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Roncero E, Andrade MJ, Álvarez M, Cebrián E, Delgado J. Deciphering the antiochratoxigenic activity of plant extracts and Debaryomyces hansenii against Penicillium nordicum in a "chorizo"-based medium by proteomic analysis. Meat Sci 2024; 216:109591. [PMID: 38991481 DOI: 10.1016/j.meatsci.2024.109591] [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: 03/19/2024] [Revised: 07/02/2024] [Accepted: 07/02/2024] [Indexed: 07/13/2024]
Abstract
Penicillium nordicum is the main ochratoxin A (OTA)-producing species on the surface of dry-fermented sausages, such as the "chorizo". New antifungal strategies are being developed using biocontrol agents (BCAs), such as plant extracts and native microorganisms. This work aimed to evaluate the antiochratoxigenic capacity and the causative modes of action of BCAs (rosemary essential oil (REO), acorn shell extract and the yeast Debaryomyces hansenii (Dh)) in a "chorizo"-based medium (Ch-DS). BCAs were inoculated on Ch-DS together with P. nordicum and incubated at 12 °C for 15 days to collect mycelia for OTA analyses and comparative proteomics. Both REO and Dh alone decreased OTA accumulation up to 99% and affected the abundance of P. nordicum proteins linked to cell wall organisation, synthesis of OTA-related metabolites and ergosterol synthesis. It is worth highlighting the increased abundance of an amidase by REO, matching with the decrease in OTA. The use of REO and Dh as BCAs could be an effective strategy to reduce the OTA hazard in the meat industry. Based on their not fully coincident modes of action, their combined application could be of interest in "chorizo" to maximise their potential against ochratoxigenic strains.
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Affiliation(s)
- Elia Roncero
- Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - María J Andrade
- Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain.
| | - Micaela Álvarez
- Sección Departamental de Nutrición y Ciencia de los Alimentos (Nutrición, Bromatología, Higiene y Seguridad Alimentaria), Facultad de Veterinaria, Universidad Complutense de Madrid, 28040 Madrid, Spain
| | - Eva Cebrián
- Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
| | - Josué Delgado
- Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, 10003 Cáceres, Spain
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Nazareth TDM, Soriano Pérez E, Luz C, Meca G, Quiles JM. Comprehensive Review of Aflatoxin and Ochratoxin A Dynamics: Emergence, Toxicological Impact, and Advanced Control Strategies. Foods 2024; 13:1920. [PMID: 38928866 PMCID: PMC11203094 DOI: 10.3390/foods13121920] [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: 04/11/2024] [Revised: 05/27/2024] [Accepted: 06/15/2024] [Indexed: 06/28/2024] Open
Abstract
Filamentous fungi exhibit remarkable adaptability to diverse substrates and can synthesize a plethora of secondary metabolites. These metabolites, produced in response to environmental stimuli, not only confer selective advantages but also encompass potentially deleterious mycotoxins. Mycotoxins, exemplified by those originating from Alternaria, Aspergillus, Penicillium, and Fusarium species, represent challenging hazards to both human and animal health, thus warranting stringent regulatory control. Despite regulatory frameworks, mycotoxin contamination remains a pressing global challenge, particularly within cereal-based matrices and their derived by-products, integral components of animal diets. Strategies aimed at mitigating mycotoxin contamination encompass multifaceted approaches, including biological control modalities, detoxification procedures, and innovative interventions like essential oils. However, hurdles persist, underscoring the imperative for innovative interventions. This review elucidated the prevalence, health ramifications, regulatory paradigms, and evolving preventive strategies about two prominent mycotoxins, aflatoxins and ochratoxin A. Furthermore, it explored the emergence of new fungal species, and biocontrol methods using lactic acid bacteria and essential mustard oil, emphasizing their efficacy in mitigating fungal spoilage and mycotoxin production. Through an integrative examination of these facets, this review endeavored to furnish a comprehensive understanding of the multifaceted challenges posed by mycotoxin contamination and the emergent strategies poised to ameliorate its impact on food and feed safety.
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Affiliation(s)
- Tiago de Melo Nazareth
- Laboratory of Food Chemistry and Toxicology, Faculty of Pharmacy, University of Valencia, Av. Vicent Andrés Estellés s/n, 46100 Burjassot, Spain; (E.S.P.); (C.L.); (G.M.); (J.M.Q.)
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Álvarez M, Agostini I, Sampaio A, Román Á, Delgado J, Rodrigues P. Unravelling the effect of control agents on Gnomoniopsis smithogilvyi on a chestnut-based medium by proteomics. PEST MANAGEMENT SCIENCE 2024; 80:1895-1903. [PMID: 38053437 DOI: 10.1002/ps.7920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/25/2023] [Accepted: 12/06/2023] [Indexed: 12/07/2023]
Abstract
BACKGROUND Gnomoniopsis smithogilvyi is the major chestnut pathogen, responsible for economic losses and recently described as a 3-nitropropionic acid and diplodiatoxin mycotoxin producer. Bacillus amyloliquefaciens QST 713 (Serenade® ASO), B. amyloliquefaciens CIMO-BCA1, and the fungicide Horizon® (tebuconazole) have been shown to reduce the growth of G. smithogilvyi. However, they enhanced mycotoxin production. Proteomics can clarify the mould's physiology and the impact of antifungal agents on the mould's metabolism. Thus, the aim of this study was to assess the impact of Horizon®, Serenade®, and B. amyloliquefaciens CIMO-BCA1 in the proteome of G. smithogilvyi to unveil their modes of action and decipher why the mould responds by increasing the mycotoxin production. For this, the mycelium close to the inhibition zone provoked by antifungals was macroscopically and microscopically observed. Proteins were extracted and analysed using a Q-Exactive plus Orbitrap. RESULTS The results did not elucidate specific proteins involved in the mycotoxin biosynthesis, but these agents provoked different kinds of stress on the mould, mainly affecting the cell wall structures and antioxidant response, which points to the mycotoxins overproduction as a defence mechanism. The biocontrol agent CIMO-BCA1 acts similar to tebuconazole. The results revealed different responses on the mould's metabolism when co-cultured with the two B. amyloliquefaciens, showing different modes of action of each bacterium, which opens the possibility of combining both biocontrol strategies. CONCLUSION These results unveil different modes of action of the treatments that could help to reduce the use of toxic chemicals to combat plant pathogens worldwide. © 2023 Society of Chemical Industry.
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Affiliation(s)
- Micaela Álvarez
- Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
- Sección Departamental de Nutrición y Ciencia de los Alimentos (Nutrición, Bromatología, Higiene y Seguridad Alimentaria), Facultad de Veterinaria, Universidad Complutense de Madrid, Madrid, Spain
| | - Isadora Agostini
- Centro de Investigação de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, Portugal
| | - Ana Sampaio
- Centre for the Research and Technology of Agro-Environmental and Biological Sciences, University of Trás-os-Montes e Alto Douro (UTAD), Vila Real, Portugal
- Laboratório Associado Instituto para a Inovação, Capacitação e Sustentabilidade da Produção Agroalimentar, Universidad de Trás-os-Montes e Alto Douro (UTAD), Quinta de Prados, Vila Real, Portugal
| | - Ángel Román
- Departamento de Bioquímica, Biología Molecular y Genética, Facultad de Ciencias, Universidad de Extremadura, Badajoz, Spain
| | - Josué Delgado
- Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, Cáceres, Spain
| | - Paula Rodrigues
- Centro de Investigação de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, Portugal
- Laboratório Associado para a Sustentabilidade e Tecnologia em Regiões de Montanha, Instituto Politécnico de Bragança, Campus de Santa Apolónia, Bragança, Portugal
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He Y, Degraeve P, Oulahal N. Bioprotective yeasts: Potential to limit postharvest spoilage and to extend shelf life or improve microbial safety of processed foods. Heliyon 2024; 10:e24929. [PMID: 38318029 PMCID: PMC10839994 DOI: 10.1016/j.heliyon.2024.e24929] [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: 12/22/2023] [Revised: 01/16/2024] [Accepted: 01/17/2024] [Indexed: 02/07/2024] Open
Abstract
Yeasts are a widespread group of microorganisms that are receiving increasing attention from scientists and industry. Their diverse biological activities and broad-spectrum antifungal activity make them promising candidates for application, especially in postharvest biocontrol of fruits and vegetables and food biopreservation. The present review focuses on recent knowledge of the mechanisms by which yeasts inhibit pathogenic fungi and/or spoilage fungi and bacteria. The main mechanisms of action of bioprotective yeasts include competition for nutrients and space, synthesis and secretion of antibacterial compounds, mycoparasitism and the secretion of lytic enzymes, biofilm formation, quorum sensing, induced systemic resistance of fruit host, as well as the production of reactive oxygen species. Preadaptation of yeasts to abiotic stresses such as cold acclimatization and sublethal oxidative stress can improve the effectiveness of antagonistic yeasts and thus more effectively play biocontrol roles under a wider range of environmental conditions, thereby reducing economic losses. Combined application with other antimicrobial substances can effectively improve the efficacy of yeasts as biocontrol agents. Yeasts show great potential as substitute for chemical additives in various food fields, but their commercialization is still limited. Hence, additional investigation is required to explore the prospective advancements of yeasts in the field of biopreservation for food.
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Affiliation(s)
- Yan He
- Université Lyon, Université Claude Bernard Lyon 1, BioDyMIA Research Unit, ISARA, 155 Rue Henri de Boissieu, F-01000, Bourg en Bresse, France
| | - Pascal Degraeve
- Université Lyon, Université Claude Bernard Lyon 1, BioDyMIA Research Unit, ISARA, 155 Rue Henri de Boissieu, F-01000, Bourg en Bresse, France
| | - Nadia Oulahal
- Université Lyon, Université Claude Bernard Lyon 1, BioDyMIA Research Unit, ISARA, 155 Rue Henri de Boissieu, F-01000, Bourg en Bresse, France
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Cebrián E, Roncero E, Delgado J, Núñez F, Rodríguez M. Deciphering Staphylococcus xylosus and Staphylococcus equorum mode of action against Penicillium nordicum in a dry-cured ham model system. Int J Food Microbiol 2023; 405:110342. [PMID: 37523903 DOI: 10.1016/j.ijfoodmicro.2023.110342] [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: 03/07/2023] [Revised: 06/09/2023] [Accepted: 07/25/2023] [Indexed: 08/02/2023]
Abstract
Penicillium nordicum is one of the major producers of ochratoxin A (OTA) in dry-cured ham. Staphylococcus xylosus Sx8 and Staphylococcus equorum Se31 have been previously proposed as biocontrol agents (BCAs) to prevent the OTA contamination, although their antifungal mode of action has not been established yet. Thus, the aim of this work was to elucidate their mode of action against P. nordicum in a dry-cured ham model system. For this, the effect of live cells, dead cells, and cell-free broth; the nutritional utilisation pattern, niche overlap index (NOI), interactions by dual-culture assays, antifungal effect of volatile compounds, OTA detoxification, and effect on fungal proteome were determined. No fungal growth was observed after 14 days of co-culture with live cells of each staphylococcus at 15 or 20 °C. However, such inhibition was not observed with either dead cells or extracellular extracts. The number of carbon sources utilised by P. nordicum was higher than those used by both cocci at 20 °C, whilst the opposite occurred at 15 °C. According to NOI, nutritional dominance depends on temperature, at 20 °C P. nordicum dominated the niche, but at 15 °C the mould is dominated by the BCAs. The volatile pattern generated by each coccus did not show antifungal effect, and both staphylococci failed to degrade or adsorb OTA. However, in the interaction assay, S. xylosus and S. equorum were able to decrease the fungal growth and its OTA production. In addition, proteomic analyses showed changes in the abundance of proteins related to the cell wall integrity (CWI), carbohydrate metabolism and the biosynthesis of secondary metabolites such as OTA. In conclusion, overall, the antagonistic effects of the two studied cocci against P. nordicum are greater at 15 °C than at 20 °C, being linked to competition for space and nutrients, triggering alterations in CWI pathway, OTA biosynthesis, and carbohydrate metabolism.
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Affiliation(s)
- Eva Cebrián
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Elia Roncero
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Josué Delgado
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain.
| | - Félix Núñez
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Mar Rodríguez
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
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6
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Delgado J, Álvarez M, Cebrián E, Martín I, Roncero E, Rodríguez M. Biocontrol of Pathogen Microorganisms in Ripened Foods of Animal Origin. Microorganisms 2023; 11:1578. [PMID: 37375080 DOI: 10.3390/microorganisms11061578] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Revised: 06/09/2023] [Accepted: 06/12/2023] [Indexed: 06/29/2023] Open
Abstract
Ripened foods of animal origin comprise meat products and dairy products, being transformed by the wild microbiota which populates the raw materials, generating highly appreciated products over the world. Together with this beneficial microbiota, both pathogenic and toxigenic microorganisms such as Listeria monocytogenes, Salmonella enterica, Staphylococcus aureus, Clostridium botulinum, Escherichia coli, Candida spp., Penicillium spp. and Aspergillus spp., can contaminate these products and pose a risk for the consumers. Thus, effective strategies to hamper these hazards are required. Additionally, consumer demand for clean label products is increasing. Therefore, the manufacturing sector is seeking new efficient, natural, low-environmental impact and easy to apply strategies to counteract these microorganisms. This review gathers different approaches to maximize food safety and discusses the possibility of their being applied or the necessity of new evidence, mainly for validation in the manufacturing product and its sensory impact, before being implemented as preventative measures in the Hazard Analysis and Critical Control Point programs.
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Affiliation(s)
- Josué Delgado
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Micaela Álvarez
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Eva Cebrián
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Irene Martín
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Elia Roncero
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Mar Rodríguez
- Higiene y Seguridad Alimentaria, Instituto de Investigación de Carne y Productos Cárnicos (IProCar), Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
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7
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Carvalho LM, Rocha TC, Delgado J, Díaz-Velasco S, Madruga MS, Estévez M. Deciphering the underlying mechanisms of the oxidative perturbations and impaired meat quality in Wooden breast myopathy by label-free quantitative MS-based proteomics. Food Chem 2023; 423:136314. [PMID: 37167669 DOI: 10.1016/j.foodchem.2023.136314] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2023] [Revised: 04/25/2023] [Accepted: 05/03/2023] [Indexed: 05/13/2023]
Abstract
The study aimed to investigate biochemical mechanisms occurred in Wooden breast (WB) chicken meat, with attention to the impact on meat quality. Commercial chicken breasts were classified as Normal (N, n = 12), WB-M (moderate degree; focal hardness on cranial region, n = 12) and WB-S (severe degree; extreme and diffused hardness over the entire surface, n = 12). Samples were analyzed for physico-chemical properties, oxidative damage to lipids and proteins, and discriminating sarcoplasmic proteins by using a Q-Exactive mass spectrometer. WB meat presented impaired composition and functionality and higher levels of lipid and protein oxidation markers than N meat. The proteomic profile of WB-S presents a dynamic regulation of the relevant proteins involved in redox homeostasis, carbohydrate, protein and lipid metabolisms. Proteomics results demonstrate that the physiological and metabolic processes of muscles affected by WB myopathy are involved in combating the inflammatory process and in repairing the damaged tissue by oxidative stress.
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Affiliation(s)
- Leila M Carvalho
- Postgraduate Program in Food Science and Technology. Department of Food Engineering, Federal University of Paraiba, João Pessoa, Paraíba, Brazil
| | - Thayse C Rocha
- Postgraduate Program in Food Science and Technology. Department of Food Engineering, Federal University of Paraiba, João Pessoa, Paraíba, Brazil
| | - Josué Delgado
- Higiene y Seguridad Alimentaria, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Silvia Díaz-Velasco
- Tecnología de los Alimentos, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain
| | - Marta S Madruga
- Postgraduate Program in Food Science and Technology. Department of Food Engineering, Federal University of Paraiba, João Pessoa, Paraíba, Brazil
| | - Mario Estévez
- Tecnología de los Alimentos, Instituto Universitario de Investigación de Carne y Productos Cárnicos, Facultad de Veterinaria, Universidad de Extremadura, Avda. de las Ciencias s/n, 10003 Cáceres, Spain.
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8
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Proteomics as a New-Generation Tool for Studying Moulds Related to Food Safety and Quality. Int J Mol Sci 2023; 24:ijms24054709. [PMID: 36902140 PMCID: PMC10003330 DOI: 10.3390/ijms24054709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/24/2023] [Accepted: 02/26/2023] [Indexed: 03/06/2023] Open
Abstract
Mould development in foodstuffs is linked to both spoilage and the production of mycotoxins, provoking food quality and food safety concerns, respectively. The high-throughput technology proteomics applied to foodborne moulds is of great interest to address such issues. This review presents proteomics approaches useful for boosting strategies to minimise the mould spoilage and the hazard related to mycotoxins in food. Metaproteomics seems to be the most effective method for mould identification despite the current problems related to the bioinformatics tool. More interestingly, different high resolution mass spectrometry tools are suitable for evaluating the proteome of foodborne moulds able to unveil the mould's response under certain environmental conditions and the presence of biocontrol agents or antifungals, being sometimes combined with a method with limited ability to separate proteins, the two-dimensional gel electrophoresis. However, the matrix complexity, the high ranges of protein concentrations needed and the performing of multiple steps are some of the proteomics limitations for the application to foodborne moulds. To overcome some of these limitations, model systems have been developed and proteomics applied to other scientific fields, such as library-free data independent acquisition analyses, the implementation of ion mobility, and the evaluation of post-translational modifications, are expected to be gradually implemented in this field for avoiding undesirable moulds in foodstuffs.
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Álvarez M, Andrade MJ, Delgado J, Núñez F, Román ÁC, Rodrigues P. Rosmarinus officinalis reduces the ochratoxin A production by Aspergillus westerdijkiae in a dry-cured fermented sausage-based medium. Food Control 2023. [DOI: 10.1016/j.foodcont.2022.109436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Agregán R, Pateiro M, Kumar M, Franco D, Capanoglu E, Dhama K, Lorenzo JM. The potential of proteomics in the study of processed meat products. J Proteomics 2023; 270:104744. [PMID: 36220542 DOI: 10.1016/j.jprot.2022.104744] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/06/2022]
Abstract
Proteomics is a field that has grown rapidly since its emergence in the mid-1990s, reaching many disciplines such as food technology. The application of proteomic techniques in the study of complex biological samples such as foods, specifically meat products, allows scientists to decipher the underlying cellular mechanisms behind different quality traits. Lately, much emphasis has been placed on the discovery of biomarkers that facilitate the prediction of biochemical transformations of the product and provide key information on parameters associated with traceability and food safety. This review study focuses on the contribution of proteomics in the improvement of processed meat products. Different techniques and strategies have recently been successfully carried out in the study of the proteome of these products that can help the development of foods with a higher sensory quality, while ensuring consumer safety through early detection of microbiological contamination and fraud. SIGNIFICANCE: The food industry and the academic world work together with the aim of responding to market demands, always seeking excellence. In particular, the meat industry has to face a series of challenges such as, achieving sensory attributes in accordance with the standards required by the consumer and maintaining a high level of safety and transparency, avoiding deliver adulterated and/or contaminated products. This review work exposes how the aforementioned challenges are attempted to be solved through proteomic technology, discussing the latest and most outstanding research in this regard, which undoubtedly contribute to improving the quality, in all the extension of the word, of meat products, providing relevant knowledge in the field of proteomic research.
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Affiliation(s)
- Rubén Agregán
- Centro Tecnológico de la Carne de Galicia, Adva. Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain
| | - Mirian Pateiro
- Centro Tecnológico de la Carne de Galicia, Adva. Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain
| | - Manoj Kumar
- Chemical and Biochemical Processing Division, ICAR-Central Institute for Research on Cotton Technology, Mumbai 400019, India
| | - Daniel Franco
- Centro Tecnológico de la Carne de Galicia, Adva. Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; Department of Chemical Engineering, Universidade de Santiago de Compostela, Campus Vida, 15782 Santiago de Compostela, Spain.
| | - Esra Capanoglu
- Department of Food Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469 Maslak, Istanbul, Turkey
| | - Kuldeep Dhama
- Division of Pathology, ICAR-Indian Veterinary Research Institute (IVRI), Izatnagar, 243122 Bareilly, Uttar Pradesh, India
| | - José M Lorenzo
- Centro Tecnológico de la Carne de Galicia, Adva. Galicia n° 4, Parque Tecnológico de Galicia, San Cibrao das Viñas, 32900 Ourense, Spain; Universidade de Vigo, Área de Tecnoloxía dos Alimentos, Facultade de Ciencias de Ourense, 32004 Ourense, Spain.
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Caballero V, Estévez M, Tomás-Barberán FA, Morcuende D, Martín I, Delgado J. Biodegradation of Punicalagin into Ellagic Acid by Selected Probiotic Bacteria: A Study of the Underlying Mechanisms by MS-Based Proteomics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:16273-16285. [PMID: 36519204 PMCID: PMC9801417 DOI: 10.1021/acs.jafc.2c06585] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2022] [Revised: 12/02/2022] [Accepted: 12/05/2022] [Indexed: 05/31/2023]
Abstract
Pomegranate (Punica granatum L.) is a well-known source of bioactive phenolic compounds such as ellagitannins, anthocyanins, and flavanols. Punicalagin, one of the main constituents of pomegranate, needs to be biodegraded by bacteria to yield metabolites of medicinal interest. In this work, we tested 30 lactic acid bacteria (LAB) and their capacity to transform punicalagin from a punicalagin-rich pomegranate extract into smaller bioactive molecules, namely, ellagic acid and urolithins. These were identified and quantified by high-performance liquid chromatography-electrospray ionization tandem mass spectrometry (HPLC-ESI-MS2). Further, we evaluated the molecular mechanism governing this transformation through label-free comparative MS-based proteomics. All tested LAB strains were capable of transforming punicalagin into ellagic acid, while the biosynthesis of urolithins was not observed. Proteomic analysis revealed an increase of generic transglycosylases that might have a hydrolytic role in the target phenolic molecule, coupled with an increase in the quantity of ATP-binding cassette (ABC) transporters, which might play a relevant role in transporting the resulting byproducts in and out of the cell.
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Affiliation(s)
- Víctor Caballero
- Food
Technology, IPROCAR Research Institute, Universidad de Extremadura, 10003Cáceres, Spain
- Food
Hygiene and Safety, IPROCAR Research Institute, Universidad de Extremadura, 10003Cáceres, Spain
| | - Mario Estévez
- Food
Technology, IPROCAR Research Institute, Universidad de Extremadura, 10003Cáceres, Spain
| | | | - David Morcuende
- Food
Technology, IPROCAR Research Institute, Universidad de Extremadura, 10003Cáceres, Spain
| | - Irene Martín
- Food
Hygiene and Safety, IPROCAR Research Institute, Universidad de Extremadura, 10003Cáceres, Spain
| | - Josué Delgado
- Food
Hygiene and Safety, IPROCAR Research Institute, Universidad de Extremadura, 10003Cáceres, Spain
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12
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Díaz-Velasco S, Delgado J, Peña FJ, Estévez M. Ellagic Acid Triggers the Necrosis of Differentiated Human Enterocytes Exposed to 3-Nitro-Tyrosine: An MS-Based Proteomic Study. Antioxidants (Basel) 2022; 11:antiox11122485. [PMID: 36552693 PMCID: PMC9774974 DOI: 10.3390/antiox11122485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 12/07/2022] [Accepted: 12/09/2022] [Indexed: 12/23/2022] Open
Abstract
To study the molecular basis of the toxicological effect of a dietary nitrosated amino acid, namely, 3-nitrotyrosine (3-NT), differentiated human enterocytes were exposed to dietary concentrations of this species (200 μM) and analyzed for flow cytometry, protein oxidation markers and MS-based proteomics. The possible protective role of a dietary phytochemical, ellagic acid (EA) (200 μM), was also tested. The results revealed that cell viability was significantly affected by exposure to 3-NT, with a concomitant significant increase in necrosis (p < 0.05). 3-NT affected several biological processes, such as histocompatibility complex class II (MHC class II), and pathways related to type 3 metabotropic glutamate receptors binding. Addition of EA to 3-NT-treated cells stimulated the toxicological effects of the latter by reducing the abundance of proteins involved in mitochondrial conformation. These results emphasize the impact of dietary nitrosated amino acids in intestinal cell physiology and warn about the potential negative effects of ellagic acid when combined with noxious metabolites.
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Affiliation(s)
- Silvia Díaz-Velasco
- Food Technology and Quality (TECAL), Institute of Meat and Meat Products (IPROCAR), Universidad de Extremadura, 10003 Cáceres, Spain
| | - Josué Delgado
- Food Hygiene and Safety (HISEALI), Institute of Meat and Meat Products (IPROCAR), Universidad de Extremadura, 10003 Cáceres, Spain
| | - Fernando J. Peña
- Spermatology Laboratory, Universidad de Extremadura, 10003 Cáceres, Spain
| | - Mario Estévez
- Food Technology and Quality (TECAL), Institute of Meat and Meat Products (IPROCAR), Universidad de Extremadura, 10003 Cáceres, Spain
- Correspondence:
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13
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Chen Y, Chen J, Zhu Q, Wan J. Ochratoxin A in Dry-Cured Ham: OTA-Producing Fungi, Prevalence, Detection Methods, and Biocontrol Strategies-A Review. Toxins (Basel) 2022; 14:toxins14100693. [PMID: 36287962 PMCID: PMC9612072 DOI: 10.3390/toxins14100693] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 09/26/2022] [Accepted: 10/08/2022] [Indexed: 11/05/2022] Open
Abstract
Traditional dry-cured hams are easily contaminated by toxigenic fungi during the fermentation and ripening stages. The detection and positive rates of ochratoxin A (OTA) are the highest among mycotoxins detected in traditional dry-cured hams, indicating that OTA in hams is a potential safety hazard to human health. This review addresses the mycotoxin-producing fungal species, the toxigenic conditions causing OTA contamination worldwide, the prevalence of OTA contamination in dry-cured hams, and the detection methods applied in OTA analysis. Additionally, this study introduces methods to prevent and control OTA in traditional dry-cured hams. The growth of common mycotoxin-producing fungi and the accumulation of mycotoxins in dry-cured ham can be controlled by a microbial starter. This review provides an important theoretical foundation for the research and control of OTA in traditional dry-cured hams.
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Affiliation(s)
- Yuanshan Chen
- Department of Liquor and Food Engineering, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Jiang Chen
- College of Life Sciences, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Qiujin Zhu
- Department of Liquor and Food Engineering, Guizhou University, Huaxi District, Guiyang 550025, China
| | - Jing Wan
- Department of Liquor and Food Engineering, Guizhou University, Huaxi District, Guiyang 550025, China
- Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), College of Life Sciences/Institute of Agro-Bioengineering, Guizhou University, Huaxi District, Guiyang 550025, China
- Correspondence: ; Tel.: +86-178-3034-8541
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14
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Yang Q, Dhanasekaran S, Ngea GLN, Tian S, Li B, Zhang H. Unveiling ochratoxin a controlling and biodetoxification molecular mechanisms: Opportunities to secure foodstuffs from OTA contamination. Food Chem Toxicol 2022; 169:113437. [PMID: 36165818 DOI: 10.1016/j.fct.2022.113437] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 08/21/2022] [Accepted: 09/14/2022] [Indexed: 01/10/2023]
Abstract
Anarchic growth of ochratoxin A (OTA) producing fungi during crop production, prolonged storage, and processing results in OTA contamination in foodstuffs. OTA in food exacerbates the risk of health and economic problems for consumers and farmers worldwide. Although the toxic effects of OTA on human health have not been well established, comprehensive preventive and remedial measures will be essential to eliminate OTA from foodstuffs. Strict regulations, controlling OTA at pre- or post-harvest stage, and decontamination of OTA have been adopted to prevent human and animal OTA exposure. Biological control of OTA and bio-decontamination are the most promising strategies due to their safety, specificity and nutritional value. This review addresses the current understanding of OTA biodegradation mechanisms and recent developments in OTA control and bio-decontamination strategies. Additionally, this review analyses the strength and weaknesses of different OTA control methods and the contemporary approaches to enhance the efficiency of biocontrol agents. Overall, this review will support the implementation of new strategies to effectively control OTA in food sectors. Further studies on efficacy-related issues, production issues and cost-effectiveness of OTA biocontrol are to be carried out to improve the knowledge, develop improved delivery technologies and safeguard the durability of OTA biocontrol approaches.
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Affiliation(s)
- Qiya Yang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | | | - Guillaume Legrand Ngolong Ngea
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China; Département de Transformation et Contrôle de qualité des Produits Halieutiques, Institut des Sciences Halieutiques, Université de Douala à Yabassi, PO. Box. 7236, Douala-Bassa, Cameroon
| | - Shiping Tian
- Institute of Botany, Chinese Academy of Sciences, Xiangshan Nanxincun 20, Haidian District, Beijing, 100093, China
| | - Boqiang Li
- Institute of Botany, Chinese Academy of Sciences, Xiangshan Nanxincun 20, Haidian District, Beijing, 100093, China.
| | - Hongyin Zhang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China.
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15
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Padilla P, Estévez M, Andrade MJ, Peña FJ, Delgado J. Proteomics reveal the protective effects of chlorogenic acid on Enterococcus faecium Q233 in a simulated pro-oxidant colonic environment. Food Res Int 2022; 157:111464. [PMID: 35761697 DOI: 10.1016/j.foodres.2022.111464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 05/29/2022] [Accepted: 06/01/2022] [Indexed: 11/26/2022]
Abstract
Certain phytochemicals have been found to promote the beneficial effects of probiotic bacteria although the molecular mechanisms of such interactions are poorly understood. The objective of the present study was to evaluate the impact of the exposure to 0.5 mM chlorogenic acid (CA) on the redox status and proteome of Enterococcus faecium isolated from cheese and challenged with 2.5 mM hydrogen peroxide (H2O2). The bacterium was incubated in anaerobic conditions for 48 h at 37 °C. CA exposure led to a more intense oxidative stress and accretion of bacterial protein carbonyls than those induced by H2O2. The oxidative damage to bacterial proteins was even more severe in the bacterium treated with both CA and H2O2, yet, such combination led to a strengthening of the antioxidant defenses, namely, a catalase-like activity. The proteomic study indicated that H2O2 caused a decrease in energy supply and the bacterium responded by reinforcing the membrane and wall structures and counteracting the redox and pH imbalance. CA stimulated the accretion of proteins related to translation and transcription regulators, and hydrolases. This phytochemical was able to counteract certain proteomic changes induced by H2O2 (i.e. increase of ATP binding cassete (ABC) transporter complex) and cause the increase of Rex, a redox-sensitive protein implicated in controlling metabolism and responses to oxidative stress. Although this protection should be confirmed under in vivo conditions, such effects point to benefits in animals or humans affected by disorders in which oxidative stress plays a major role.
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Affiliation(s)
- P Padilla
- Food Technology and Quality (TECAL), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain; Food Hygiene and Safety (HISEALI), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain
| | - M Estévez
- Food Technology and Quality (TECAL), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain.
| | - M J Andrade
- Food Hygiene and Safety (HISEALI), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain
| | - F J Peña
- Spermatology Laboratory, University of Extremadura, Cáceres, Spain
| | - J Delgado
- Food Hygiene and Safety (HISEALI), Institute of Meat and Meat Products (IPROCAR), University of Extremadura, Cáceres, Spain
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16
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Álvarez M, Núñez F, Delgado J, Andrade MJ, Rodrigues P. Proteomic evaluation of the effect of antifungal agents on aspergillus westerdijkiae ochratoxin A production in a dry-cured fermented sausage-based medium. Int J Food Microbiol 2022; 379:109858. [DOI: 10.1016/j.ijfoodmicro.2022.109858] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 07/12/2022] [Accepted: 07/26/2022] [Indexed: 10/16/2022]
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17
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Díaz-Velasco S, Delgado J, Peña FJ, Estévez M. Protein oxidation marker, α-amino adipic acid, impairs proteome of differentiated human enterocytes: Underlying toxicological mechanisms. BIOCHIMICA ET BIOPHYSICA ACTA. PROTEINS AND PROTEOMICS 2022; 1870:140797. [PMID: 35691541 DOI: 10.1016/j.bbapap.2022.140797] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 05/28/2022] [Accepted: 06/06/2022] [Indexed: 12/13/2022]
Abstract
Protein oxidation and oxidative stress are involved in a variety of health disorders such as colorectal adenomas, inflammatory bowel's disease, neurological disorders and aging, among others. In particular, the specific final oxidation product from lysine, the α-amino adipic acid (α-AA), has been found in processed meat products and emphasized as a reliable marker of type II diabetes and obesity. Currently, the underlying mechanisms of the biological impairments caused by α-AA are unknown. To elucidate the molecular basis of the toxicological effect of α-AA, differentiated human enterocytes were exposed to dietary concentrations of α-AA (200 μM) and analyzed by flow cytometry, protein oxidation and proteomics using a Nanoliquid Chromatography-Orbitrap MS/MS. Cell viability was significantly affected by α-AA (p < 0.05). The proteomic study revealed that α-AA was able to alter cell homeostasis through impairment of the Na+/K+-ATPase pump, energetic metabolism, and antioxidant response, among other biological processes. These results show the importance of dietary oxidized amino acids in intestinal cell physiology and open the door to further studies to reveal the impact of protein oxidation products in pathological conditions.
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Affiliation(s)
- S Díaz-Velasco
- Food Technology and Quality (TECAL), Institute of Meat and Meat Products (IPROCAR), Universidad de Extremadura, Cáceres, Spain
| | - J Delgado
- Food Hygiene and Safety (HISEALI), Institute of Meat and Meat Products (IPROCAR), Universidad de Extremadura, Cáceres, Spain
| | - F J Peña
- Spermatology Laboratory, Universidad de Extremadura, Cáceres, Spain
| | - Mario Estévez
- Food Technology and Quality (TECAL), Institute of Meat and Meat Products (IPROCAR), Universidad de Extremadura, Cáceres, Spain.
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18
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Álvarez M, Delgado J, Núñez F, Roncero E, Andrade MJ. Proteomic approach to unveil the ochratoxin A repression by Debaryomyces hansenii and rosemary on Penicillium nordicum during dry-cured fermented sausages ripening. Food Control 2022. [DOI: 10.1016/j.foodcont.2021.108695] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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19
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Sbardelotto PRR, Balbinot-Alfaro E, da Rocha M, Alfaro AT. Natural alternatives for processed meat: Legislation, markets, consumers, opportunities and challenges. Crit Rev Food Sci Nutr 2022; 63:10303-10318. [PMID: 35647788 DOI: 10.1080/10408398.2022.2081664] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Consumers' interest in food with less and/or free from synthetic additives has increased considerably in recent years. In this context, researchers and industries have concentrated efforts on developing alternatives to these compounds. Replacing synthetic additives in meat products is a challenge, given their importance for sensory characteristics and food safety. Complementary technologies combined with the replacement and/or reduction of synthetic additives (hurdle technologies) has been studied focusing on the protection and extension of the shelf life of meat products. This review reports alternatives for replacing and/or reducing the use of synthetic additives in meat derivatives, aiming at the development of more natural and simpler meat products, familiar to consumers and considered clean labels.
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Affiliation(s)
- Paula R R Sbardelotto
- Meat Technology Laboratory, Department of Food Technology, Federal University of Technology - Paraná, Francisco Beltrão, Paraná, Brazil
| | - Evellin Balbinot-Alfaro
- School of Chemistry and Food, Federal University of Rio Grande, Rio Grande, Rio Grande do Sul, Brazil
| | - Meritaine da Rocha
- School of Chemistry and Food, Federal University of Rio Grande (FURG), Rio Grande, Rio Grande do Sul, Brazil
| | - Alexandre T Alfaro
- Meat Technology Laboratory, Department of Food Technology, Federal University of Technology - Paraná, Francisco Beltrão, Paraná, Brazil
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20
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Álvarez M, Delgado J, Núñez F, Cebrián E, Andrade MJ. Proteomic analyses reveal mechanisms of action of biocontrol agents on ochratoxin A repression in Penicillium nordicum. Food Control 2021. [DOI: 10.1016/j.foodcont.2021.108232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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21
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Wang Y, Lin W, Yan H, Neng J, Zheng Y, Yang K, Xing F, Sun P. iTRAQ proteome analysis of the antifungal mechanism of citral on mycelial growth and OTA production in Aspergillus ochraceus. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:4969-4979. [PMID: 33543481 DOI: 10.1002/jsfa.11140] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 12/28/2020] [Accepted: 02/04/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Aspergillus ochraceus causes food spoilage and produces mycotoxin ochratoxin A (OTA) during storage of agricultural commodities. In this study, citral was used to inhibit A. ochraceus growth and OTA accumulation, proteomic analysis was employed to verify the mechanism of citral. RESULTS Citral was found to significantly inhibit fungal growth and mycotoxin production in A. ochraceus. Specifically, 75, 125, 150 and 200 μL L-1 citral suppressed mycelial growth by 33%, 46%, 50% and 100%, respectively. Additionally, 75 μL L-1 citral inhibited OTA accumulation by 25%. Proteomic analysis was performed to elucidate the inhibitory mechanism of citral on mycelial growth and OTA production at subinhibitory concentrations (75 μL L-1 ). Proteomics analysis identified 2646 proteins in A. ochraceus fc-1, of which 218 were differentially expressed between control and 75 μL L-1 citral treatment samples. Differentially expressed proteins were identified by Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses of biological process, cellular component and molecular function terms. Potential factors affecting mycelial growth and OTA production were analysed, and OTA production was revealed to be a complex process involving many associated factors related to various processes including nutrient intake, sterol biosynthesis, ribosome biogenesis, energy metabolism, oxidative stress and amino acid metabolism. In addition, citral at 75 μL L-1 down-regulated OTA biosynthetic genes including pks and nrps, but slightly up-regulated the global regulatory factors veA, velB and laeA. CONCLUSION The findings further demonstrate the potential of citral for the preservation of grains and other agricultural products, and provide new insight into its antifungal mechanisms at subinhibitory concentrations. © 2021 Society of Chemical Industry.
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Affiliation(s)
- Yan Wang
- College of Food Science and Technology, Zhejiang University of Technology/Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
| | - Wei Lin
- College of Food Science and Technology, Zhejiang University of Technology/Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
| | - Hao Yan
- Zhejiang Provincial Centre for Disease Control and Prevention, Hangzhou, China
| | - Jing Neng
- College of Food Science and Technology, Zhejiang University of Technology/Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
| | - Yong Zheng
- College of Food Science and Technology, Zhejiang University of Technology/Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
| | - Kai Yang
- College of Food Science and Technology, Zhejiang University of Technology/Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
| | - Fuguo Xing
- Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process, Ministry of Agriculture and Rural Affairs, Beijing, China
| | - Peilong Sun
- College of Food Science and Technology, Zhejiang University of Technology/Key Laboratory of Food Macromolecular Resources Processing Technology Research (Zhejiang University of Technology), China National Light Industry, Hangzhou, China
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22
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Bourdichon F, Arias E, Babuchowski A, Bückle A, Bello FD, Dubois A, Fontana A, Fritz D, Kemperman R, Laulund S, McAuliffe O, Miks MH, Papademas P, Patrone V, Sharma DK, Sliwinski E, Stanton C, Von Ah U, Yao S, Morelli L. The forgotten role of food cultures. FEMS Microbiol Lett 2021; 368:fnab085. [PMID: 34223876 PMCID: PMC8397475 DOI: 10.1093/femsle/fnab085] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 07/01/2021] [Indexed: 12/15/2022] Open
Abstract
Fermentation is one of if not the oldest food processing technique, yet it is still an emerging field when it comes to its numerous mechanisms of action and potential applications. The effect of microbial activity on the taste, bioavailability and preservation of the nutrients and the different food matrices has been deciphered by the insights of molecular microbiology. Among those roles of fermentation in the food chain, biopreservation remains the one most debated. Presumably because it has been underestimated for quite a while, and only considered - based on a food safety and technological approach - from the toxicological and chemical perspective. Biopreservation is not considered as a traditional use, where it has been by design - but forgotten - as the initial goal of fermentation. The 'modern' use of biopreservation is also slightly different from the traditional use, due mainly to changes in cooling of food and other ways of preservation, Extending shelf life is considered to be one of the properties of food additives, classifying - from our perspective - biopreservation wrongly and forgetting the role of fermentation and food cultures. The present review will summarize the current approaches of fermentation as a way to preserve and protect the food, considering the different way in which food cultures and this application could help tackle food waste as an additional control measure to ensure the safety of the food.
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Affiliation(s)
- François Bourdichon
- Food Safety, Microbiology, Hygiene, 16 Rue Gaston de Caillavet, 75015 Paris, France
- Facoltà di Scienze agrarie, alimentarie ambientali, Università Cattolica del Sacro Cuore, Via Emilia Parmense, Piacenza-Cremona, Italy
| | - Emmanuelle Arias
- AGROSCOPE, Food Microbial Systems, Schwarzenburgstrasse 161, CH-3003 Bern, Switzerland
| | | | - Anne Bückle
- Milchprüfring Baden-Württemberg e.V., Marie-Curie-Straße 19, 73230 Kirchheim, u.T., Germany
| | | | - Aurélie Dubois
- International Dairy Federationiry Federation, 70 Boulevard Auguste Reyers, 1030 Brussels, Belgium
| | - Alessandra Fontana
- Facoltà di Scienze agrarie, alimentarie ambientali, Università Cattolica del Sacro Cuore, Via Emilia Parmense, Piacenza-Cremona, Italy
| | - Duresa Fritz
- International Flavors and Fragrances, 20 rue Brunel, Paris 75017, France
| | - Rober Kemperman
- Lesaffre International, 152 rue du Docteur Yersin, 59120 Loos, France
| | - Svend Laulund
- Chr. Hansen A/S, Agern Allé 24, 2970 Hoersholm, Denmark
| | | | - Marta Hanna Miks
- Glycom A/S, Kogle Allé 4, 2970 Hørsholm, Denmark
- Faculty of Food Science, Food Biochemistry, University of Warmia and Mazury in Olsztyn, Plac Cieszynski 1, 10–726 Olsztyn, Poland
| | - Photis Papademas
- Department of Agricultural Sciences, Biotechnology and Food Science, Cyprus University of Technology, Archiepiskopou Kyprianou, PO BOX 50329, Limassol, Cyprus
| | - Vania Patrone
- Facoltà di Scienze agrarie, alimentarie ambientali, Università Cattolica del Sacro Cuore, Via Emilia Parmense, Piacenza-Cremona, Italy
| | | | - Edward Sliwinski
- The European Federation of Food Science & Technology, Nieuwe Kanaal 9a, 6709 PA, Wageningen, The Netherlands
| | | | - Ueli Von Ah
- AGROSCOPE, Food Microbial Systems, Schwarzenburgstrasse 161, CH-3003 Bern, Switzerland
| | - Su Yao
- China National Research Institute of Food & Fermentation Industries, China Center of Industrial Culture Collection, Building 6, No.24, Jiuxianqiaozhong Road, Chaoyang District, Beijing 100015, PR China
| | - Lorenzo Morelli
- Facoltà di Scienze agrarie, alimentarie ambientali, Università Cattolica del Sacro Cuore, Via Emilia Parmense, Piacenza-Cremona, Italy
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23
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Owens RA, Doyle S. Effects of antifungal agents on the fungal proteome: informing on mechanisms of sensitivity and resistance. Expert Rev Proteomics 2021; 18:185-199. [PMID: 33797307 DOI: 10.1080/14789450.2021.1912601] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
INTRODUCTION Antifungal agents are essential in the fight against serious fungal disease, however emerging resistance is threatening an already limited collection of therapeutics. Proteomic analyses of effects of antifungal agents can expand our understanding of multifactorial mechanisms of action and have also proven valuable to elucidate proteomic changes associated with antifungal resistance. AREAS COVERED This review covers the application of proteomic techniques to examine sensitivity and resistance to antifungals including commonly used therapeutics, amphotericin B, echinocandins and the azoles, based predominantly on studies involving Aspergillus fumigatus, Candida albicans and Candida glabrata from the last 10 years. In addition, non-clinical antimicrobial agents are also discussed, which highlight the potential of proteomics to identify new antifungal targets. EXPERT COMMENTARY Fungal proteomics has evolved in the last decade with increased genome availability and developments in mass spectrometry. Collectively, these have led to the advancement of proteomic techniques, allowing increased coverage of the proteome. Gel-based proteomics laid the foundation for these types of studies, which has now shifted to the more powerful gel-free proteomics. This has resulted in the identification of key mediators and potential biomarkers of antifungal resistance, as well as elucidating the mechanisms of action of novel and established antifungal agents.
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Affiliation(s)
- Rebecca A Owens
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland.,The Kathleen Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, Co. Kildare, Ireland
| | - Sean Doyle
- Department of Biology, Maynooth University, Maynooth, Co. Kildare, Ireland
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24
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Carvalho LM, Delgado J, Madruga MS, Estévez M. Pinpointing oxidative stress behind the white striping myopathy: depletion of antioxidant defenses, accretion of oxidized proteins and impaired proteostasis. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:1364-1371. [PMID: 32833312 DOI: 10.1002/jsfa.10747] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Revised: 07/27/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND This study aimed to investigate the molecular mechanisms involved in the onset of the white striping (WS) myopathy with particular attention to the role of oxidative stress and protein oxidation in the loss of meat quality. RESULTS It was found that WS-M (moderate degree; white stripes <1 mm thickness) and WS-S (severe degree; white stripes >1 mm thickness) breast presented higher pH, hardness, redness, lipid, and collagen content, and lower lightness than normal breast. Compared with the latter, WS-S had a more severe loss of protein thiols (70.7% less thiols than in N), reduced activity of antioxidant enzymes such as catalase (23 versus 40 U g-1 ), glutathione peroxidase (0.21 versus 0.54 U g-1 ), and superoxide dismutase (56 versus 73 U g-1 ), and consequently, had greater accretion of thiobarbituric acid reactive substances (0.64 versus 0.22 mg MDAkg-1 muscle), allysine (3.1 versus 1.9 nmol mg-1 protein) and Schiff base structures (645 versus 258 fluorescent units). The analysis of sarcoplasmic proteins revealed that muscles severely affected by the myopathy suffered a chronic impairment of physiological (upregulation of sarcoplasmic reticulum Ca2+ ATPase, sarcalumenin and calsequestrin-2) and metabolic processes (downregulation of pyruvate kinase, creatine kinase, and l-lactate dehydrogenase). CONCLUSION The overexpression of ribonuclease / angiogenin inhibitor 1 and Kelch-like proteins in WS chicken breasts indicates altered protein turnover plausibly mediated by oxidative stress and accumulation of oxidized proteins. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Leila M Carvalho
- Postgraduate Program in Food Science and Technology, Department of Food Engineering, Federal University of Paraiba, João Pessoa, Brazil
| | - Josué Delgado
- Heart Clinical Unit, Virgen de la Victoria University Clinic Hospital, Institute of Biomedical Research in Malaga, IBIMA, CIBERCV, University of Málaga, Málaga, Spain
| | - Marta S Madruga
- Postgraduate Program in Food Science and Technology, Department of Food Engineering, Federal University of Paraiba, João Pessoa, Brazil
| | - Mario Estévez
- Institute of Meat and Meat Products (IPROCAR), TECAL Research Group, University of Extremadura, Cáceres, Spain
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Palavecino Prpich NZ, Camprubí GE, Cayré ME, Castro MP. Indigenous Microbiota to Leverage Traditional Dry Sausage Production. INTERNATIONAL JOURNAL OF FOOD SCIENCE 2021; 2021:6696856. [PMID: 33604370 PMCID: PMC7868150 DOI: 10.1155/2021/6696856] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 01/19/2021] [Indexed: 12/24/2022]
Abstract
The main issue addressed in this review is the need for innovation in the artisanal production of dry fermented sausages-leveraging rather than discarding tradition, together with some practical strategies available to achieve it. Throughout the text, emphasis is placed on the autochthonous microbiota responsible for the identity and unique sensory characteristics of these products. The available strategies to introduce innovation in this manufacturing process rely on metabolic flexibility of microbial strains. In this sense, this review evaluates the application of several tools aimed at improving the quality and safety of artisanal dry fermented sausages focusing on the microbial community role. The most studied alternatives to enhance dry sausage production comprise the use of autochthonous starter cultures-including functional and/or probiotic strains, the production of bacteriocins, and the generation of bioactive peptides, which have been thoroughly covered herein. The purpose of this work is to review recent research about novel different strategies available for food technologists to improve safety and quality in the manufacture of dry fermented sausages. Additional support strategies-quality product registers and innovation through tradition-have been suggested as complementary actions towards a successful introduction of indigenous microbial communities into traditional dry sausage production.
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Affiliation(s)
- Noelia Zulema Palavecino Prpich
- Laboratorio de Microbiología de Alimentos, Universidad Nacional del Chaco Austral (UNCAus), Comandante Fernández 755, Presidencia Roque Sáenz Peña, 3700 Chaco, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), C1425FQB Buenos Aires, Argentina
| | - Germán Edgardo Camprubí
- Facultad de Ingeniería, Universidad Nacional del Nordeste (UNNE), Las Heras 727, Resistencia, 3500 Chaco, Argentina
| | - María Elisa Cayré
- Laboratorio de Microbiología de Alimentos, Universidad Nacional del Chaco Austral (UNCAus), Comandante Fernández 755, Presidencia Roque Sáenz Peña, 3700 Chaco, Argentina
| | - Marcela Paola Castro
- Laboratorio de Microbiología de Alimentos, Universidad Nacional del Chaco Austral (UNCAus), Comandante Fernández 755, Presidencia Roque Sáenz Peña, 3700 Chaco, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), C1425FQB Buenos Aires, Argentina
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García‐Béjar B, Owens RA, Briones A, Arévalo‐Villena M. Differential distribution and proteomic response of
Saccharomyces cerevisiae
and non‐model yeast species to zinc. Environ Microbiol 2020; 22:4633-4646. [DOI: 10.1111/1462-2920.15206] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Accepted: 08/18/2020] [Indexed: 12/31/2022]
Affiliation(s)
- Beatriz García‐Béjar
- Department of Analytical Chemistry and Food Technology University of Castilla‐La Mancha Ciudad Real 13071 Spain
| | - Rebecca A. Owens
- Department of Biology Maynooth University Maynooth Co. Kildare Ireland
| | - Ana Briones
- Department of Analytical Chemistry and Food Technology University of Castilla‐La Mancha Ciudad Real 13071 Spain
| | - María Arévalo‐Villena
- Department of Analytical Chemistry and Food Technology University of Castilla‐La Mancha Ciudad Real 13071 Spain
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García-Estrada C, Martín JF, Cueto L, Barreiro C. Omics Approaches Applied to Penicillium chrysogenum and Penicillin Production: Revealing the Secrets of Improved Productivity. Genes (Basel) 2020; 11:E712. [PMID: 32604893 PMCID: PMC7348727 DOI: 10.3390/genes11060712] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 06/07/2020] [Accepted: 06/24/2020] [Indexed: 12/20/2022] Open
Abstract
Penicillin biosynthesis by Penicillium chrysogenum is one of the best-characterized biological processes from the genetic, molecular, biochemical, and subcellular points of view. Several omics studies have been carried out in this filamentous fungus during the last decade, which have contributed to gathering a deep knowledge about the molecular mechanisms underlying improved productivity in industrial strains. The information provided by these studies is extremely useful for enhancing the production of penicillin or other bioactive secondary metabolites by means of Biotechnology or Synthetic Biology.
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Affiliation(s)
- Carlos García-Estrada
- INBIOTEC (Instituto de Biotecnología de León). Avda. Real 1—Parque Científico de León, 24006 León, Spain; (L.C.); (C.B.)
- Departamento de Ciencias Biomédicas, Universidad de León, Campus de Vegazana s/n, 24071 León, Spain
| | - Juan F. Martín
- Área de Microbiología, Departamento de Biología Molecular, Facultad de Ciencias Biológicas y Ambientales, Universidad de León, 24071 León, Spain;
| | - Laura Cueto
- INBIOTEC (Instituto de Biotecnología de León). Avda. Real 1—Parque Científico de León, 24006 León, Spain; (L.C.); (C.B.)
| | - Carlos Barreiro
- INBIOTEC (Instituto de Biotecnología de León). Avda. Real 1—Parque Científico de León, 24006 León, Spain; (L.C.); (C.B.)
- Departamento de Biología Molecular, Universidad de León, Campus de Ponferrada, Avda. Astorga s/n, 24401 Ponferrada, Spain
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Cebrián E, Núñez F, Gálvez FJ, Delgado J, Bermúdez E, Rodríguez M. Selection and Evaluation of Staphylococcus xylosus as a Biocontrol Agent against Toxigenic Moulds in a Dry-Cured Ham Model System. Microorganisms 2020; 8:E793. [PMID: 32466433 PMCID: PMC7356353 DOI: 10.3390/microorganisms8060793] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/16/2020] [Accepted: 05/22/2020] [Indexed: 11/23/2022] Open
Abstract
Toxigenic moulds can develop on the surface of dry-cured meat products during ripening due to their ecological conditions, which constitutes a risk for consumers. A promising strategy to control this hazard is the use of antifungal microorganisms usually found in these foods. However, to date, the effectiveness of gram-positive catalase-positive cocci (GCC+) has not been explored. The aim of this work was to select GCC+ isolates with antifungal activity to study its effectiveness in a dry-cured ham model system at the environmental conditions reached during the ripening. Forty-five strains of GCC+ were evaluated and the isolate Staphylococcus xylosus Sx8 was selected to assess its efficacy at two different concentrations (106 and 104 cfu/mL) against Penicillium nordicum, Aspergillus flavus, Aspergillus parasiticus, and Penicillium griseofulvum at 15, 20, and 25 °C. The results showed that the inoculation of 106 cfu/mL of S. xylosus completely inhibited the growth of most fungi. In addition, in the presence of this strain at 104 cfu/mL, a significant reduction in fungal growth and mycotoxins production was observed at the three temperatures studied. In conclusion, S. xylosus Sx8 possesses great potential as a biological agent to control toxigenic moulds in dry-cured meat products.
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Affiliation(s)
| | | | | | | | | | - Mar Rodríguez
- Food Hygiene and Safety, Meat and Meat Products Research Institute, Faculty of Veterinary Science, University of Extremadura, 10003 Cáceres, Spain; (E.C.); (F.N.); (F.J.G.); (J.D.); (E.B.)
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McGowan J, O’Hanlon R, Owens RA, Fitzpatrick DA. Comparative Genomic and Proteomic Analyses of Three Widespread Phytophthora Species: Phytophthora chlamydospora, Phytophthora gonapodyides and Phytophthora pseudosyringae. Microorganisms 2020; 8:E653. [PMID: 32365808 PMCID: PMC7285336 DOI: 10.3390/microorganisms8050653] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 04/27/2020] [Accepted: 04/29/2020] [Indexed: 12/16/2022] Open
Abstract
The Phytophthora genus includes some of the most devastating plant pathogens. Here we report draft genome sequences for three ubiquitous Phytophthora species-Phytophthora chlamydospora, Phytophthora gonapodyides, and Phytophthora pseudosyringae. Phytophthora pseudosyringae is an important forest pathogen that is abundant in Europe and North America. Phytophthora chlamydospora and Ph. gonapodyides are globally widespread species often associated with aquatic habitats. They are both regarded as opportunistic plant pathogens. The three sequenced genomes range in size from 45 Mb to 61 Mb. Similar to other oomycete species, tandem gene duplication appears to have played an important role in the expansion of effector arsenals. Comparative analysis of carbohydrate-active enzymes (CAZymes) across 44 oomycete genomes indicates that oomycete lifestyles may be linked to CAZyme repertoires. The mitochondrial genome sequence of each species was also determined, and their gene content and genome structure were compared. Using mass spectrometry, we characterised the extracellular proteome of each species and identified large numbers of proteins putatively involved in pathogenicity and osmotrophy. The mycelial proteome of each species was also characterised using mass spectrometry. In total, the expression of approximately 3000 genes per species was validated at the protein level. These genome resources will be valuable for future studies to understand the behaviour of these three widespread Phytophthora species.
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Affiliation(s)
- Jamie McGowan
- Department of Biology, Maynooth University, Maynooth, W23 F2H6 Co. Kildare, Ireland; (R.A.O.); (D.A.F.)
- Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, W23 F2H6 Co. Kildare, Ireland
| | | | - Rebecca A. Owens
- Department of Biology, Maynooth University, Maynooth, W23 F2H6 Co. Kildare, Ireland; (R.A.O.); (D.A.F.)
- Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, W23 F2H6 Co. Kildare, Ireland
| | - David A. Fitzpatrick
- Department of Biology, Maynooth University, Maynooth, W23 F2H6 Co. Kildare, Ireland; (R.A.O.); (D.A.F.)
- Lonsdale Institute for Human Health Research, Maynooth University, Maynooth, W23 F2H6 Co. Kildare, Ireland
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Competitiveness of three biocontrol candidates against ochratoxigenic Penicillium nordicum under dry-cured meat environmental and nutritional conditions. Fungal Biol 2020; 125:134-142. [PMID: 33518203 DOI: 10.1016/j.funbio.2020.03.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 03/05/2020] [Accepted: 03/12/2020] [Indexed: 12/27/2022]
Abstract
The environmental conditions during the ripening of dry-cured meats and their nutritional composition promote the colonisation of their surface by Penicillium spp., including P. nordicum producer of ochratoxin A (OTA). The objective of this work was to study the competitiveness of three potential biocontrol candidates (Debaryomyces hansenii FHSCC 253H, Enterococcus faecium SE920 and Penicillium chrysogenum CECT, 20922) against the ochratoxigenic P. nordicum FHSCC4 under environmental and nutritional conditions simulating the ripening of dry-cured meat products. For this, the nutritional utilisation pattern, niche overlap index (NOI), interactions by dual-culture assays and OTA production were determined. The number of carbon sources (CSs) metabolised depended on the microorganism and the interacting water activity (aw) x temperature conditions. The number of CSs utilised by both filamentous fungi was quite similar and higher than those utilised by D. hansenii and E. faecium. The yeast isolate metabolised a number of CSs much larger than the bacterium. The NOI values showed that, in general, P. nordicum nutritionally dominated E. faecium and D. hansenii regardless of the environmental conditions evaluated. The relationship between the toxigenic and non-toxigenic fungal isolates depended on the aw x temperature combinations, although in none of the conditions a dominance of P. nordicum was observed. According to the interaction assays, both D. hansenii and P. chrysogenum decreased the growth of P. nordicum. The effect of D. hansenii could be attributed to the production of some extra-cellular compounds, while the action of P. chrysogenum is likely related to nutritional competition. In addition, both P. chrysogenum and D. hansenii reduced the OTA levels produced by P. nordicum. The effect of the yeast was more pronounced decreasing the concentration of OTA at quantities lower than the limit established by the Italian legislation. Therefore, P. chrysogenum and D. hansenii can be suggested as biocontrol candidates in the manufacture of dry-cured meat products.
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Cebrián E, Rodríguez M, Peromingo B, Bermúdez E, Núñez F. Efficacy of the Combined Protective Cultures of Penicillium chrysogenum and Debaryomyces hansenii for the Control of Ochratoxin A Hazards in Dry-Cured Ham. Toxins (Basel) 2019; 11:E710. [PMID: 31817538 PMCID: PMC6950578 DOI: 10.3390/toxins11120710] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 11/28/2019] [Accepted: 12/03/2019] [Indexed: 12/14/2022] Open
Abstract
The ecological conditions during the ripening of dry-cured ham favour the development of moulds on its surface, being frequently the presence of Penicillium nordicum, a producer of ochratoxin A (OTA). Biocontrol using moulds and yeasts usually found in dry-cured ham is a promising strategy to minimize this hazard. The aim of this work is to evaluate the effect of previously selected Debaryomyces hansenii and Penicillium chrysogenum strains on growth, OTA production, and relative expression of genes involved in the OTA biosynthesis by P. nordicum. P. nordicum was inoculated against the protective cultures individually and combined on dry-cured ham for 21 days at 20 °C. None of the treatments reduced the growth of P. nordicum, but all of them decreased OTA concentration. The lower production of OTA could be related to significant repression of the relative expression of otapksPN and otanpsPN genes of P. nordicum. The efficacy of the combined protective cultures was tested in 24 dry-cured hams in industrial ripening (an 8 month-long production). OTA was detected in nine of the 12 dry-cured hams in the batch inoculated only with P. nordicum. However, in the batch inoculated with both P. nordicum and the combined protective culture, a considerable reduction of OTA contamination was observed. In conclusion, although the efficacy of individual use P. chrysogenum is great, the combination with D. hansenii enhances its antifungal activity and could be proposed as a mixed protective culture to control the hazard of the presence of OTA in dry-cured ham.
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Affiliation(s)
| | - Mar Rodríguez
- Food Hygiene and Safety, Meat and Meat Products Research Institute, Faculty of Veterinary Science, University of Extremadura, Avda. de las Ciencias, s/n, 10003 Cáceres, Spain; (E.C.); (B.P.); (E.B.); (F.N.)
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