | | | | | | | - Marcelo Luiz Lima BRANDÃO
- Instituto Federal de Educação, Ciência e Tecnologia do Rio de Janeiro, Brasil; Fundação Oswaldo Cruz, Brasil
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Magdovitz BF, Gummalla S, Garren D, Thippareddi H, Berrang ME, Harrison MA. Prevalence of Listeria Species and Listeria monocytogenes on Raw Produce Arriving at Frozen Food Manufacturing Facilities. J Food Prot 2021; 84:1898-1903. [PMID: 34143180 DOI: 10.4315/jfp-21-064] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 06/17/2021] [Indexed: 11/11/2022]
Abstract
ABSTRACT The ubiquity of Listeria monocytogenes in the environment affects the food industry and presents concerns for frozen food facilities. This study determined the prevalence and numbers of Listeria species and L. monocytogenes on raw produce arriving at frozen food facilities. Raw produce was collected using multilevel blinding protocols to ensure anonymity of participants and avoid traceback. Five raw vegetables were selected: corn, carrots, green beans, peas, and spinach. Raw products were collected after arrival at the facilities but before cleaning or other preprocessing steps that are typically performed inside the facility. The U.S. Food and Drug Administration's Bacteriological Analytical Manual method for detection of Listeria spp. and L. monocytogenes was followed, with PCR screening followed by selective plating methods. Listeria numbers were estimated from positive samples using the most-probable-number (MPN) methodology. A total of 290 samples were collected, with 96 and 17 samples positive for Listeria spp. (33.1%) and L. monocytogenes (5.9%), respectively. Enumeration data for the 96 Listeria spp. samples indicated 82 samples had greater than 100 MPN of Listeria spp. per g and 14 samples had less than 100 MPN Listeria spp. per g. The prevalence of Listeria spp. varied by commodity: spinach (66.7%), peas (50%), corn (32.2%), green beans (22.2%), and carrots (13%). L. monocytogenes prevalence was determined in corn (13.6%), peas (6.3%), and green beans (4.2%) arriving at processing facilities. Such data were previously unavailable to frozen vegetable processors and are valuable in implementing process control standards. The prevalence and pathogen concentration data from raw commodities found in this study can provide the industry with information to conduct more accurate quantitative risk assessments and a baseline to model and target appropriate pathogen reduction steps during processing. HIGHLIGHTS
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Affiliation(s)
- Brittany F Magdovitz
- Department of Food Science and Technology, 1210 South Glebe Road, Arlington, Virginia 22204.,Center for Food Safety, 1210 South Glebe Road, Arlington, Virginia 22204
| | - Sanjay Gummalla
- American Frozen Food Institute, 1210 South Glebe Road, Arlington, Virginia 22204
| | - Donna Garren
- American Frozen Food Institute, 1210 South Glebe Road, Arlington, Virginia 22204
| | - Harshavardhan Thippareddi
- Center for Food Safety, 1210 South Glebe Road, Arlington, Virginia 22204.,Department of Poultry Science, University of Georgia, Athens, Georgia 30602
| | - Mark E Berrang
- U.S. Department of Agriculture, Agricultural Research Service, 950 College Station Road, Athens, Georgia 30605, USA
| | - Mark A Harrison
- Department of Food Science and Technology, 1210 South Glebe Road, Arlington, Virginia 22204.,Center for Food Safety, 1210 South Glebe Road, Arlington, Virginia 22204
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Gomez CB, Ryser ET, Marks BP. Kitchen-Scale Treatments for Reduction of Listeria monocytogenes in Prepared Produce. J Food Prot 2021; 84:1603-1609. [PMID: 34047798 DOI: 10.4315/jfp-21-019] [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] [Received: 01/15/2021] [Accepted: 05/20/2021] [Indexed: 12/31/2022]
Abstract
ABSTRACT Listeriosis, a foodborne illness caused by Listeria monocytogenes, has relatively low incidence, but a substantial mortality rate, particularly in immunocompromised populations. Because of the known risk of L. monocytogenes and other pathogens in produce, immunocompromised individuals are often placed on neutropenic diets that exclude fresh produce. Therefore, this study aimed to evaluate several kitchen-scale treatments as potential interventions to reduce L. monocytogenes in prepared produce. Cucumbers, apples, and celery were dip inoculated with a three-strain cocktail of L. monocytogenes and dried for 24 h. Inoculated products were subjected to the following treatments as applicable: commercial sanitizer soak (90 s, with agitation), tap water rinse (15 s), tap water soak (90 s, with agitation), surface blanching (25 s), tap water rinse (15 s) followed by peeling, and surface blanching (25 s) followed by peeling. In addition, inoculum uptake in celery and the impact of two types of peelers (mechanical crank and manual) were assessed. Treated samples were plated on differential media and incubated for 48 h at 37°C. L. monocytogenes populations were then enumerated and compared with the untreated control (in log CFUs per gram). All treatments lacked efficacy for celery, with reductions significantly less (P < 0.05) than in other products, likely because of inoculum internalization. The sanitizer soak, tap water rinse, and tap water soak did not differ in efficacy (P > 0.05), which was low for cucumbers (<1.5 log CFU/g), apples (<1.3 log CFU/g), and celery (<0.7 log CFU/g). The two types of apple peelers did not differ in efficacy (P > 0.05). Surface blanching and surface blanching followed by peeling were the most effective treatments for both cucumbers and apples (P < 0.05), with average reductions of 4.2 to 5.1 and 3.5 to 5.9 log CFU/g, respectively. HIGHLIGHTS
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Affiliation(s)
- Carly B Gomez
- Department of Biosystems and Agricultural Engineering, Michigan State University, 524 South Shaw Lane, East Lansing, Michigan 48824
| | - Elliot T Ryser
- Department of Food Science and Human Nutrition, Michigan State University, 469 Wilson Road #204, East Lansing, Michigan 48824, USA
| | - Bradley P Marks
- Department of Biosystems and Agricultural Engineering, Michigan State University, 524 South Shaw Lane, East Lansing, Michigan 48824
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12
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Effect of α-Terpineol on Chicken Meat Quality during Refrigerated Conditions. Foods 2021; 10:foods10081855. [PMID: 34441632 PMCID: PMC8392150 DOI: 10.3390/foods10081855] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 08/07/2021] [Accepted: 08/08/2021] [Indexed: 01/11/2023] Open
Abstract
The present study was designed to evaluate the in vitro antimicrobial properties of nine bioactive compounds (BACs). Applying the disc paper and minimum inhibitory concentration (MIC) assays, we found that the BACs with the widest spectrum of in vitro antibacterial activity against the studied bacteria were carvacrol and α-terpineol (αTPN). Subsequently, αTPN was selected and applied at different concentrations into the fresh minced chicken meat. The meat was then vacuum packaged and stored for 14 days at 4 °C. Physicochemical properties, lipid oxidation (thiobarbituric acid reactive substances, TBARS), electronic-nose-based smell detection, and microbiological characteristics were monitored. At day 14, meat treated with higher concentrations of αTPN (MIC-2 and MIC-4) exhibited a significantly increased pH and lightness (L*), increased yellowness (b*), decreased redness (a*), caused a significant decrease in water holding capacity (WHC), and decreased lipid oxidation by keeping TBARS scores lower than the control. Although αTPN showed perceptibly of overlapped aroma profiles, the E-nose was able to distinguish the odor accumulation of αTPN between the different meat groups. During the 2-week storage period, αTPN, particularly MIC-4, showed 5.3 log CFU/g reduction in aerobic mesophilic counts, causing total inhibition to the Pseudomonas lundessis, Listeria monocytogenes, and Salmonella Typhimurium. These promising results highlight that αTPN is exploitable to improve the shelf life and enhance the safety of meat and meat products.
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13
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Bouymajane A, Rhazi Filali F, Oulghazi S, Lafkih N, Ed-Dra A, Aboulkacem A, El Allaoui A, Ouhmidou B, Moumni M. Occurrence, antimicrobial resistance, serotyping and virulence genes of Listeria monocytogenes isolated from foods. Heliyon 2021; 7:e06169. [PMID: 33644461 PMCID: PMC7889945 DOI: 10.1016/j.heliyon.2021.e06169] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 06/06/2020] [Accepted: 01/28/2021] [Indexed: 11/23/2022] Open
Abstract
Listeria monocytogenes is a pathogen contaminated food, it is the cause of listeriosis worldwide. The aims of this study were to investigate the occurrence, antimicrobial resistance, serotyping and virulence genes of L. monocytogenes isolated from foods in Meknes city of Morocco. From June 2017 to May 2018, 520 food samples were randomly collected from a traditional market and two overcrowded popular neighborhoods (Lahdim and Hamria) and subjected to the detection of L. monocytogenes. Then, the antimicrobial susceptibility of the isolated strains were evaluated using the standard disk diffusion method and the determination of serotypes and virulence genes was performed by PCR. The results showed the detection of L. monocytogenes in fifteen (2.9%) of 520 samples, including three (5.7%) isolates in traditional whey, raw minced meat and raw sausage, two (3.8%) in raw milk and one (1.9%) in smen (traditional butter), raw bovine meat, raw poultry meat and raw fish, while salads and rayeb (traditional coagulated milk) were not contaminated. Among the fifteen isolated L. monocytogenes, nine (60%) belonged to the serogroup (1/2a, 1/2c, 3a and 3c), two (13.3%) belonged to the serogroup (1/2b, 3b, 4b and 4d) and four (26.6%) do not belong to any studied serogroup. Furthermore, fifteen (100%) isolates showed the presence of actA gene, fourteen (93.3%) harbored hlyA, prfA and plcB genes, thirteen (86.7%) carried inlA and inlC genes and twelve (80%) showed inlJ gene. The antimicrobial susceptibility analysis showed that the isolated strains were more resistant to amoxicillin/clavulanic acid (67.0%), erythromycin (60.0%), sulphamethoxazole (40.0%), ampicillin and sulphamethoxazole/trimethoprim (33.0%) and tetracycline (20.0%). Furthermore, 66.7% (10/15) were multidrug-resistant. From this study, we can conclude that foods marketed in Meknes city were contaminated by multidrug-resistant strains of L. monocytogenes harboring virulence genes, which may cause a serious risk to public health.
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Affiliation(s)
- Aziz Bouymajane
- Team of Microbiology and Health, Laboratory of Chemistry-Biology Applied to the Environment, Moulay Ismail University Faculty of Sciences, BP 11201 Zitoune Meknes, Morocco
| | - Fouzia Rhazi Filali
- Team of Microbiology and Health, Laboratory of Chemistry-Biology Applied to the Environment, Moulay Ismail University Faculty of Sciences, BP 11201 Zitoune Meknes, Morocco
| | - Said Oulghazi
- Cellular Genomics and Molecular Techniques of Investigations, Moulay Ismail University Faculty of Sciences, BP 11201 Zitoune Meknes, Morocco
| | - Nada Lafkih
- Cellular Genomics and Molecular Techniques of Investigations, Moulay Ismail University Faculty of Sciences, BP 11201 Zitoune Meknes, Morocco
| | - Abdelaziz Ed-Dra
- Team of Microbiology and Health, Laboratory of Chemistry-Biology Applied to the Environment, Moulay Ismail University Faculty of Sciences, BP 11201 Zitoune Meknes, Morocco
| | - Amal Aboulkacem
- Regional Laboratory of Epidemiological Diagnosis and Environmental Hygiene, Fez-Meknes, Morocco
| | - Abdallah El Allaoui
- Team of Microbiology and Health, Laboratory of Chemistry-Biology Applied to the Environment, Moulay Ismail University Faculty of Sciences, BP 11201 Zitoune Meknes, Morocco
| | - Bouchra Ouhmidou
- Laboratory of Bioactive Molecules, Structures and Functions, Faculty of Sciences and Technologies, Sidi Mohamed Ben Abdallah University, Fes, Morocco
| | - Mohieddine Moumni
- Cellular Genomics and Molecular Techniques of Investigations, Moulay Ismail University Faculty of Sciences, BP 11201 Zitoune Meknes, Morocco
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14
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Maćkiw E, Korsak D, Kowalska J, Felix B, Stasiak M, Kucharek K, Postupolski J. Incidence and genetic variability of Listeria monocytogenes isolated from vegetables in Poland. Int J Food Microbiol 2020; 339:109023. [PMID: 33341686 DOI: 10.1016/j.ijfoodmicro.2020.109023] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 12/08/2020] [Accepted: 12/09/2020] [Indexed: 02/07/2023]
Abstract
The aim of the present study is to investigate the prevalence and genetic diversity of Listeria monocytogenes in various fresh and frozen vegetable products available in Poland. The samples were collected at retail market within the framework of national official control and monitoring program. In the years 2016-2019 a total of 49 samples out of 8712 collected vegetable samples were positive for L. monocytogenes. Our findings demonstrated that the occurrence of L. monocytogenes in various vegetable products was generally low, on average only 0.56% in the studied years. All isolates were susceptible to 11 antimicrobial agents: penicillin, ampicillin, meropenem, erythromycin, sulfamethoxazole-trimethoprim, amoxicillin-clavulanic acid, ciprofloxacin, chloramphenicol, gentamicin, vancomycin, and tetracycline. All of them harbored virulence-associated genes (inlA, inlC, and lmo2672), 82% harbored inlJ gene and few of them (22%) also possessed the llsX gene. The majority of collected isolates (65%) belonged to molecular serogroup 1/2a-3a, followed by 4ab-4b-4d-4e (33%), and only one to serogroup 1/2b-3b-7 (2%). Isolates yielded 18 different restriction profiles, revealing a large cluster of contamination linked to frozen corn (21 strains) and distributed in 3 pulsotypes. MLST analysis classified selected isolates into nine clonal complexes (CCs). The obtained results contribute to characterizing the diversity of L. monocytogenes isolated from various vegetable products in Poland and their impact on food safety and public health.
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Affiliation(s)
- Elżbieta Maćkiw
- Department of Food Safety, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland.
| | - Dorota Korsak
- Department of Food Safety, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
| | - Joanna Kowalska
- Department of Food Safety, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
| | - Benjamin Felix
- European Union Reference Laboratory for L. monocytogenes, ANSES, Laboratory for Food Safety, University of Paris-Est, 94700 Maisons-Alfort, France
| | - Monika Stasiak
- Department of Food Safety, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
| | - Katarzyna Kucharek
- Department of Food Safety, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
| | - Jacek Postupolski
- Department of Food Safety, National Institute of Public Health - National Institute of Hygiene, Warsaw, Poland
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15
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Finger JAFF, Maffei DF, Dias M, Mendes MA, Pinto UM. Microbiological quality and safety of minimally processed parsley (Petroselinum crispum) sold in food markets, southeastern Brazil. J Appl Microbiol 2020; 131:272-280. [PMID: 33211380 DOI: 10.1111/jam.14935] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 10/22/2020] [Accepted: 11/13/2020] [Indexed: 01/31/2023]
Abstract
AIMS This study evaluated the microbiological quality and safety of minimally processed parsley sold in southeastern Brazilian food markets. METHODS AND RESULTS One hundred samples were submitted to the enumeration of Enterobacteriaceae by plating on MacConkey agar. Colonies of Enterobacteriaceae were randomly selected and identified by MALDI-TOF MS. Samples were also tested for Listeria monocytogenes and Salmonella sp. The mean count of Enterobacteriaceae was 6·0 ± 1·0 log CFU per gram, while 18 genera (including 30 species) of bacteria belonging to this family were identified. Salmonella and L. monocytogenes were not detected, while L. innocua was found in two samples and L. fleischmannii was found in one sample. Moreover generic Escherichia coli was found in three samples, all from different brands of minimally processed parsley. CONCLUSIONS Even though microbial pathogens were not isolated, a variety of indicator micro-organisms were identified, including vegetable spoilers and species capable of causing human opportunistic infections. These results suggest hygienic failures and/or lack of temperature control during processing and storage of these ready-to-eat products. SIGNIFICANCE AND IMPACT OF STUDY This study highlights the need for control measures during the production chain of minimally processed parsley in order to reduce microbial contamination and the risks of foodborne diseases.
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Affiliation(s)
- J A F F Finger
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil.,Food Research Center (FoRC-CEPID), Sao Paulo, SP, Brazil
| | - D F Maffei
- Food Research Center (FoRC-CEPID), Sao Paulo, SP, Brazil.,Department of Agri-food Industry, Food and Nutrition, Luiz de Queiroz" College of Agriculture, University of Sao Paulo, Piracicaba, SP, Brazil
| | - M Dias
- Dempster MS Lab, Department of Chemical Engineering, Polytechnic School, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - M A Mendes
- Dempster MS Lab, Department of Chemical Engineering, Polytechnic School, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - U M Pinto
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil.,Food Research Center (FoRC-CEPID), Sao Paulo, SP, Brazil
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16
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Kyere EO, Qiu GW, Md Zain SN, Palmer J, Wargent JJ, Fletcher GC, Flint S. A comparison of Listeria monocytogenes contamination in bagged and un-bagged lettuce in supermarkets. Lebensm Wiss Technol 2020. [DOI: 10.1016/j.lwt.2020.110022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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17
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da Silva DAF, Vallim DC, Rosas CDO, de Mello VM, Brandão MLL, de Filippis I. Genetic diversity of Listeria monocytogenes serotype 1/2a strains collected in Brazil by Multi-Virulence-Locus Sequence Typing. Lett Appl Microbiol 2020; 72:316-324. [PMID: 33063325 DOI: 10.1111/lam.13413] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 09/09/2020] [Accepted: 10/08/2020] [Indexed: 01/01/2023]
Abstract
Listeria monocytogenes is an opportunistic pathogen with the ability to adapt to different environmental conditions, resulting in safety issues for food producers. Foods contaminated by L. monocytogenes can represent a risk if consumed by susceptible individuals such as elderly, pregnant women and the immunocompromised. The aim of this study was to evaluate the genetic diversity of a collection of L. monocytogenes isolated from different matrices in Brazil during the period of 1979-2015. A total of 51 L. monocytogenes serotype 1/2a strains isolated from clinical samples (n = 3) and food samples (n = 48) were characterized by Multi-Virulence-Locus Sequence Typing (MVLST). The strains were assigned to nine virulence types (VT): VT-11 (n = 3, 5·9%), VT-45 (n = 27, 52·9%), VT-59 (n = 11, 21·6%), VT-68 (n = 3, 5·9%), VT-94 (n = 2, 3·9%), VT-107 (n = 2, 3·9%), VT-184 (n = 1, 1·9%), VT-185 (n = 1, 1·9%) and VT-186 (n = 1, 1·9%); and four of them (VT-11, VT-45, VT-59 and VT-68) have already been associated with cases of listeriosis worldwide. The VT-11, VT-59 (Epidemic Clone V) and VT-186 were identified in blood culture samples, as well as in different classes of foods. It is recommended that the epidemiological surveillance agencies evaluate the risk that foods contaminated with L. monocytogenes VTs pose to susceptible populations.
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Affiliation(s)
- D A F da Silva
- Laboratory of Microbiology of Food and Sanitizes, INCQS/Fiocruz, Rio de Janeiro, Brazil
| | - D C Vallim
- Laboratory of Bacterial Zoonoses - Listeria Sector, IOC/Fiocruz, Rio de Janeiro, Brazil
| | - C D O Rosas
- Laboratory of Microbiology of Food and Sanitizes, INCQS/Fiocruz, Rio de Janeiro, Brazil
| | - V M de Mello
- Laboratory of Microbiology of Food and Sanitizes, INCQS/Fiocruz, Rio de Janeiro, Brazil
| | - M L L Brandão
- Laboratory of Microbiology Control, Bio-Manguinhos/Fiocruz, Rio de Janeiro, Brazil
| | - I de Filippis
- Laboratory of Reference Microorganisms, INCQS/Fiocruz, Rio de Janeiro, Brazil
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18
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Bahrami A, Davis S, Mousavi Khaneghah A, Williams L. The efficiency of technologies used for epidemiological characterization of Listeria monocytogenes isolates : an update. Crit Rev Food Sci Nutr 2020; 62:1079-1091. [PMID: 33092402 DOI: 10.1080/10408398.2020.1835816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The characterization of pathogenic bacteria by providing information regarding the identification and source-tracking of the causes of outbreaks is vital for the epidemiological investigations of foodborne diseases. The knowledge of transmission of Listeria monocytogenes (L. monocytogenes) strains from the environment, directly or indirectly (through food processing facilities) to the final food products, due to the complexity of evaluating numerous, affecting parameters is quite limited. The food trade globalization also adds difficulties in tracking the association between the infection occurrence and causative pathogens, aiming to prevent their spread. The occurrence of listeriosis, a notifiable disease throughout the world, can either be sporadic or outbreak-related. Due to the importance of foodborne outbreaks from a public health aspect and its correspondence enormous economic losses, cross-linked surveillance studies regarding the contamination of foods by L. monocytogenes, besides identifying clusters and tracing the sources of infections on an international-scale to prevent and control L. monocytogenes outbreaks sounds very crucial. Contrary to the conventional typing methods, molecular-based techniques, such as whole-genome sequencing, owing to the capacity to discriminate L. monocytogenes strains down to single nucleotide differences, provide an accurate characterization of strains and tracking the causes of outbreaks. However, routinely using molecular-based methods depends on the required improvements in the affordability, proper timing, and preparing reliable, standardized bioinformatics facilities. This work was conducted to critically review the practical potential of diverse typing methods have been used for the characterization of L. monocytogenes and discuss how they might change the future of efforts for control of listeriosis.
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Affiliation(s)
- Akbar Bahrami
- Center for Excellence in Post-Harvest Technologies, North Carolina Agricultural, and Technical State University, North Carolina Research Campus, Kannapolis, North Carolina, USA
| | - Shurrita Davis
- Center for Excellence in Post-Harvest Technologies, North Carolina Agricultural, and Technical State University, North Carolina Research Campus, Kannapolis, North Carolina, USA
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food Engineering (FEA), University of Campinas (UNICAMP), Campinas, São Paulo, Brazil
| | - Leonard Williams
- Center for Excellence in Post-Harvest Technologies, North Carolina Agricultural, and Technical State University, North Carolina Research Campus, Kannapolis, North Carolina, USA
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19
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Sant'Anna PB, de Melo Franco BD, Maffei DF. Microbiological safety of ready-to-eat minimally processed vegetables in Brazil: an overview. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2020; 100:4664-4670. [PMID: 32329100 DOI: 10.1002/jsfa.10438] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/07/2020] [Accepted: 04/24/2020] [Indexed: 06/11/2023]
Abstract
The market of ready-to-eat minimally processed vegetables (RTE-MPV) is increasing in Brazil and many other countries. During processing, these vegetables go through several steps that modify their natural structure while maintaining the same nutritional and sensory attributes as the fresh produce. One of the most important steps is washing-disinfection, which aims to reduce the microbial load, prevent cross-contamination and inactivate pathogenic microorganisms that may be present. Nonetheless, the presence of pathogens and occurrence of foodborne illnesses associated with consumption of RTE-MPV concern consumers, governments and the food industry. This review brings an overview on the microbiological safety of RTE-MPV, focusing on Brazilian findings. Most of the published data are on detection of Salmonella spp. and Listeria monocytogenes, indicating that their prevalence may range from 0.4% to 12.5% and from 0.6% to 3.1%, respectively. The presence of these pathogens in fresh produce is unacceptable and risky, mainly in RTE-MPV, because consumers expect them to be clean and sanitized and consequently safe for consumption without any additional care. Therefore, proper control during the production of RTE-MPV is mandatory to guarantee products with quality and safety to consumers. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Pedro B Sant'Anna
- Department of Biological Sciences, 'Luiz de Queiroz' College of Agriculture, University of Sao Paulo, Piracicaba, Brazil
| | - Bernadette Dg de Melo Franco
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
- Food Research Center (FoRC-CEPID), Sao Paulo, Brazil
| | - Daniele F Maffei
- Food Research Center (FoRC-CEPID), Sao Paulo, Brazil
- Department of Agri-food Industry, Food and Nutrition, 'Luiz de Queiroz' College of Agriculture, University of Sao Paulo, Piracicaba, Brazil
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20
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Prevalence and Virulence Gene Profiling of Listeria monocytogenes from Fish and Meat Samples from Aizawl, Mizoram. JOURNAL OF PURE AND APPLIED MICROBIOLOGY 2020. [DOI: 10.22207/jpam.14.2.33] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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21
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Santos T, Campos F, Padovani N, Dias M, Mendes M, Maffei D. Assessment of the microbiological quality and safety of minimally processed vegetables sold in Piracicaba, SP, Brazil. Lett Appl Microbiol 2020; 71:187-194. [DOI: 10.1111/lam.13305] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/23/2020] [Accepted: 04/27/2020] [Indexed: 12/16/2022]
Affiliation(s)
- T.S. Santos
- Department of Agri‐food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture University of Sao Paulo Piracicaba SP Brazil
| | - F.B. Campos
- Department of Agri‐food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture University of Sao Paulo Piracicaba SP Brazil
| | - N.F.A. Padovani
- Department of Agri‐food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture University of Sao Paulo Piracicaba SP Brazil
| | - M. Dias
- Dempster MS Lab Department of Chemical Engineering Polytechnic School University of Sao Paulo Sao Paulo SP Brazil
| | - M.A. Mendes
- Dempster MS Lab Department of Chemical Engineering Polytechnic School University of Sao Paulo Sao Paulo SP Brazil
| | - D.F. Maffei
- Department of Agri‐food Industry, Food and Nutrition, “Luiz de Queiroz” College of Agriculture University of Sao Paulo Piracicaba SP Brazil
- Food Research Center (FoRC‐CEPID) Sao Paulo SP Brazil
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22
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Alves RBT, Mousavi Khaneghah A, Antunes MA, Silva BS, Sant'Ana AS, Peña WEL, Andrade NJ. Inactivation modeling of microorganisms using organic chlorine and acetic acid solutions and estimation of growth kinetics of adhered Enterobacteriaceae to lettuce (
Lactuca sativa
L.). J Food Saf 2020. [DOI: 10.1111/jfs.12790] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Roberta B. T. Alves
- Department of Food TechnologyFederal University of Viçosa Viçosa Minas Gerais Brazil
| | - Amin Mousavi Khaneghah
- Department of Food Science, Faculty of Food EngineeringUniversity of Campinas Campinas São Paulo Brazil
| | - Maria A. Antunes
- Department of Food TechnologyFederal University of Viçosa Viçosa Minas Gerais Brazil
| | - Beatriz S. Silva
- Department of Food Science, Faculty of Food EngineeringUniversity of Campinas Campinas São Paulo Brazil
| | - Anderson S. Sant'Ana
- Department of Food Science, Faculty of Food EngineeringUniversity of Campinas Campinas São Paulo Brazil
| | - Wilmer E. L. Peña
- Department of Food TechnologyFederal University of Viçosa Viçosa Minas Gerais Brazil
| | - Nélio J. Andrade
- Department of Food TechnologyFederal University of Viçosa Viçosa Minas Gerais Brazil
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23
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Ramos B, Brandão TRS, Teixeira P, Silva CLM. Biopreservation approaches to reduce Listeria monocytogenes in fresh vegetables. Food Microbiol 2020; 85:103282. [PMID: 31500713 DOI: 10.1016/j.fm.2019.103282] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 07/21/2019] [Accepted: 07/26/2019] [Indexed: 12/21/2022]
Abstract
Two biopreservation approaches for fresh lettuce, rocket salad, parsley and spinach were studied. The potential of Pediococcus pentosaceus DT016, as a protective culture, to suppress Listeria monocytogenes in vegetables during storage was evaluated. The pathogen numbers in the vegetables inoculated with P. pentosaceus DT016 were significantly (p < 0.01) lower throughout the storage period and, at the last storage day, a minimum difference of 1.4 log CFU/g was reported when compared with the vegetables without the protective culture. Moreover, by using two levels of L. monocytogenes (about 6 and 4 log CFU/g), it was observed that the antagonist effect of P. pentosaceus was higher for the lower pathogen numbers. The second approach evaluated a pediocin DT016 solution to inactivate and control L. monocytogenes proliferation. The pathogen load was studied after washing with: water, chlorine and the pediocin solution and along storage at 4 °C. Comparing the various washing solutions, the vegetables washed with pediocin presented significantly (p < 0.01) lower pathogen numbers throughout storage, by a minimum of 3.2 and 2.7 log CFU/g, than in vegetables washed with water and chlorine, respectively. The proposed methodologies are promising alternatives to maintain the safety of fresh vegetables during extended storage at refrigeration temperature.
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Affiliation(s)
- Bárbara Ramos
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
| | - Teresa R S Brandão
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
| | - Paula Teixeira
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal
| | - Cristina L M Silva
- Universidade Católica Portuguesa, CBQF - Centro de Biotecnologia e Química Fina - Laboratório Associado, Escola Superior de Biotecnologia, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal.
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24
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Gholipour S, Nikaeen M, Farhadkhani M, Nikmanesh B. Survey of Listeria monocytogenes contamination of various environmental samples and associated health risks. Food Control 2020. [DOI: 10.1016/j.foodcont.2019.106843] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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25
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Osman KM, Kappell AD, Fox EM, Orabi A, Samir A. Prevalence, Pathogenicity, Virulence, Antibiotic Resistance, and Phylogenetic Analysis of Biofilm-Producing Listeria monocytogenes Isolated from Different Ecological Niches in Egypt: Food, Humans, Animals, and Environment. Pathogens 2019; 9:E5. [PMID: 31861483 PMCID: PMC7168649 DOI: 10.3390/pathogens9010005] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Revised: 12/07/2019] [Accepted: 12/09/2019] [Indexed: 02/07/2023] Open
Abstract
Serious outbreaks of foodborne disease have been caused by Listeria monocytogenes found in retail delicatessens and the severity of disease is significant, with high hospitalization and mortality rates. Little is understood about the formidable public health threat of L. monocytogenes in all four niches, humans, animals, food, and environment, in Egypt. This study analyzed the presence of L. monocytogenes collected from the four environmental niches and bioinformatics analysis was implemented to analyze and compare the data. PCR was used to detect virulence genes encoded by pathogenicity island (LIPI-1). prfA amino acid substation that causes constitutive expression of virulence was common in 77.7% of isolates. BLAST analysis did not match other isolates in the NCBI database, suggesting this may be a characteristic of the region associated with these isolates. A second group included the NH1 isolate originating in China, and BLAST analysis showed this prfA allele was shared with isolates from other global locations, such as Europe and North America. Identification of possible links and transmission pathways between the four niches helps to decrease the risk of disease in humans, to take more specific control measures in the context of disease prevention, to limit economic losses associated with food recalls, and highlights the need for treatment options.
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Affiliation(s)
- Kamelia M. Osman
- Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Cairo 12211, Egypt; (A.O.); (A.S.)
| | - Anthony D. Kappell
- Water Quality Center, Department of Civil, Construction and Environmental Engineering, Marquette University, Milwaukee, WI 53233, USA;
| | - Edward M. Fox
- Department of Applied Sciences, North Umbria University, Newcastle upon Tyne NE1 2SU, UK;
| | - Ahmed Orabi
- Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Cairo 12211, Egypt; (A.O.); (A.S.)
| | - Ahmed Samir
- Department of Microbiology, Faculty of Veterinary Medicine, Cairo University, Cairo 12211, Egypt; (A.O.); (A.S.)
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26
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Tandem mass tag-based quantitative proteomic analysis reveal the inhibition mechanism of thyme essential oil against flagellum of Listeria monocytogenes. Food Res Int 2019; 125:108508. [DOI: 10.1016/j.foodres.2019.108508] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 06/03/2019] [Accepted: 06/21/2019] [Indexed: 11/23/2022]
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27
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Oliveira NA, Bittencourt GM, Barancelli GV, Kamimura ES, Lee SHI, Oliveira CAF. Listeria monocytogenes in Brazilian foods: occurrence, risks to human health and their prevention. CURRENT RESEARCH IN NUTRITION AND FOOD SCIENCE 2019. [DOI: 10.12944/crnfsj.7.2.02] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Listeria monocytogenes is a foodborne pathogen which occurs mainly in ready-to-eat food products, especially in artisanal products manufactured from raw milk such as some types of cheese, meat products and leafy vegetables. L. monocytogenes requires special attention in the food industry because of its ability to survive under adverse conditions and form biofilms on different surfaces in food processing environments. The potential for product contamination by L. monocytogenes strains in the industrial environment emphasizes the importance of preventive measures in the food industry. This review presents an overview on the main characteristics, pathogenicity and occurrence data of L. monocytogenes in Brazilian foods. The main prevention measures to avoid contamination by L. monocytogenes in foods are also highlighted, especially the adoption of quality assurance programs by the food industry.
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Affiliation(s)
- Naila Albertina Oliveira
- Department of Food Engineering, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil
| | - Gabriela Marques Bittencourt
- Department of Agroindustry, Food and Nutrition, College of Agriculture “Luiz de Queiroz”, University of São Paulo, Piracicaba, Brazil
| | - Giovana Verginia Barancelli
- Department of Agroindustry, Food and Nutrition, College of Agriculture “Luiz de Queiroz”, University of São Paulo, Piracicaba, Brazil
| | - Eliana Setsuko Kamimura
- Department of Food Engineering, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil
| | - Sarah Hwa In Lee
- Department of Food Engineering, School of Animal Science and Food Engineering, University of São Paulo, Pirassununga, Brazil
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28
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Xylia P, Botsaris G, Chrysargyris A, Skandamis P, Tzortzakis N. Variation of microbial load and biochemical activity of ready-to-eat salads in Cyprus as affected by vegetable type, season, and producer. Food Microbiol 2019; 83:200-210. [PMID: 31202414 DOI: 10.1016/j.fm.2019.05.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 04/15/2019] [Accepted: 05/24/2019] [Indexed: 10/26/2022]
Abstract
Fresh vegetables are important components of an everyday balanced diet making ready to-eat-salads (RTE) a commodity widely consumed. However, in the past few years these products have been linked with outbreaks of salmonellosis and listeriosis; thus the continuous investigation of their safety is an essential requirement. A total of 216 samples of ready-to-eat salads from the Cypriot market were analysed to determine the microbiological quality and safety, along with physicochemical attributes of the salads and identify possible correlations between them. The samples were randomly collected from four retail outlets and correspond to five different salad producing companies. Furthermore, the effects of season, salad producer and type of salad and/or their interactions with the tested parameters were investigated. The results revealed that the higher microbial load among seasons was observed in samples collected during spring. Escherichia coli was found in 11.57% of samples and 2.62% of isolates were found to be able to produce extended spectrum β-lactamase (ESBL). All samples were found negative for Salmonella enterica, whereas Listeria monocytogenes was present in 3.70% of samples. Higher levels of spoilage bacteria (lactic acid bacteria and Pseudomonas spp.) were detected during winter and spring. Additionally, the %CO2 production was affected by the type of salad, while the interaction between producer and type of salad, affected total phenolic content and antioxidant activity of samples. A positive correlation of phenols and antioxidants with the presence of Staphylococcus spp., Pseudomonas spp., E. coli and Bacillus cereus was observed, suggesting that excessive handling increases microbial load and plant stress.
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Affiliation(s)
- Panayiota Xylia
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Limassol, Cyprus
| | - George Botsaris
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Limassol, Cyprus
| | - Antonios Chrysargyris
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Limassol, Cyprus
| | - Panagiotis Skandamis
- Faculty of Food Science & Technology, Agricultural University of Athens, Athens, Greece
| | - Nikos Tzortzakis
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Limassol, Cyprus.
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Matle I, Mbatha KR, Lentsoane O, Magwedere K, Morey L, Madoroba E. Occurrence, serotypes, and characteristics of
Listeria monocytogenes
in meat and meat products in South Africa between 2014 and 2016. J Food Saf 2019. [DOI: 10.1111/jfs.12629] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Itumeleng Matle
- Bacteriology DivisionARC‐Onderstepoort Veterinary Research Pretoria South Africa
- Department of Agriculture and Animal HealthScience Campus, University of South Africa Florida South Africa
| | - Khanyisile R. Mbatha
- Department of Agriculture and Animal HealthScience Campus, University of South Africa Florida South Africa
| | - Olivia Lentsoane
- Bacteriology DivisionARC‐Onderstepoort Veterinary Research Pretoria South Africa
| | - Kudakwashe Magwedere
- Department of AgricultureForestry and Fisheries, Directorate of Veterinary Public Health Pretoria South Africa
| | - Liesl Morey
- Biometry DivisionAgricultural Research Council Corporate Office Pretoria South Africa
| | - Evelyn Madoroba
- Department of Agriculture and Animal HealthScience Campus, University of South Africa Florida South Africa
- Department of Biochemistry and Microbiology, Faculty of Science and AgricultureUniversity of Zululand KwaDlangezwa South Africa
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30
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Huvarova V, Kralik P, Vasickova P, Kubankova M, Verbikova V, Slany M, Babak V, Moravkova M. Tracing of Selected Viral, Bacterial, and Parasitic Agents on Vegetables and Herbs Originating from Farms and Markets. J Food Sci 2018; 83:3044-3053. [PMID: 30462845 DOI: 10.1111/1750-3841.14385] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/11/2018] [Accepted: 10/08/2018] [Indexed: 01/24/2023]
Abstract
Fresh vegetables and herbs are usually prepared and eaten raw without cooking or heating, which leads to a high risk of foodborne infection. The aim of the present study was to assess the contamination of raw vegetables, herbs, and the environment of food chains. Vegetable and herb samples originating both from the Czech Republic as well as from other countries were examined. The work was focused on the detection of commonly found, but also less frequently monitored foodborne pathogens, including viruses of the genus Norovirus (NoVs), hepatitis A virus (HAV), Listeria monocytogenes and Cronobacter spp. bacteria, and the parasites Cryptosporidium spp. and Giardia intestinalis. All samples were analyzed using individual RT-qPCR/qPCR assays; bacterial pathogens were also simultaneously detected using culture methods. The prevalence of the studied microorganisms in 623 samples ranged from 0.6% to 44.3% for individual pathogens. None of the samples were positive for the presence of HAV. Analysis of 157 environmental samples from 12 farms revealed the presence of NoVs in the environment of four farms. NoVs were detected in water samples as well as on the hands and gloves of workers. Escherichia coli was detected in all farms in the environmental samples and in eight farms in water samples. However, no sample of water exceeded the level of 100 CFU/mL for E. coli. None of the samples of water were positive for the presence of the studied parasites. Vegetables and herbs available from Czech markets and farms may pose a certain risk of foodborne disease, especially in the case of NoVs and parasites. PRACTICAL APPLICATION: This study provides valuable information on the microbiological quality of raw vegetables and herbs available from Czech markets and farms. Good hygienic practices aimed at reducing the incidence of pathogenic agents on fresh produce should not be neglected. Emphasis should be placed on the control of irrigation water, especially with respect to norovirus contamination. It is appropriate to combine culture methods and qPCR methods for the detection of bacterial agents.
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Affiliation(s)
- Veronika Huvarova
- Dept. of Food and Feed Safety, Veterinary Research Inst., Hudcova 296/70, 621 00, Brno, Czech Republic.,Dept. of Experimental Biology, Faculty of Science, Masaryk Univ. Brno, Kamenice 753/5, 625 00, Brno Bohunice, Czech Republic
| | - Petr Kralik
- Dept. of Food and Feed Safety, Veterinary Research Inst., Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Petra Vasickova
- Dept. of Food and Feed Safety, Veterinary Research Inst., Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Monika Kubankova
- Dept. of Food and Feed Safety, Veterinary Research Inst., Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Veronika Verbikova
- Dept. of Food and Feed Safety, Veterinary Research Inst., Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Michal Slany
- Dept. of Food and Feed Safety, Veterinary Research Inst., Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Vladimir Babak
- Dept. of Food and Feed Safety, Veterinary Research Inst., Hudcova 296/70, 621 00, Brno, Czech Republic
| | - Monika Moravkova
- Dept. of Food and Feed Safety, Veterinary Research Inst., Hudcova 296/70, 621 00, Brno, Czech Republic
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31
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Pereira JG, Soares VM, Tadielo LE, dos Santos EAR, Lopes GV, da Cruz Payão Pellegrini D, Duval EH, da Silva WP. Foods introduced into Brazil through the border with Argentina and Uruguay: Pathogen detection and evaluation of hygienic-sanitary quality. Int J Food Microbiol 2018; 283:22-27. [DOI: 10.1016/j.ijfoodmicro.2018.06.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 06/04/2018] [Accepted: 06/16/2018] [Indexed: 12/15/2022]
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32
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(EFSA) EFSA, Allende A, Barre L, Jacxsens L, Liebana E, Messens W, Sarno E, da Silva Felicio MT. Urgent scientific and technical assistance to provide recommendations for sampling and testing in the processing plants of frozen vegetables aiming at detecting Listeria monocytogenes. ACTA ACUST UNITED AC 2018. [DOI: 10.2903/sp.efsa.2018.en-1445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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33
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Prevalence and Characteristics of Listeria monocytogenes Isolates in Raw Milk, Heated Milk and Nunu, a Spontaneously Fermented Milk Beverage, in Ghana. BEVERAGES 2018. [DOI: 10.3390/beverages4020040] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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34
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Mir SA, Shah MA, Mir MM, Dar B, Greiner R, Roohinejad S. Microbiological contamination of ready-to-eat vegetable salads in developing countries and potential solutions in the supply chain to control microbial pathogens. Food Control 2018. [DOI: 10.1016/j.foodcont.2017.10.006] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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35
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Cabrera-Díaz E, Martínez-Chávez L, Sánchez-Camarena J, Muñiz-Flores JA, Castillo A, Gutiérrez-González P, Arvizu-Medrano SM, González-Aguilar DG, Martínez-Gonzáles NE. Simultaneous and individual quantitative estimation of Salmonella, Shigella and Listeria monocytogenes on inoculated Roma tomatoes (Lycopersicon esculentum var. Pyriforme) and Serrano peppers (Capsicum annuum) using an MPN technique. Food Microbiol 2018. [PMID: 29526213 DOI: 10.1016/j.fm.2018.02.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Simultaneous and individual enumeration of Salmonella, Shigella and Listeria monocytogenes was compared on inoculated Roma tomatoes and Serrano peppers using an Most Probable Number (MPN) technique. Samples consisting of tomatoes (4 units) or peppers (8 units) were individually inoculated with a cocktail of three strains of Salmonella, Shigella or L. monocytogenes, or by simultaneous inoculation of three strains of each pathogen, at low (1.2-1.7 log CFU/sample) and high (2.2-2.7 log CFU/sample) inocula. Samples were analyzed by an MPN technique using universal pre-enrichment (UP) broth at 35 °C for 24 ± 2 h. The UP tubes from each MPN series were transferred to enrichment and plating media following adequate conventional methods for isolating each pathogen. Data were analyzed using multifactorial analysis of variance (p < 0.05) and LSD multiple rang test. There were differences (p < 0.05) in recovery of simultaneous and individual bacteria inoculated (individual > simultaneous), type of bacteria (Salmonella > Shigella and L. monocytogenes), type of sample (UP broth > pepper and tomato), and inoculum level (high > low). The MPN technique was effective for Salmonella on both commodities. Shigella counts were higher on tomatoes compared to peppers, (p < 0.05), and for L. monocytogenes on peppers (p < 0.05).
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Affiliation(s)
- E Cabrera-Díaz
- Universidad de Guadalajara, Centro Universitario de Ciencias Biológicas y Agropecuarias, Departamento de Salud Pública, Camino Ramón Padilla Sánchez 2100, Zapopan, Jalisco, 45200, Mexico
| | - L Martínez-Chávez
- Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierías, Departamentos de Farmacobiología y Matemáticas, Marcelino García Barragán 1451, Guadalajara, Jalisco, 44430, Mexico
| | - J Sánchez-Camarena
- Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierías, Departamentos de Farmacobiología y Matemáticas, Marcelino García Barragán 1451, Guadalajara, Jalisco, 44430, Mexico
| | - J A Muñiz-Flores
- Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierías, Departamentos de Farmacobiología y Matemáticas, Marcelino García Barragán 1451, Guadalajara, Jalisco, 44430, Mexico
| | - A Castillo
- Texas A&M University, Department of Animal Science, 2471 TAMU, College Station, TX, 77845, USA
| | - P Gutiérrez-González
- Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierías, Departamentos de Farmacobiología y Matemáticas, Marcelino García Barragán 1451, Guadalajara, Jalisco, 44430, Mexico
| | - S M Arvizu-Medrano
- Universidad Autónoma de Querétaro, Facultad de Química, Cerro de las Campanas S/N, Querétaro, 76010, Mexico
| | - D G González-Aguilar
- Universidad de Guadalajara, Centro Universitario de Ciencias Biológicas y Agropecuarias, Departamento de Salud Pública, Camino Ramón Padilla Sánchez 2100, Zapopan, Jalisco, 45200, Mexico
| | - N E Martínez-Gonzáles
- Universidad de Guadalajara, Centro Universitario de Ciencias Exactas e Ingenierías, Departamentos de Farmacobiología y Matemáticas, Marcelino García Barragán 1451, Guadalajara, Jalisco, 44430, Mexico.
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36
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Iglesias MA, Kroning IS, Decol LT, de Melo Franco BDG, Silva WPD. Occurrence and phenotypic and molecular characterization of Listeria monocytogenes and Salmonella spp. in slaughterhouses in southern Brazil. Food Res Int 2017; 100:96-101. [DOI: 10.1016/j.foodres.2017.06.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Revised: 06/07/2017] [Accepted: 06/10/2017] [Indexed: 11/26/2022]
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37
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Wilson MD, Stanley RA, Eyles A, Ross T. Innovative processes and technologies for modified atmosphere packaging of fresh and fresh-cut fruits and vegetables. Crit Rev Food Sci Nutr 2017; 59:411-422. [DOI: 10.1080/10408398.2017.1375892] [Citation(s) in RCA: 55] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Matthew Deas Wilson
- ARC Training Centre for Innovative Horticultural Products, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, Australia
| | - Roger A Stanley
- ARC Training Centre for Innovative Horticultural Products, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, Australia
- Centre for Food Innovation, University of Tasmania, Launceston, Australia
| | - Alieta Eyles
- ARC Training Centre for Innovative Horticultural Products, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, Australia
| | - Tom Ross
- ARC Training Centre for Innovative Horticultural Products, Tasmanian Institute of Agriculture, University of Tasmania, Launceston, Australia
- Food Safety Centre, School of Land and Food, University of Tasmania, Hobart, Australia
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38
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Feng K, Hu W, Jiang A, Saren G, Xu Y, Ji Y, Shao W. Growth ofSalmonellaspp. andEscherichia coliO157:H7 on Fresh-Cut Fruits Stored at Different Temperatures. Foodborne Pathog Dis 2017; 14:510-517. [DOI: 10.1089/fpd.2016.2255] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Affiliation(s)
- Ke Feng
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
- College of Life Science, Dalian Nationalities University, Dalian, China
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, China
| | - Wenzhong Hu
- College of Life Science, Dalian Nationalities University, Dalian, China
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, China
| | - Aili Jiang
- College of Life Science, Dalian Nationalities University, Dalian, China
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, China
| | - Gaowa Saren
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
- College of Life Science, Dalian Nationalities University, Dalian, China
- Key Laboratory of Biotechnology and Bioresources Utilization, Ministry of Education, Dalian, China
| | - Yongping Xu
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - Yaru Ji
- School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
- College of Life Science, Dalian Nationalities University, Dalian, China
| | - Wenjun Shao
- College of Life Science, Dalian Nationalities University, Dalian, China
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39
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Camargo AC, Woodward JJ, Call DR, Nero LA. Listeria monocytogenes in Food-Processing Facilities, Food Contamination, and Human Listeriosis: The Brazilian Scenario. Foodborne Pathog Dis 2017; 14:623-636. [PMID: 28767285 DOI: 10.1089/fpd.2016.2274] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Listeria monocytogenes is a foodborne pathogen that contaminates food-processing environments and persists within biofilms on equipment, utensils, floors, and drains, ultimately reaching final products by cross-contamination. This pathogen grows even under high salt conditions or refrigeration temperatures, remaining viable in various food products until the end of their shelf life. While the estimated incidence of listeriosis is lower than other enteric illnesses, infections caused by L. monocytogenes are more likely to lead to hospitalizations and fatalities. Despite the description of L. monocytogenes occurrence in Brazilian food-processing facilities and foods, there is a lack of consistent data regarding listeriosis cases and outbreaks directly associated with food consumption. Listeriosis requires rapid treatment with antibiotics and most drugs suitable for Gram-positive bacteria are effective against L. monocytogenes. Only a minority of clinical antibiotic-resistant L. monocytogenes strains have been described so far; whereas many strains recovered from food-processing facilities and foods exhibited resistance to antimicrobials not suitable against listeriosis. L. monocytogenes control in food industries is a challenge, demanding proper cleaning and application of sanitization procedures to eliminate this foodborne pathogen from the food-processing environment and ensure food safety. This review focuses on presenting the L. monocytogenes distribution in food-processing environment, food contamination, and control in the food industry, as well as the consequences of listeriosis to human health, providing a comparison of the current Brazilian situation with the international scenario.
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Affiliation(s)
- Anderson Carlos Camargo
- 1 Departamento de Veterinária, Universidade Federal de Viçosa , Viçosa, Minas Gerais, Brazil
| | | | - Douglas Ruben Call
- 3 Paul G. Allen School for Global Animal Health, Washington State University , Pullman, Washington
| | - Luís Augusto Nero
- 1 Departamento de Veterinária, Universidade Federal de Viçosa , Viçosa, Minas Gerais, Brazil
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40
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Effect of intervention strategies on the risk of infection from Listeria monocytogenes due to consumption of fresh baby spinach leaves: A quantitative approach. Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2017.02.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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41
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42
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Modeling the fate of Listeria monocytogenes and Salmonella enterica in the pulp and on the outer rind of Canary melons (Cucumis melo (Indorus Group)). Lebensm Wiss Technol 2017. [DOI: 10.1016/j.lwt.2016.11.059] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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43
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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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44
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Almeida RMD, Barbosa AV, Lisbôa RDC, Santos AFDM, Hofer E, Vallim DC, Hofer CB. Virulence genes and genetic relationship of L. monocytogenes isolated from human and food sources in Brazil. Braz J Infect Dis 2017; 21:282-289. [PMID: 28274807 PMCID: PMC9427587 DOI: 10.1016/j.bjid.2017.01.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 01/23/2017] [Accepted: 01/25/2017] [Indexed: 11/07/2022] Open
Abstract
The herein presented assay provided a bacteriological and molecular characterization of 100 samples of L. monocytogenes isolated from human (43) and food (57) sources, from several regions of Brazil, and collected between 1975 and 2013. Antigenic characterization defined 49% of serotype 4b samples, followed by 28% of serotype 1/2b, 14% of serotype 1/2c, 8% of serotype 1/2a, and 1% of serotype 3b. Both type of samples from human and food origin express the same serotype distribution. Multiplex PCR analysis showed 13 strains of type 4b with the amplification profile 4b-VI (Variant I). Virulence genes hly, inlA, inlB, inlC, inlJ, actA, plcA, and prfA were detected in all samples, highlighting a deletion of 105pb on the actA gene in 23% of serotype 4b samples. Macrorestriction profile with ApaI at PFGE showed 55 pulsotypes, with the occurrence of the same pulsotype in hospitalized patients in São Paulo in 1992 and 1997, and two other highly related pulsotypes in patients hospitalized in Rio de Janeiro in 2008. Recognized pulsotypes in listeriosis cases have also been detected in food. Thus, the prevalence of a serotype and the persistence of certain pulsotypes herald future problems.
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Affiliation(s)
- Rosana Macedo de Almeida
- Instituto Oswaldo Cruz (Fiocruz), Laboratório de Zoonoses Bacterianas, Rio de Janeiro, RJ, Brazil; Universidade Federal do Rio de Janeiro (UFRJ), Faculdade de Medicina, Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Rio de Janeiro, RJ, Brazil.
| | - André Victor Barbosa
- Instituto Oswaldo Cruz (Fiocruz), Laboratório de Zoonoses Bacterianas, Rio de Janeiro, RJ, Brazil; Universidade Federal Fluminense, Instituto Biomédico, Laboratório de Enteropatógenos Bacterianos, Microbiologia Veterinária e de Alimentos, Niterói, RJ, Brazil
| | - Rodrigo de Castro Lisbôa
- Instituto Oswaldo Cruz (Fiocruz), Laboratório de Zoonoses Bacterianas, Rio de Janeiro, RJ, Brazil
| | | | - Ernesto Hofer
- Instituto Oswaldo Cruz (Fiocruz), Laboratório de Zoonoses Bacterianas, Rio de Janeiro, RJ, Brazil
| | - Deyse Christina Vallim
- Instituto Oswaldo Cruz (Fiocruz), Laboratório de Zoonoses Bacterianas, Rio de Janeiro, RJ, Brazil
| | - Cristina Barroso Hofer
- Universidade Federal do Rio de Janeiro (UFRJ), Faculdade de Medicina, Programa de Pós-Graduação em Doenças Infecciosas e Parasitárias, Rio de Janeiro, RJ, Brazil
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45
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Sibomana MS, Ziena LW, Schmidt S, Workneh TS. Influence of Transportation Conditions and Postharvest Disinfection Treatments on Microbiological Quality of Fresh Market Tomatoes (cv. Nemo-Netta) in a South African Supply Chain. J Food Prot 2017; 80:345-354. [PMID: 28221979 DOI: 10.4315/0362-028x.jfp-16-229] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Postharvest microbial spoilage due to suboptimal transportation and packaging conditions is a key concern for the South African tomato industry. This study investigated the influence of washing with tap water or aqueous disinfectant solutions (chlorinated and anolyte water) on the microbiological quality of tomatoes during storage after transportation in nonrefrigerated trucks along two supply routes when packaged in crates and boxes. Route 1 was 1,093 km from field to storage site, while route 2 was 1,057 km. During transport, the temperature in the trucks fluctuated between 16 and 28°C and the relative humidity between 25 and 94% for route 1, while for route 2, the temperature was between 16 and 30°C and the relative humidity between 28 and 71%. Tomatoes at the pink maturity stage were sampled, treated, and stored for 28 days (11°C). The tomato firmness before treatment was 24.8 N (box samples) and 17.4 N (crate samples) for route 1, whereas it was 22.1 N (box samples) and 20.2 N (crate samples) for route 2. Temperature fluctuation during transportation led to water condensation on tomato surfaces. Tomatoes treated with anolyte water showed the lowest microbial surface burden during storage, with mean aerobic plate counts (APC) of 2.9 log CFU/cm2, coliform counts (CC) of 1.1 log CFU/cm2, and fungal counts (FC) of 2.3 log CFU/cm2. Overall, of the total APC recorded during storage, anolyte-treated samples contributed 9% while chlorinated water-treated samples contributed 30%. Of the total CC, anolyte samples presented 3% while chlorinated water samples made up 12%, and of the total recorded FC, anolyte samples contributed 7% while chlorinated water samples made up 22%. Scanning electron microscopy imaging showed surface cracks, which enable microbial colonization in crate-transported tomatoes. A combination of anolyte treatment and box packaging during transport resulted in the best microbiological quality during storage. The findings of this investigation provide motivation for the adoption of anolyte water as a postharvest disinfection treatment in the tomato industry.
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Affiliation(s)
- M S Sibomana
- Bioresources Engineering, School of Engineering, University of KwaZulu-Natal, Private Bag X0l, Pietermaritzburg, Scottsville 3209, South Africa
| | - L W Ziena
- Microbiology, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Private Bag X0l, Pietermaritzburg, Scottsville 3209, South Africa
| | - S Schmidt
- Microbiology, School of Life Sciences, College of Agriculture, Engineering and Science, University of KwaZulu-Natal, Private Bag X0l, Pietermaritzburg, Scottsville 3209, South Africa
| | - T S Workneh
- Bioresources Engineering, School of Engineering, University of KwaZulu-Natal, Private Bag X0l, Pietermaritzburg, Scottsville 3209, South Africa
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46
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Microbiology of organic and conventionally grown fresh produce. Braz J Microbiol 2016; 47 Suppl 1:99-105. [PMID: 27825766 PMCID: PMC5156503 DOI: 10.1016/j.bjm.2016.10.006] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 10/05/2016] [Indexed: 11/23/2022] Open
Abstract
Fresh produce is a generalized term for a group of farm-produced crops, including fruits and vegetables. Organic agriculture has been on the rise and attracting the attention of the food production sector, since it uses eco-agricultural principles that are ostensibly environmentally-friendly and provides products potentially free from the residues of agrochemicals. Organic farming practices such as the use of animal manure can however increase the risk of contamination by enteric pathogenic microorganisms and may consequently pose health risks. A number of scientific studies conducted in different countries have compared the microbiological quality of produce samples from organic and conventional production and results are contradictory. While some have reported greater microbial counts in fresh produce from organic production, other studies do not. This manuscript provides a brief review of the current knowledge and summarizes data on the occurrence of pathogenic microorganisms in vegetables from organic production.
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47
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Camargo AC, Woodward JJ, Nero LA. The Continuous Challenge of Characterizing the Foodborne Pathogen Listeria monocytogenes. Foodborne Pathog Dis 2016; 13:405-16. [PMID: 27120361 DOI: 10.1089/fpd.2015.2115] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Listeria monocytogenes is an important foodborne pathogen commonly isolated from food processing environments and food products. This organism can multiply at refrigeration temperatures, form biofilms on different materials and under various conditions, resist a range of environmental stresses, and contaminate food products by cross-contamination. L. monocytogenes is recognized as the causative agent of listeriosis, a serious disease that affects mainly individuals from high-risk groups, such as pregnant women, newborns, the elderly, and immunocompromised individuals. Listeriosis can be considered a disease that has emerged along with changing eating habits and large-scale industrial food processing. This disease causes losses of billions of dollars every year with recalls of contaminated foods and patient medical treatment expenses. In addition to the immune status of the host and the infecting dose, the virulence potential of each strain is crucial for the development of disease symptoms. While many isolates are naturally virulent, other isolates are avirulent and unable to cause disease; this may vary according to the presence of molecular determinants associated with virulence. In the last decade, the characterization of genetic profiles through the use of molecular methods has helped track and demonstrate the genetic diversity among L. monocytogenes isolates obtained from various sources. The purposes of this review were to summarize the main methods used for isolation, identification, and typing of L. monocytogenes and also describe its most relevant virulence characteristics.
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Affiliation(s)
- Anderson Carlos Camargo
- 1 Departamento de Veterinária, Universidade Federal de Viçosa , Viçosa, Minas Gerais, Brazil
| | | | - Luís Augusto Nero
- 1 Departamento de Veterinária, Universidade Federal de Viçosa , Viçosa, Minas Gerais, Brazil
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48
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de Vasconcelos Byrne V, Hofer E, Vallim DC, de Castro Almeida RC. Occurrence and antimicrobial resistance patterns of Listeria monocytogenes isolated from vegetables. Braz J Microbiol 2016; 47:438-43. [PMID: 26991279 PMCID: PMC4874581 DOI: 10.1016/j.bjm.2015.11.033] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Accepted: 11/12/2015] [Indexed: 02/05/2023] Open
Abstract
Although the consumption of fresh and minimally processed vegetables is considered healthy, outbreaks related to the contamination of these products are frequently reported. Among the food-borne pathogens that contaminate vegetables is Listeria monocytogenes, a ubiquitous organism that exhibits the ability to survive and multiply at refrigerated temperatures. This study aimed to evaluate the occurrence of L. monocytogenes in vegetables as well as the antimicrobial resistance of isolates. The results showed that 3.03% of samples were contaminated with L. monocytogenes, comprising 2.22% of raw vegetables and 5.56% of ready-to-eat vegetables. Multiplex PCR confirmed the virulence potential of the isolates. Antimicrobial resistance profiling showed that 50% of the isolates were susceptible to the antibiotics used. The resistance of one isolate to penicillin G, a commonly employed therapeutic agent, and the presence of serotype 4b, a serotype commonly associated with food-borne outbreaks, could be potential health hazards for consumers.
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Affiliation(s)
| | - Ernesto Hofer
- Laboratory of Bacterial Zoonoses, Oswaldo Cruz Institute, Pavilhão Rocha Lima, Rio de Janeiro, RJ, Brazil
| | - Deyse Christina Vallim
- Laboratory of Bacterial Zoonoses, Oswaldo Cruz Institute, Pavilhão Rocha Lima, Rio de Janeiro, RJ, Brazil
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49
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Granato D, Prado-Silva LD, Alvarenga VO, Zielinski AA, Bataglion GA, Morais DRD, Eberlin MN, Sant'Ana ADS. Characterization of binary and ternary mixtures of green, white and black tea extracts by electrospray ionization mass spectrometry and modeling of their in vitro antibacterial activity. Lebensm Wiss Technol 2016. [DOI: 10.1016/j.lwt.2015.08.037] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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50
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A sensitive impedance biosensor based on immunomagnetic separation and urease catalysis for rapid detection of Listeria monocytogenes using an immobilization-free interdigitated array microelectrode. Biosens Bioelectron 2015; 74:504-11. [DOI: 10.1016/j.bios.2015.06.007] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2015] [Revised: 05/27/2015] [Accepted: 06/03/2015] [Indexed: 01/07/2023]
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