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Cardamone C, Castello A, Oliveri G, Costa A, Sciortino S, Nia Y, Hennekinne JA, Romano A, Zuccon F, Decastelli L. Staphylococcal food poisoning outbreaks occurred in Sicily (Italy) from 2009 to 2016. Ital J Food Saf 2024; 13:11667. [PMID: 38807740 PMCID: PMC11128976 DOI: 10.4081/ijfs.2024.11667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 12/11/2023] [Indexed: 05/30/2024] Open
Abstract
Notification of foodborne outbreaks has been mandatory in Europe since 2005, and surveillance is carried out along the entire food chain. Here we report the results obtained from laboratory investigations about four cases of foodborne outbreaks that occurred in Sicily between 2009 and 2016, deemed to be related to staphylococcal enterotoxins (SEs) and coagulase-positive Staphylococci (CPS) by the Local Public Health Authority. Primosale cheese samples were processed by culture methods for enumeration of CPS and immunoenzymatic assays for detection and differentiation of the SEs possibly contained in food samples. In all cases, the mistrusted foods were found to be contaminated by CPS at bacterial loads between 5 and 8 log CFU/g and contained SE type C (SEC). The reported data confirm the risk of staphylococcal food poisoning associated with the consumption of raw milk cheese. SEC is the most commonly occurring SE in goat milk and dairy products and the most represented enterotoxin in Sicilian dairy products. Our results highlighted the need for improving the current monitoring efficiency and implementing the available laboratory methods to collect more faithful epidemiological data on the current prevalence of staphylococcal toxins in the food chain, including SEs currently not detectable by validated analytical methods.
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Affiliation(s)
- Cinzia Cardamone
- Food Microbiology Area, Experimental Zooprophylactic Institute of Sicily, Palermo, Italy
| | - Annamaria Castello
- Food Microbiology Area, Experimental Zooprophylactic Institute of Sicily, Palermo, Italy
| | - Giuseppa Oliveri
- Food Microbiology Area, Experimental Zooprophylactic Institute of Sicily, Palermo, Italy
| | - Antonella Costa
- Food Microbiology Area, Experimental Zooprophylactic Institute of Sicily, Palermo, Italy
| | - Sonia Sciortino
- Food Microbiology Area, Experimental Zooprophylactic Institute of Sicily, Palermo, Italy
| | - Yacine Nia
- Laboratory for Food Safety, French Agency for Food, Environmental and Occupational Health and Safety, Paris-Est University, Maisons-Alfort, France
| | - Jacques Antoine Hennekinne
- Laboratory for Food Safety, French Agency for Food, Environmental and Occupational Health and Safety, Paris-Est University, Maisons-Alfort, France
| | - Angelo Romano
- National Reference Laboratory for Coagulase Positive Staphylococci including S. aureus, Experimental Zooprophylactic Institute of Piemonte, Liguria and Valle d’Aosta, Torino, Italy
| | - Fabio Zuccon
- National Reference Laboratory for Coagulase Positive Staphylococci including S. aureus, Experimental Zooprophylactic Institute of Piemonte, Liguria and Valle d’Aosta, Torino, Italy
| | - Lucia Decastelli
- National Reference Laboratory for Coagulase Positive Staphylococci including S. aureus, Experimental Zooprophylactic Institute of Piemonte, Liguria and Valle d’Aosta, Torino, Italy
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Gajewska J, Zakrzewski A, Chajęcka-Wierzchowska W, Zadernowska A. Meta-analysis of the global occurrence of S. aureus in raw cattle milk and artisanal cheeses. Food Control 2023. [DOI: 10.1016/j.foodcont.2023.109603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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3
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Ramos GLPA, Nascimento JS, Margalho LP, Cruz AG, Sant'Ana AS. Quantitative risk assessment for type A staphylococcal enterotoxin poisoning due to consumption of Minas Frescal cheese in Brazil. INT J DAIRY TECHNOL 2022. [DOI: 10.1111/1471-0307.12924] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Gustavo Luis P A Ramos
- Faculty of Veterinary Medicine Fluminense Federal University (UFF) Avenida Almirante Ary Parreiras, 507 Niterói Rio de Janeiro 24230321 Brazil
- Food Department Federal Institute of Education, Science, and Technology of Rio de Janeiro (IFRJ) Rua Senador Furtado, 121 Rio de Janeiro Rio de Janeiro 20270021 Brazil
| | - Janaína S Nascimento
- Food Department Federal Institute of Education, Science, and Technology of Rio de Janeiro (IFRJ) Rua Senador Furtado, 121 Rio de Janeiro Rio de Janeiro 20270021 Brazil
| | - Larissa P Margalho
- Department of Food Science and Nutrition, Faculty of Food Engineering University of Campinas Rua Monteiro Lobato, 80 Campinas São Paulo 13083862 Brazil
| | - Adriano G Cruz
- Food Department Federal Institute of Education, Science, and Technology of Rio de Janeiro (IFRJ) Rua Senador Furtado, 121 Rio de Janeiro Rio de Janeiro 20270021 Brazil
| | - Anderson S Sant'Ana
- Department of Food Science and Nutrition, Faculty of Food Engineering University of Campinas Rua Monteiro Lobato, 80 Campinas São Paulo 13083862 Brazil
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4
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Quantitative risk assessment of staphylococcal enterotoxin A (SEA) in pork in metropolitan Bangkok, Thailand. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Joshi A, Bhardwaj D, Kaushik A, Juneja VK, Taneja P, Thakur S, Kumra Taneja N. Advances in multi-omics based quantitative microbial risk assessment in the dairy sector: A semi-systematic review. Food Res Int 2022; 156:111323. [PMID: 35651076 DOI: 10.1016/j.foodres.2022.111323] [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: 11/09/2021] [Revised: 04/26/2022] [Accepted: 04/28/2022] [Indexed: 11/16/2022]
Abstract
With the increasing consumption of packaged and ready-to-eat food products, the risk of foodborne illness has drastically increased and so has the dire need for proper management. The conventional Microbial Risk Assessment (MRA) investigations require prior knowledge of process flow, exposure, and hazard assessment throughout the supply chain. These data are often generated using conventional microbiological approaches based either on shelf-life studies or specific spoilage organisms (SSOs), frequently overlooking crucial information such as antimicrobial resistance (AMR), biofilm formation, virulence factors and other physiological variations coupled with bio-chemical characteristics of food matrix. Additionally, the microbial risks in food are diverse and heterogenous, that might be an outcome of growth and activity of multiple microbial populations rather than a single species contamination. The uncertainty on the microbial source, time as well as point of entry into the food supply chain poses a constraint to the efficiency of preventive approaches and conventional MRA. In the last few decades, significant breakthroughs in molecular methods and continuously progressing bioinformatics tools have opened up a new horizon for risk analysis-based approaches in food safety. Real time polymerase chain reaction (qPCR) and kit-based assays provide better accuracy and precision with shorter processing time. Despite these improvements, the effect of complex food matrix on growth environment and recovery of pathogen is a persistent problem for risk assessors. The dairy industry is highly impacted by spoilage and pathogenic microorganisms. Therefore, this review discusses the evolution and recent advances in MRAmethodologies equipped with predictive interventions and "multi-omics" approach for robust MRA specifically targeting dairy products. It also highlights the limiting gap area and the opportunity for improvement in this field to ensure precision food safety.
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Affiliation(s)
- Akanksha Joshi
- Dept. of Basic and Applied Sciences, National Institute of Food Technology Entrepreneurship and Management, Haryana 131028, India
| | - Dinesh Bhardwaj
- Dept. of Basic and Applied Sciences, National Institute of Food Technology Entrepreneurship and Management, Haryana 131028, India
| | - Abhishek Kaushik
- Dept. of Basic and Applied Sciences, National Institute of Food Technology Entrepreneurship and Management, Haryana 131028, India
| | | | - Pankaj Taneja
- Department of Biotechnology, Sharda University, Greater Noida, Uttar Pradesh, India
| | - Sheetal Thakur
- Department of Food Science and Technology, MMICT & BM (HM), MMDU, Mullana, Ambala, Haryana, India
| | - Neetu Kumra Taneja
- Dept. of Basic and Applied Sciences, National Institute of Food Technology Entrepreneurship and Management, Haryana 131028, India; Center for Advance Translational Research in Food Nanobiotechnology (CATR-FNB), National Institute of Food Technology Entrepreneurship and Management, Haryana 131028, India.
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6
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Carneiro Aguiar RA, Ferreira FA, Dias RS, Nero LA, Miotto M, Verruck S, De Marco I, De Dea Lindner J. Graduate Student Literature Review: Enterotoxigenic potential and antimicrobial resistance of staphylococci from Brazilian artisanal raw milk cheeses. J Dairy Sci 2022; 105:5685-5699. [DOI: 10.3168/jds.2021-21634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 03/22/2022] [Indexed: 11/19/2022]
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7
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MESSIAS TBON, MAGNANI M, PIMENTEL TC, SILVA LMD, ALVES J, GADELHA TS, MORGANO MA, PACHECO MTB, OLIVEIRA MEGD, QUEIROGA RDCRDE. Typical Brazilian cheeses: safety, mineral content and adequacy to the nutritional labeling. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.37121] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Silva MP, Carvalho AF, Andretta M, Nero LA. Presence and growth prediction of Staphylococcus spp. and Staphylococcus aureus in Minas Frescal cheese, a soft fresh cheese produced in Brazil. J Dairy Sci 2021; 104:12312-12320. [PMID: 34593231 DOI: 10.3168/jds.2021-20633] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 08/18/2021] [Indexed: 11/19/2022]
Abstract
Physical-chemical characteristics of Minas Frescal cheese (MFC) favor the growth of Staphylococcus spp. and allow the production of enterotoxins by specific strains. Here, we aimed to characterize the physical-chemical aspects (pH, storage temperature, and salt content) and the presence of Staphylococcus spp. in MFC samples (n = 50) to support a modeling study for the growth by this microorganism. Coagulase-positive staphylococci isolates were obtained and subjected to PCR assays to identify them as Staphylococcus aureus (nuc) and to detect staphylococcal enterotoxin-related genes (sea, seb, sec, sed, see). Staphylococcus aureus growth kinetics (maximum growth rate, Grmax, and lag time) were predicted based on ComBase model and MFC physical-chemical aspects. Mean counts of Staphylococcus spp. ranged from 3.3 to 6.7 log cfu/g, indicating poor hygiene practices during production. Selected isolates (n = 10) were identified as S. aureus, but none presented classical enterotoxin-related genes. pH, temperature, and salt content ranged from 5.80 to 6.62, 5°C to 12°C, and 0.85% to 1.70%, respectively. The Grmax values ranged from 0.012 to 0.419 log cfu/g per h. Independent of the storage temperature, the lowest Grmax values (0.012 to 0.372 log cfu/h) were obtained at pH 5.80 associated with salt content of 1.7%; independent of the pH and salt content, the best temperature to avoid staphylococcal growth was 7.5°C. Hygienic conditions during MFC production must be adopted to avoid staphylococcal contamination, and storage at temperatures lower than 7.5°C can prevent staphylococcal growth and the potential production of enterotoxins.
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Affiliation(s)
- Mirian P Silva
- Departamento de Veterinária, InsPOA-Laboratório de Inspeção de Produtos de Origem Animal, Universidade Federal de Viçosa, Campus Universitário, Centro, Viçosa MG 36570 900, Brazil; Departamento de Tecnologia de Alimentos, Inovaleite-Laboratório de Ciência e Tecnologia do Leite e Derivados, Universidade Federal de Viçosa, Campus Universitário, Centro, Viçosa MG 36570 900, Brazil
| | - Antonio F Carvalho
- Departamento de Tecnologia de Alimentos, Inovaleite-Laboratório de Ciência e Tecnologia do Leite e Derivados, Universidade Federal de Viçosa, Campus Universitário, Centro, Viçosa MG 36570 900, Brazil
| | - Milimani Andretta
- Departamento de Veterinária, InsPOA-Laboratório de Inspeção de Produtos de Origem Animal, Universidade Federal de Viçosa, Campus Universitário, Centro, Viçosa MG 36570 900, Brazil
| | - Luís A Nero
- Departamento de Veterinária, InsPOA-Laboratório de Inspeção de Produtos de Origem Animal, Universidade Federal de Viçosa, Campus Universitário, Centro, Viçosa MG 36570 900, Brazil.
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Possas A, Bonilla-Luque OM, Valero A. From Cheese-Making to Consumption: Exploring the Microbial Safety of Cheeses through Predictive Microbiology Models. Foods 2021; 10:foods10020355. [PMID: 33562291 PMCID: PMC7915996 DOI: 10.3390/foods10020355] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 12/12/2022] Open
Abstract
Cheeses are traditional products widely consumed throughout the world that have been frequently implicated in foodborne outbreaks. Predictive microbiology models are relevant tools to estimate microbial behavior in these products. The objective of this study was to conduct a review on the available modeling approaches developed in cheeses, and to identify the main microbial targets of concern and the factors affecting microbial behavior in these products. Listeria monocytogenes has been identified as the main hazard evaluated in modelling studies. The pH, aw, lactic acid concentration and temperature have been the main factors contemplated as independent variables in models. Other aspects such as the use of raw or pasteurized milk, starter cultures, and factors inherent to the contaminating pathogen have also been evaluated. In general, depending on the production process, storage conditions, and physicochemical characteristics, microorganisms can grow or die-off in cheeses. The classical two-step modeling has been the most common approach performed to develop predictive models. Other modeling approaches, including microbial interaction, growth boundary, response surface methodology, and neural networks, have also been performed. Validated models have been integrated into user-friendly software tools to be used to obtain estimates of microbial behavior in a quick and easy manner. Future studies should investigate the fate of other target bacterial pathogens, such as spore-forming bacteria, and the dynamic character of the production process of cheeses, among other aspects. The information compiled in this study helps to deepen the knowledge on the predictive microbiology field in the context of cheese production and storage.
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da Silva Abreu AC, Matos LG, da Silva Cândido TJ, Barboza GR, de Souza VVMA, Munive Nuñez KV, Cirone Silva NC. Antimicrobial resistance of Staphylococcus spp. isolated from organic and conventional Minas Frescal cheese producers in São Paulo, Brazil. J Dairy Sci 2021; 104:4012-4022. [PMID: 33516545 DOI: 10.3168/jds.2020-19338] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 11/02/2020] [Indexed: 12/22/2022]
Abstract
The genus Staphylococcus is recognized worldwide as a cause of bacterial infections in humans and animals. Antibiotics used in dairy cattle combined with ineffective control can increase antimicrobial resistance. The objective of this study was to characterize 95 Staphylococcus strains isolated from organic and conventional Minas Frescal cheese production regarding antibiotic resistance (phenotype and genotype), presence of sanitizer-resistant genes and biofilm-formation genes, and SCCmec typing. Most strains (25.3%) showed higher resistance to penicillin, followed by oxacillin (21.1%) and clindamycin (11.6%). Among antibiotic resistance genes, the most prevalent were blaZ (25.3%), mecA (13.7%), lsaB (6.3%), msrA (4.2%), ant4 (3.2%), and tetM (2.1%); among sanitizer-resistance genes they were qacA/B (5.3%) and qacC (6.3%); and among biofilm, bap (4.2%), icaA (29.5%), icaD (41.1%). However, there was no statistically significant difference between organic and conventional dairy products, possibly due to the lack of synthetic antibiotic use on conventional farms during the sample collection period. Methicillin-resistant Staphylococcus aureus (MRSA) had their SCCmec identified as types I and IVc, and the methicillin-resistant coagulase-negative staphylococci had nontypeable SCCmec. These results suggest that there are antibiotic-resistant strains in both organic and conventional Minas Frescal cheese production in the state of São Paulo, Brazil. This supports the idea that improved quality control is needed from the milking stage up to the final product.
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Affiliation(s)
| | - Luiz Gustavo Matos
- Department of Food Science, School of Food Engineering, University of Campinas, Campinas, São Paulo, 13083-862, Brazil
| | - Talita Junia da Silva Cândido
- Department of Food Science, School of Food Engineering, University of Campinas, Campinas, São Paulo, 13083-862, Brazil
| | - Giovana Rueda Barboza
- Department of Food Science, School of Food Engineering, University of Campinas, Campinas, São Paulo, 13083-862, Brazil
| | | | - Karen Vanessa Munive Nuñez
- Department of Food Science, School of Food Engineering, University of Campinas, Campinas, São Paulo, 13083-862, Brazil
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Onjong HA, Ntuli V, Mwaniki M, Njage PMK. Exposure assessment to staphylococcus enterotoxins in Nile tilapia (Oreochromis niloticus) supplied through semi-regulated and unregulated value chains. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Prezzi LE, Lee SHI, Nunes VMR, Corassin CH, Pimentel TC, Rocha RS, Ramos GLPA, Guimarães JT, Balthazar CF, Duarte MCKH, Freitas MQ, Esmerino EA, Silva MC, Cruz AG, Oliveira CAF. Effect of Lactobacillus rhamnosus on growth of Listeria monocytogenes and Staphylococcus aureus in a probiotic Minas Frescal cheese. Food Microbiol 2020; 92:103557. [PMID: 32950151 DOI: 10.1016/j.fm.2020.103557] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 04/30/2020] [Accepted: 06/01/2020] [Indexed: 12/15/2022]
Abstract
This study aimed to evaluate the effect of Lactobacillus rhamnosus GG on growth of Staphylococcus aureus and Listeria monocytogenes, inoculated alone or in combination on surface of Minas Frescal cheeses, during storage for 21 days at 7 °C. Survival percentages of each individual bacterial species after exposure to in vitro simulated gastrointestinal conditions (SGC) were also determined. The addition of L. rhamnosus did not affect (P > 0.05) pH, moisture, fat, protein and texture profile of Minas Frescal cheeses. L. rhamnosus was able to survive in suitable counts (>6 Log CFU/g) in cheeses from the 7th day of storage, with high survival (>74.6-86.4%) after SGC. An inhibitory effect of L. rhamnosus on L. monocytogenes was observed in cheeses (decrease of 1.1-1.6 Log CFU/g) and after SGC (20% reduction in the survival). No inhibitory effect of L. rhamnosus was observed on S. aureus counts (P > 0.05), and this microorganism did not survive the exposure to SGC. In conclusion, the addition of L. rhamnosus in Minas Frescal cheese has a potential for L. monocytogenes inhibition. Further studies are necessary to elucidate the mechanisms involved in the inhibition process and determine the survival ability of the bacterial species evaluated in in vivo experiments.
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Affiliation(s)
- Ligia E Prezzi
- University of São Paulo, School of Animal Science and Food Engineering, Department of Food Engineering, Av. Duque de Caxias Norte, 225, CEP 13635-900, Pirassununga, SP, Brazil
| | - Sarah H I Lee
- University of São Paulo, School of Animal Science and Food Engineering, Department of Food Engineering, Av. Duque de Caxias Norte, 225, CEP 13635-900, Pirassununga, SP, Brazil
| | - Valéria M R Nunes
- University of São Paulo, School of Animal Science and Food Engineering, Department of Food Engineering, Av. Duque de Caxias Norte, 225, CEP 13635-900, Pirassununga, SP, Brazil
| | - Carlos H Corassin
- University of São Paulo, School of Animal Science and Food Engineering, Department of Food Engineering, Av. Duque de Caxias Norte, 225, CEP 13635-900, Pirassununga, SP, Brazil
| | - Tatiana C Pimentel
- Federal Institute of Paraná (IFPR), Campus Paranavaí, CEP 87703-536, Paranavaí, PR, Brazil
| | - Ramon S Rocha
- Federal Institute of Rio de Janeiro (IFRJ), Food Department, CEP 20270-021, Rio de Janeiro, RJ, Brazil; Federal University Fluminense (UFF), Faculty of Veterinary Medicine, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Gustavo L P A Ramos
- Federal Institute of Rio de Janeiro (IFRJ), Food Department, CEP 20270-021, Rio de Janeiro, RJ, Brazil; Federal University Fluminense (UFF), Faculty of Veterinary Medicine, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Jonas T Guimarães
- Federal University Fluminense (UFF), Faculty of Veterinary Medicine, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Celso F Balthazar
- Federal University Fluminense (UFF), Faculty of Veterinary Medicine, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Maria Carmela K H Duarte
- Federal University Fluminense (UFF), Faculty of Veterinary Medicine, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Mônica Q Freitas
- Federal University Fluminense (UFF), Faculty of Veterinary Medicine, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Erick A Esmerino
- Federal University Fluminense (UFF), Faculty of Veterinary Medicine, 24230-340, Niterói, Rio de Janeiro, Brazil
| | - Marcia C Silva
- Federal Institute of Rio de Janeiro (IFRJ), Food Department, CEP 20270-021, Rio de Janeiro, RJ, Brazil
| | - Adriano G Cruz
- Federal Institute of Rio de Janeiro (IFRJ), Food Department, CEP 20270-021, Rio de Janeiro, RJ, Brazil
| | - Carlos A F Oliveira
- University of São Paulo, School of Animal Science and Food Engineering, Department of Food Engineering, Av. Duque de Caxias Norte, 225, CEP 13635-900, Pirassununga, SP, Brazil.
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Isolation of Enterococcus faecium, characterization of its antimicrobial metabolites and viability in probiotic Minas Frescal cheese. Journal of Food Science and Technology 2019; 56:5128-5137. [PMID: 31741537 DOI: 10.1007/s13197-019-03985-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/11/2019] [Accepted: 07/24/2019] [Indexed: 12/21/2022]
Abstract
The aim of this study was to isolate Enterococcus faecium from raw milk samples, to characterize its antimicrobial metabolites, and to evaluate its viability in a probiotic Minas Frescal cheese. For this, antagonist activity against Listeria monocytogenes, safety aspects and biochemical, genotypic, and probiotic characteristics of the isolates were evaluated. Minas Frescal cheese was manufactured with the isolate that showed the best characteristics in vitro, and its viability in the product was evaluated. It was observed that of the 478 lactic acid bacteria isolates, only isolate E297 presented antagonist activity, genes encoding for enterocin production and absence of virulence factors. Besides that, E297 presented probiotic characteristics in vitro, and maintained its viability (8.09 log CFU mL-1) for 14 days of cold storage, when it was added to cheese. Therefore, isolate E297 can be considered a promising microorganism for the manufacture of probiotic foods, especially Minas Frescal cheese.
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Chronocoulometric aptamer based assay for staphylococcal enterotoxin B by target-triggered assembly of nanostructured dendritic nucleic acids on a gold electrode. Mikrochim Acta 2019; 186:109. [PMID: 30637509 DOI: 10.1007/s00604-019-3236-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Accepted: 01/05/2019] [Indexed: 01/01/2023]
Abstract
A rapid and ultrasensitive method is described for the detection of staphylococcal enterotoxin B (SEB). It is based on the formation of a dendritic DNA superstructure by integrating (a) target-induced triggering of DNA release with (b) signal amplification by a hybridization chain reaction. Partially complementary pairing of aptamer and trigger DNA forms a duplex structure. The capture DNA is then placed on the surface of a gold electrode through gold-thiol chemistry. In the presence of SEB, the aptamer-target conjugate is compelled to form. This causes the release of trigger DNA owing to a strong competition with SEB. The trigger DNA is subsequently hybridized with the partial complementary sequences of the capture DNA to trigger HCR with three auxiliary DNA sequances (referred to as H1, H2, H3). Finally, the dendritic DNA superstructure is bound to hexaammineruthenium(III) cation by electrostatic adsorption and assembled onto the modified gold electrode. This produces an amplified electrochemical signal that is measured by chronocoulometry. Under optimal conditions, the charge difference increases linearly with the logarithm of the SEB concentrations in the range from 5 pg·mL-1 to 100 ng·mL-1 with a detection limit as low as 3 pg·mL-1 (at S/N = 3). Graphical abstract An electrochemical switching strategy is presented for the sensitive detection of Staphylococcus enterotoxin B based on target-triggered assembly of dendritic nucleic acid nanostructures.
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15
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LISOWSKA-ŁYSIAK KLAUDIA, KOSECKA-STROJEK MAJA, BIAŁECKA JOANNA, KASPROWICZ ANDRZEJ, GARBACZ KATARZYNA, PIECHOWICZ LIDIA, KMET VLADIMIR, SAVINI VINCENZO, MIĘDZOBRODZKI JACEK. New Insight into Genotypic and Phenotypic Relatedness of Staphylococcus aureus Strains from Human Infections or Animal Reservoirs. Pol J Microbiol 2019; 68:93-104. [PMID: 31050257 PMCID: PMC7256692 DOI: 10.21307/pjm-2019-011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 11/22/2018] [Accepted: 12/07/2018] [Indexed: 11/11/2022] Open
Abstract
Staphylococcus aureus is a common human and livestock opportunistic pathogen, and there is evidence of animal to human transmission. This paper aimed to recognize properties of the isolates from collections of human and livestock S. aureus strains and to estimate compatibility of results based on phenotypic tests, microarrays and the spa typing methods. The second goal was to study differences between human and animal isolates in terms of specificity of their hosts and the strain transmission among various hosts. Most strains showed multi-susceptible profiles and produced enzymes on a high level, and they were phenotypically and genetically similar. However, in contrast to the Polish bovine mastitis strains, the Slovakian strains were multi-resistant. In this research, the strains showed significant differences in terms of their phenotypic manifestations and the presence of hemolysins genes; however, other enzyme-encoding genes correlated to a higher extent with the microarrays results. Interestingly, there was a lack of enterotoxin genes in human Poultry-like protein A+ strains in comparison to other human strains. Our study showed that differences between virulence profiles of the human and animal strains correlated with their origin rather than their hosts, and any trait allowed clearly distinguishing between them based on the microarray results. Staphylococcus aureus is a common human and livestock opportunistic pathogen, and there is evidence of animal to human transmission. This paper aimed to recognize properties of the isolates from collections of human and livestock S. aureus strains and to estimate compatibility of results based on phenotypic tests, microarrays and the spa typing methods. The second goal was to study differences between human and animal isolates in terms of specificity of their hosts and the strain transmission among various hosts. Most strains showed multi-susceptible profiles and produced enzymes on a high level, and they were phenotypically and genetically similar. However, in contrast to the Polish bovine mastitis strains, the Slovakian strains were multi-resistant. In this research, the strains showed significant differences in terms of their phenotypic manifestations and the presence of hemolysins genes; however, other enzyme-encoding genes correlated to a higher extent with the microarrays results. Interestingly, there was a lack of enterotoxin genes in human Poultry-like protein A+ strains in comparison to other human strains. Our study showed that differences between virulence profiles of the human and animal strains correlated with their origin rather than their hosts, and any trait allowed clearly distinguishing between them based on the microarray results.
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Affiliation(s)
- KLAUDIA LISOWSKA-ŁYSIAK
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - MAJA KOSECKA-STROJEK
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - JOANNA BIAŁECKA
- Centre of Microbiological Research and Autovaccines, Krakow, Poland
| | | | - KATARZYNA GARBACZ
- Department of Oral Microbiology, Medical Faculty, Medical University of Gdansk, Gdansk, Poland
| | - LIDIA PIECHOWICZ
- Department of Medical Microbiology, Medical Faculty, Medical University of Gdansk, Gdansk, Poland
| | - VLADIMIR KMET
- Centre of Biosciences, Institute of Animal Physiology, Slovak Academy of Sciences, Slovakia
| | - VINCENZO SAVINI
- Clinical Microbiology and Virology, Spirito Santo Hospital, Pescara (PE), Italy
| | - JACEK MIĘDZOBRODZKI
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
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Guidi F, Duranti A, Gallina S, Nia Y, Petruzzelli A, Romano A, Travaglini V, Olivastri A, Calvaresi V, Decastelli L, Blasi G. Characterization of A Staphylococcal Food Poisoning Outbreak in A Workplace Canteen during the Post-Earthquake Reconstruction of Central Italy. Toxins (Basel) 2018; 10:E523. [PMID: 30563233 PMCID: PMC6315814 DOI: 10.3390/toxins10120523] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/30/2018] [Accepted: 12/03/2018] [Indexed: 01/01/2023] Open
Abstract
In summer 2017, a foodborne outbreak occurred in Central Italy, involving 26 workers employed in the post-earthquake reconstruction. After eating a meal provided by a catering service, they manifested gastrointestinal symptoms; 23 of them were hospitalized. The retrospective cohort study indicated the pasta salad as the most likely vehicle of poisoning. Foods, environmental samples, and food handlers' nasal swabs were collected. Bacillus cereus (Bc) and coagulase-positive staphylococci (CPS) including S. aureus, together with their toxins, were the targets of the analysis. CPS, detected in all the leftovers, exceeded 10⁵ CFU/g in the pasta salad, in which we found Staphylococcal Enterotoxins (SEs) (0.033 ng SEA/g; 0.052 ng SED/g). None of the environmental and human swabs showed contamination. We characterized 23 S. aureus from foods. They all belonged to the human biotype, showed the same toxigenic profile (sea, sed, sej, and ser genes), and had the same Pulsed Field Gel Electrophoresis (PFGE) pattern; none of them harbored mecA or mupA genes. We also detected Bc contamination in the pasta salad but none of the isolates harbored the ces gene for the emetic toxin cereulide. The EU Reference Laboratory for CPS confirmed the case as a strong-evidence outbreak caused by the ingestion of SEs produced by a single strain of S. aureus carried by the same human source. This outbreak was successfully investigated despite the emergency situation in which it occurred.
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Affiliation(s)
- Fabrizia Guidi
- Istituto Zooprofilattico Sperimentale Umbria e Marche "Togo Rosati", via G. Salvemini 1, 06126 Perugia, Italy.
| | - Anna Duranti
- Istituto Zooprofilattico Sperimentale Umbria e Marche "Togo Rosati", via G. Salvemini 1, 06126 Perugia, Italy.
| | - Silvia Gallina
- National Reference Laboratory for Coagulase Positive Staphylococci - Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, via Bologna 148, 10154 Torino, Italy.
| | - Yacine Nia
- European Union Reference Laboratory for Coagulase Positive Staphylococci - Laboratory for Food Safety, Anses, Université Paris-Est, F-94700 Maisons-Alfort, France.
| | - Annalisa Petruzzelli
- Istituto Zooprofilattico Sperimentale Umbria e Marche "Togo Rosati", via G. Salvemini 1, 06126 Perugia, Italy.
| | - Angelo Romano
- National Reference Laboratory for Coagulase Positive Staphylococci - Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, via Bologna 148, 10154 Torino, Italy.
| | - Valeria Travaglini
- Presidio Ospedaliero C. e G. Mazzoni, Azienda Sanitaria Unica Regione Marche, Area Vasta n°5, via Degli Iris 1, 63100 Ascoli Piceno, Italy.
| | - Alberto Olivastri
- Dipartimento di Prevenzione, Azienda Sanitaria Unica Regione Marche, Area Vasta n°5, Viale Marcello Federici, 63100 Ascoli Piceno, Italy.
| | - Vincenzo Calvaresi
- Dipartimento di Prevenzione, Azienda Sanitaria Unica Regione Marche, Area Vasta n°5, Viale Marcello Federici, 63100 Ascoli Piceno, Italy.
| | - Lucia Decastelli
- National Reference Laboratory for Coagulase Positive Staphylococci - Istituto Zooprofilattico Sperimentale del Piemonte, Liguria e Valle d'Aosta, via Bologna 148, 10154 Torino, Italy.
| | - Giuliana Blasi
- Istituto Zooprofilattico Sperimentale Umbria e Marche "Togo Rosati", via G. Salvemini 1, 06126 Perugia, Italy.
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Alves VF, Niño-Arias FC, Pitondo-Silva A, de Araújo Frazilio D, de Oliveira Gonçalves L, Chaul Toubas L, Sapateiro Torres IM, Oxaran V, Dittmann KK, De Martinis ECP. Molecular characterisation of Staphylococcus aureus from some artisanal Brazilian dairies. Int Dairy J 2018. [DOI: 10.1016/j.idairyj.2018.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Chen X, Shi X, Liu Y, Lu L, Lu Y, Xiong X, Liu Y, Xiong X. Impedimetric determination of Staphylococcal enterotoxin B using electrochemical switching with DNA triangular pyramid frustum nanostructure. Mikrochim Acta 2018; 185:460. [DOI: 10.1007/s00604-018-2983-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 08/28/2018] [Indexed: 02/04/2023]
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Matera J, Luna AS, Batista DB, Pimentel TC, Moraes J, Kamimura BA, Ferreira MVS, Silva HL, Mathias SP, Esmerino EA, Freitas MQ, Raices RS, Quitério SL, Sant'Ana AS, Silva MC, Cruz AG. Brazilian cheeses: A survey covering physicochemical characteristics, mineral content, fatty acid profile and volatile compounds. Food Res Int 2018; 108:18-26. [DOI: 10.1016/j.foodres.2018.03.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/04/2018] [Accepted: 03/04/2018] [Indexed: 02/07/2023]
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