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Zhu H, Hu L, Rozhkova T, Wang X, Li C. Spectrophotometric analysis of bioactive metabolites and fermentation optimisation of Streptomyces sp. HU2014 with antifungal potential against Rhizoctonia solani. BIOTECHNOL BIOTEC EQ 2023. [DOI: 10.1080/13102818.2023.2178822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Affiliation(s)
- Hongxia Zhu
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, Henan, China
- Plant Protection and Quarantine Department, Sumy National Agrarian University, Sumy, Sumy State, Ukraine
| | - Linfeng Hu
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, Henan, China
| | - Tetiana Rozhkova
- Plant Protection and Quarantine Department, Sumy National Agrarian University, Sumy, Sumy State, Ukraine
| | - Xinfa Wang
- School of Chemistry and Chemical Engineering, Henan Institute of Science and Technology, Xinxiang, Henan, China
- Plant Protection and Quarantine Department, Sumy National Agrarian University, Sumy, Sumy State, Ukraine
| | - Chengwei Li
- College of Biological Engineering, Henan University of Technology, Zhengzhou, Henan, China
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Liu L, Fisher KD, Friest MA, Gerard G. Characterization and Antifungal Activity of Lemongrass Essential Oil-Loaded Nanoemulsion Stabilized by Carboxylated Cellulose Nanofibrils and Surfactant. Polymers (Basel) 2023; 15:3946. [PMID: 37835998 PMCID: PMC10575251 DOI: 10.3390/polym15193946] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 09/25/2023] [Accepted: 09/28/2023] [Indexed: 10/15/2023] Open
Abstract
Nanocellulose is an emerging green, biodegradable and biocompatible nanomaterial with negligible toxicities. In this study, a carboxylated nanocellulose (i.e., 2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPO)-oxidized cellulose nanofibril (TEMPO-CNF)) was prepared from corn stover and characterized by X-ray diffraction (XRD), Fourier Transform Infrared Spectroscopy (FTIR) and differential scanning calorimetry (DSC)/thermogravimetric analysis (TGA). Corn stover-derived TEMPO-CNF was explored as an emulsion co-stabilizer together with Tween 80 for lemongrass essential oil-loaded emulsions. Droplet size, phase behavior and thermodynamic stability of oil-in-water emulsions stabilized by Tween 80 and TEMPO-CNF were investigated. The optimal nanoemulsion stabilized by this binary stabilizer could achieve a mean particle size of 19 nm, and it did not form any phase separation against centrifugal forces, freeze-thaw cycles and at least 30 days of room temperature storage. The nanoencapsulated essential oil had better inhibition activity against the mycelial growth of Aspergillus flavus than pure essential oil. Results from this study demonstrate the potential of using agricultural byproduct-derived nanomaterial as nanoemulsion stabilizers for essential oils with good emulsion thermodynamic stability as well as enhanced antifungal activities.
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Affiliation(s)
- Lingling Liu
- Department of Agricultural and Biosystems Engineering, Iowa State University, Ames, IA 50010, USA
| | - Kaleb D. Fisher
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA 50010, USA
| | - Mason A. Friest
- Department of Mechanical Engineering, Iowa State University, Ames, IA 50010, USA;
| | - Gina Gerard
- Department of Food Science and Human Nutrition, Iowa State University, Ames, IA 50010, USA
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3
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Saberi Riseh R, Hassanisaadi M, Vatankhah M, Kennedy JF. Encapsulating biocontrol bacteria with starch as a safe and edible biopolymer to alleviate plant diseases: A review. Carbohydr Polym 2023; 302:120384. [PMID: 36604062 DOI: 10.1016/j.carbpol.2022.120384] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/17/2022] [Accepted: 11/18/2022] [Indexed: 11/23/2022]
Abstract
Healthy foods with few artificial additives are in high demand among consumers. Preserving conventional pesticides, frequently used as chemicals to control phytopathogens, is challenging. Therefore, we proposed an innovative approach to protect agricultural products in this review. Biocontrol bacteria are safe alternatives with low stability and low efficiency in the free-form formulation. The encapsulation technique for covering active compounds (e.g., antimicrobials) represents a more efficient protection technology because encapsulation causes the controlled release of bioactive materials and reduces the application doses. Of the biopolymers able to form a capsule, starch exhibits several advantages, such as its ready availability, cost-effectively, edible, colorless, and tasteless. Nevertheless, the poor mechanical properties of starch can be improved with other edible biopolymers. In addition, applying formulations incorporated with more than one antimicrobial material offers synergistic effects. This review presented the starch-based capsules used to enclose antimicrobial agents as effective tools against phytopathogens.
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Affiliation(s)
- Roohallah Saberi Riseh
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Imam Khomeini Square, Rafsanjan 7718897111, Iran.
| | - Mohadeseh Hassanisaadi
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Imam Khomeini Square, Rafsanjan 7718897111, Iran; Department of Plant Protection, Faculty of Agriculture, Shahid Bahonar University of Kerman, 7618411764 Kerman, Iran
| | - Masoumeh Vatankhah
- Department of Plant Protection, Faculty of Agriculture, Vali-e-Asr University of Rafsanjan, Imam Khomeini Square, Rafsanjan 7718897111, Iran
| | - John F Kennedy
- Chembiotech Laboratories Ltd, WR15 8FF Tenbury Wells, United Kingdom.
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4
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Kumar P, Gupta A, Mahato DK, Pandhi S, Pandey AK, Kargwal R, Mishra S, Suhag R, Sharma N, Saurabh V, Paul V, Kumar M, Selvakumar R, Gamlath S, Kamle M, Enshasy HAE, Mokhtar JA, Harakeh S. Aflatoxins in Cereals and Cereal-Based Products: Occurrence, Toxicity, Impact on Human Health, and Their Detoxification and Management Strategies. Toxins (Basel) 2022; 14:toxins14100687. [PMID: 36287956 PMCID: PMC9609140 DOI: 10.3390/toxins14100687] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/27/2022] [Accepted: 09/28/2022] [Indexed: 11/08/2022] Open
Abstract
Cereals and cereal-based products are primary sources of nutrition across the world. However, contamination of these foods with aflatoxins (AFs), secondary metabolites produced by several fungal species, has raised serious concerns. AF generation in innate substrates is influenced by several parameters, including the substrate type, fungus species, moisture content, minerals, humidity, temperature, and physical injury to the kernels. Consumption of AF-contaminated cereals and cereal-based products can lead to both acute and chronic health issues related to physical and mental maturity, reproduction, and the nervous system. Therefore, the precise detection methods, detoxification, and management strategies of AFs in cereal and cereal-based products are crucial for food safety as well as consumer health. Hence, this review provides a brief overview of the occurrence, chemical characteristics, biosynthetic processes, health hazards, and detection techniques of AFs, along with a focus on detoxification and management strategies that could be implemented for food safety and security.
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Affiliation(s)
- Pradeep Kumar
- Department of Botany, University of Lucknow, Lucknow 226007, India
- Applied Microbiology Laboratory, Department of Forestry, North Eastern Regional Institute of Science and Technology, Nirjuli 791109, India
- Correspondence: (P.K.); (D.K.M.)
| | - Akansha Gupta
- Department of Dairy Science and Food Technology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
- CASS Food Research Centre, School of Exercise and Nutrition Sciences, Deakin University, Burwood, VIC 3125, Australia
| | - Dipendra Kumar Mahato
- CASS Food Research Centre, School of Exercise and Nutrition Sciences, Deakin University, Burwood, VIC 3125, Australia
- Correspondence: (P.K.); (D.K.M.)
| | - Shikha Pandhi
- Department of Dairy Science and Food Technology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Arun Kumar Pandey
- MMICT&BM(HM), Maharishi Markandeshwar (Deemed to be University), Mullana, Ambala 133207, India
| | - Raveena Kargwal
- Department of Processing and Food Engineering, College of Agricultural Engineering and Technology, Chaudhary Charan Singh Haryana Agricultural University, Hisar 125004, India
| | - Sadhna Mishra
- Department of Dairy Science and Food Technology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
- Faculty of Agricultural Sciences, GLA University, Mathura 281406, India
| | - Rajat Suhag
- Faculty of Science and Technology, Free University of Bozen-Bolzano, Piazza Università 5, 39100 Bolzano, Italy
| | - Nitya Sharma
- Food and Bioprocess Engineering Laboratory, Centre for Rural Development and Technology, Indian Institute of Technology Delhi, New Delhi 110016, India
| | - Vivek Saurabh
- Division of Food Science and Postharvest Technology, ICAR—Indian Agricultural Research Institute, New Delhi 110012, India
| | - Veena Paul
- Department of Dairy Science and Food Technology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi 221005, India
| | - Manoj Kumar
- Chemical and Biochemical Processing Division, ICAR—Central Institute for Research on Cotton Technology, Mumbai 400019, India
| | - Raman Selvakumar
- Centre for Protected Cultivation Technology, ICAR-Indian Agricultural Research Institute, Pusa Campus, New Delhi 110012, India
| | - Shirani Gamlath
- CASS Food Research Centre, School of Exercise and Nutrition Sciences, Deakin University, Burwood, VIC 3125, Australia
| | - Madhu Kamle
- Applied Microbiology Laboratory, Department of Forestry, North Eastern Regional Institute of Science and Technology, Nirjuli 791109, India
| | - Hesham Ali El Enshasy
- Institute of Bioproduct Development, Universiti Teknologi Malaysia (UTM), Skudai 81310, Malaysia
- City of Scientific Research and Technology Applications, New Burg Al Arab, Alexandria 21934, Egypt
| | - Jawahir A. Mokhtar
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University Hospital, Jeddah 21589, Saudi Arabia
- Vaccines and Immunotherapy Unit, King Fahad Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Steve Harakeh
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Yousef Abdul Latif Jameel Scientific Chair of Prophetic Medicine Application, Faculty of Medicine (FM), King Abdulaziz University, Jeddah 21589, Saudi Arabia
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de Borba MC, Velho AC, de Freitas MB, Holvoet M, Maia-Grondard A, Baltenweck R, Magnin-Robert M, Randoux B, Hilbert JL, Reignault P, Hugueney P, Siah A, Stadnik MJ. A Laminarin-Based Formulation Protects Wheat Against Zymoseptoria tritici via Direct Antifungal Activity and Elicitation of Host Defense-Related Genes. PLANT DISEASE 2022; 106:1408-1418. [PMID: 34978870 DOI: 10.1094/pdis-08-21-1675-re] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The present study aimed to evaluate the potential of the laminarin-based formulation Vacciplant to protect and induce resistance in wheat against Zymoseptoria tritici, a major pathogen on this crop. Under greenhouse conditions, a single foliar spraying of the product 2 days before inoculation with Z. tritici reduced disease severity and pycnidium density by 42 and 45%, respectively. Vacciplant exhibited a direct antifungal activity on Z. tritici conidial germination both in vitro and in planta. Moreover, it reduced in planta substomatal colonization as well as pycnidium formation on treated leaves. Molecular investigations revealed that Vacciplant elicits but did not prime the expression of several wheat genes related to defense pathways, including phenylpropanoids (phenylalanine ammonia-lyase and chalcone synthase), octadecanoids (lipoxygenase and allene oxide synthase), and pathogenesis-related proteins (β-1,3-endoglucanase and chitinase). By contrast, it did not modulate the expression of oxalate oxidase gene involved in the reactive oxygen species metabolism. Ultrahigh-performance liquid chromatography-mass spectrometry analysis indicated limited changes in leaf metabolome after product application in both noninoculated and inoculated conditions, suggesting a low metabolic cost associated with induction of plant resistance. This study provides evidence that the laminarin-based formulation confers protection to wheat against Z. tritici through direct antifungal activity and elicitation of plant defense-associated genes.
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Affiliation(s)
- Marlon C de Borba
- Federal University of Santa Catarina, Agricultural Science Center (UFSC-CCA), Laboratory of Plant Pathology, Rod. Admar Gonzaga 1346, 88034-001 Florianópolis-SC, Brazil
- Joint Research Unit Number 1158 BioEcoAgro, Junia, Université de Lille, Université Liège, UPJV, Université d'Artois, ULCO, INRAE, 2 Rue Norbert Ségard, BP 41290, F-59014 Lille Cedex, France
| | - Aline C Velho
- Federal University of Santa Catarina, Agricultural Science Center (UFSC-CCA), Laboratory of Plant Pathology, Rod. Admar Gonzaga 1346, 88034-001 Florianópolis-SC, Brazil
- Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), CS 80699, F-62228 Calais Cedex, France
| | - Mateus B de Freitas
- Federal University of Santa Catarina, Agricultural Science Center (UFSC-CCA), Laboratory of Plant Pathology, Rod. Admar Gonzaga 1346, 88034-001 Florianópolis-SC, Brazil
- Joint Research Unit Number 1158 BioEcoAgro, Junia, Université de Lille, Université Liège, UPJV, Université d'Artois, ULCO, INRAE, 2 Rue Norbert Ségard, BP 41290, F-59014 Lille Cedex, France
| | - Maxime Holvoet
- Joint Research Unit Number 1158 BioEcoAgro, Junia, Université de Lille, Université Liège, UPJV, Université d'Artois, ULCO, INRAE, 2 Rue Norbert Ségard, BP 41290, F-59014 Lille Cedex, France
| | | | | | - Maryline Magnin-Robert
- Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), CS 80699, F-62228 Calais Cedex, France
| | - Béatrice Randoux
- Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), CS 80699, F-62228 Calais Cedex, France
| | - Jean-Louis Hilbert
- Joint Research Unit Number 1158 BioEcoAgro, Junia, Université de Lille, Université Liège, UPJV, Université d'Artois, ULCO, INRAE, 2 Rue Norbert Ségard, BP 41290, F-59014 Lille Cedex, France
| | - Philippe Reignault
- Université du Littoral Côte d'Opale, Unité de Chimie Environnementale et Interactions sur le Vivant (EA 4492), CS 80699, F-62228 Calais Cedex, France
| | - Philippe Hugueney
- Université de Strasbourg, INRAE, SVQV UMR-A1131, 68000 Colmar, France
| | - Ali Siah
- Joint Research Unit Number 1158 BioEcoAgro, Junia, Université de Lille, Université Liège, UPJV, Université d'Artois, ULCO, INRAE, 2 Rue Norbert Ségard, BP 41290, F-59014 Lille Cedex, France
| | - Marciel J Stadnik
- Federal University of Santa Catarina, Agricultural Science Center (UFSC-CCA), Laboratory of Plant Pathology, Rod. Admar Gonzaga 1346, 88034-001 Florianópolis-SC, Brazil
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Vlajkov V, Grahovac M, Budakov D, Loc M, Pajčin I, Milić D, Novaković T, Grahovac J. Distribution, Genetic Diversity and Biocontrol of Aflatoxigenic Aspergillus flavus in Serbian Maize Fields. Toxins (Basel) 2021; 13:toxins13100687. [PMID: 34678980 PMCID: PMC8540170 DOI: 10.3390/toxins13100687] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/04/2021] [Accepted: 08/04/2021] [Indexed: 11/16/2022] Open
Abstract
Maize is one of the leading export products in the Republic of Serbia. As a country where economic development depends on agriculture, maize production plays a critical role as a crop of strategic importance. Potential aflatoxin contamination of maize poses a risk to food and feed safety and tremendous economic losses. No aflatoxin contamination of maize samples harvested in 2019 and 2020 in different localities in the Republic of Serbia was detected by the Enzyme-Linked Immunosorbent Assay (ELISA) test and High-Performance Liquid Chromatography (HPLC) method. On the other hand, the Cluster Amplification Patterns (CAP) analyses of the isolated Aspergillus flavus strains from 2019 maize samples confirmed the presence of key biosynthesis genes responsible for aflatoxin production. Artificial inoculation and subsequent HPLC analysis of the inoculated maize samples confirmed the high capacity of the A. flavus strains for aflatoxin production, pointing to a high risk of contamination under favorable conditions. Prevention of aflatoxin contamination is primarily based on A. flavus control, where biocontrol agents play a significant role as sustainable disease management tools. In this study, antagonistic activity screening of the novel strains belonging to the Bacillus genus indicated superior suppression of A. flavus strains by two Bacillus strains isolated from the rhizosphere of Phaseolus vulgaris.
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Affiliation(s)
- Vanja Vlajkov
- Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia; (I.P.); (J.G.)
- Correspondence: (V.V.); (M.G.)
| | - Mila Grahovac
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia; (D.B.); (M.L.); (D.M.); (T.N.)
- Correspondence: (V.V.); (M.G.)
| | - Dragana Budakov
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia; (D.B.); (M.L.); (D.M.); (T.N.)
| | - Marta Loc
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia; (D.B.); (M.L.); (D.M.); (T.N.)
| | - Ivana Pajčin
- Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia; (I.P.); (J.G.)
| | - Dragan Milić
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia; (D.B.); (M.L.); (D.M.); (T.N.)
| | - Tihomir Novaković
- Faculty of Agriculture, University of Novi Sad, Trg Dositeja Obradovića 8, 21000 Novi Sad, Serbia; (D.B.); (M.L.); (D.M.); (T.N.)
| | - Jovana Grahovac
- Faculty of Technology, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia; (I.P.); (J.G.)
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Fumagalli F, Ottoboni M, Pinotti L, Cheli F. Integrated Mycotoxin Management System in the Feed Supply Chain: Innovative Approaches. Toxins (Basel) 2021; 13:572. [PMID: 34437443 PMCID: PMC8402322 DOI: 10.3390/toxins13080572] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/13/2021] [Accepted: 08/13/2021] [Indexed: 12/24/2022] Open
Abstract
Exposure to mycotoxins is a worldwide concern as their occurrence is unavoidable and varies among geographical regions. Mycotoxins can affect the performance and quality of livestock production and act as carriers putting human health at risk. Feed can be contaminated by various fungal species, and mycotoxins co-occurrence, and modified and emerging mycotoxins are at the centre of modern mycotoxin research. Preventing mould and mycotoxin contamination is almost impossible; it is necessary for producers to implement a comprehensive mycotoxin management program to moderate these risks along the animal feed supply chain in an HACCP perspective. The objective of this paper is to suggest an innovative integrated system for handling mycotoxins in the feed chain, with an emphasis on novel strategies for mycotoxin control. Specific and selected technologies, such as nanotechnologies, and management protocols are reported as promising and sustainable options for implementing mycotoxins control, prevention, and management. Further research should be concentrated on methods to determine multi-contaminated samples, and emerging and modified mycotoxins.
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Affiliation(s)
- Francesca Fumagalli
- Department of Health, Animal Science and Food Safety, “Carlo Cantoni” University of Milan, 20134 Milan, Italy; (M.O.); (L.P.); (F.C.)
| | - Matteo Ottoboni
- Department of Health, Animal Science and Food Safety, “Carlo Cantoni” University of Milan, 20134 Milan, Italy; (M.O.); (L.P.); (F.C.)
| | - Luciano Pinotti
- Department of Health, Animal Science and Food Safety, “Carlo Cantoni” University of Milan, 20134 Milan, Italy; (M.O.); (L.P.); (F.C.)
- CRC I-WE (Coordinating Research Centre: Innovation for Well-Being and Environment), University of Milan, 20134 Milan, Italy
| | - Federica Cheli
- Department of Health, Animal Science and Food Safety, “Carlo Cantoni” University of Milan, 20134 Milan, Italy; (M.O.); (L.P.); (F.C.)
- CRC I-WE (Coordinating Research Centre: Innovation for Well-Being and Environment), University of Milan, 20134 Milan, Italy
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Predicted Aflatoxin B 1 Increase in Europe Due to Climate Change: Actions and Reactions at Global Level. Toxins (Basel) 2021; 13:toxins13040292. [PMID: 33924246 PMCID: PMC8074758 DOI: 10.3390/toxins13040292] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 04/16/2021] [Accepted: 04/18/2021] [Indexed: 02/07/2023] Open
Abstract
Climate change (CC) is predicted to increase the risk of aflatoxin (AF) contamination in maize, as highlighted by a project supported by EFSA in 2009. We performed a comprehensive literature search using the Scopus search engine to extract peer-reviewed studies citing this study. A total of 224 papers were identified after step I filtering (187 + 37), while step II filtering identified 25 of these papers for quantitative analysis. The unselected papers (199) were categorized as “actions” because they provided a sounding board for the expected impact of CC on AFB1 contamination, without adding new data on the topic. The remaining papers were considered as “reactions” of the scientific community because they went a step further in their data and ideas. Interesting statements taken from the “reactions” could be summarized with the following keywords: Chain and multi-actor approach, intersectoral and multidisciplinary, resilience, human and animal health, and global vision. In addition, fields meriting increased research efforts were summarized as the improvement of predictive modeling; extension to different crops and geographic areas; and the impact of CC on fungi and mycotoxin co-occurrence, both in crops and their value chains, up to consumers.
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Majumdar R, Kandel SL, Cary JW, Rajasekaran K. Changes in Bacterial Endophyte Community Following Aspergillus flavus Infection in Resistant and Susceptible Maize Kernels. Int J Mol Sci 2021; 22:ijms22073747. [PMID: 33916873 PMCID: PMC8038446 DOI: 10.3390/ijms22073747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 03/31/2021] [Accepted: 04/01/2021] [Indexed: 01/10/2023] Open
Abstract
Aspergillus flavus (A. flavus)-mediated aflatoxin contamination in maize is a major global economic and health concern. As A. flavus is an opportunistic seed pathogen, the identification of factors contributing to kernel resistance will be of great importance in the development of novel mitigation strategies. Using V3–V4 bacterial rRNA sequencing and seeds of A. flavus-resistant maize breeding lines TZAR102 and MI82 and a susceptible line, SC212, we investigated kernel-specific changes in bacterial endophytes during infection. A total of 81 bacterial genera belonging to 10 phyla were detected. Bacteria belonging to the phylum Tenericutes comprised 86–99% of the detected phyla, followed by Proteobacteria (14%) and others (<5%) that changed with treatments and/or genotypes. Higher basal levels (without infection) of Streptomyces and Microbacterium in TZAR102 and increases in the abundance of Stenotrophomonas and Sphingomonas in MI82 following infection may suggest their role in resistance. Functional profiling of bacteria using 16S rRNA sequencing data revealed the presence of bacteria associated with the production of putative type II polyketides and sesquiterpenoids in the resistant vs. susceptible lines. Future characterization of endophytes predicted to possess antifungal/ anti-aflatoxigenic properties will aid in their development as effective biocontrol agents or microbiome markers for maize aflatoxin resistance.
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Kaale L, Kimanya M, Macha I, Mlalila N. Aflatoxin contamination and recommendations to improve its control: a review. WORLD MYCOTOXIN J 2021. [DOI: 10.3920/wmj2020.2599] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Aflatoxin producing fungi cause contamination of food and feed resulting in health hazards and economic loss. It is imperative to develop workable control measures throughout the food chain to prevent and reduce aflatoxin contamination. This is a critical review of contemporary published papers in the field. It is a review of reports from the original aflatoxin researches conducted on foods, from 2015-2020. Most of the reports show high aflatoxin contaminations in food at levels that exceed a regulatory limit of 20 μg/kg and 4 μg/kg set for foods for human consumption in the USA and European Union, respectively. The highest aflatoxin concentration (3,760 μg/kg) was observed in maize. Some of the strategies being deployed in aflatoxin control include application of biocontrol agents, specifically of Aflasafe™, development of resistant crop varieties, and application of other good agricultural practices. We recommend the adoption of emerging technologies such as combined methods technology (CMT) or hurdle technology, one health concept (OHC), improved regulations, on-line monitoring of aflatoxins, and creative art intervention (CAI) to prevent or restrict the growth of target aflatoxin causative fungi.
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Affiliation(s)
- L.D. Kaale
- University of Dar es Salaam (UDSM), Department of Food Science and Technology, P.O. Box 35134, Dar es Salaam, Tanzania
| | - M.E. Kimanya
- School of Life Sciences and Bioengineering, Nelson Mandela African Institution of Science and Technology, P.O. Box 447, Arusha, Tanzania
| | - I.J. Macha
- University of Dar es Salaam (UDSM), Department of Mechanical and Industrial Engineering, P.O. Box 35131, Dar es Salaam, Tanzania
| | - N. Mlalila
- University of Dar es Salaam (UDSM), Department of Food Science and Technology, P.O. Box 35134, Dar es Salaam, Tanzania
- Ministry of Livestock and Fisheries, P.O. Box 2847, Dodoma, Tanzania
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Peles F, Sipos P, Kovács S, Győri Z, Pócsi I, Pusztahelyi T. Biological Control and Mitigation of Aflatoxin Contamination in Commodities. Toxins (Basel) 2021; 13:toxins13020104. [PMID: 33535580 PMCID: PMC7912779 DOI: 10.3390/toxins13020104] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/23/2021] [Accepted: 01/29/2021] [Indexed: 11/16/2022] Open
Abstract
Aflatoxins (AFs) are toxic secondary metabolites produced mostly by Aspergillus species. AF contamination entering the feed and food chain has been a crucial long-term issue for veterinarians, medicals, agroindustry experts, and researchers working in this field. Although different (physical, chemical, and biological) technologies have been developed, tested, and employed to mitigate the detrimental effects of mycotoxins, including AFs, universal methods are still not available to reduce AF levels in feed and food in the last decades. Possible biological control by bacteria, yeasts, and fungi, their excretes, the role of the ruminal degradation, pre-harvest biocontrol by competitive exclusion or biofungicides, and post-harvest technologies and practices based on biological agents currently used to alleviate the toxic effects of AFs are collected in this review. Pre-harvest biocontrol technologies can give us the greatest opportunity to reduce AF production on the spot. Together with post-harvest applications of bacteria or fungal cultures, these technologies can help us strictly reduce AF contamination without synthetic chemicals.
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Affiliation(s)
- Ferenc Peles
- Institute of Food Science, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi str. 138, H-4032 Debrecen, Hungary;
| | - Péter Sipos
- Institute of Nutrition, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi str. 138, H-4032 Debrecen, Hungary; (P.S.); (Z.G.)
| | - Szilvia Kovács
- Central Laboratory of Agricultural and Food Products, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi str. 138, H-4032 Debrecen, Hungary;
| | - Zoltán Győri
- Institute of Nutrition, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi str. 138, H-4032 Debrecen, Hungary; (P.S.); (Z.G.)
| | - István Pócsi
- Department of Molecular Biotechnology and Microbiology, Institute of Biotechnology, Faculty of Science and Technology, University of Debrecen, Egyetem Square 1, H-4032 Debrecen, Hungary;
| | - Tünde Pusztahelyi
- Central Laboratory of Agricultural and Food Products, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, Böszörményi str. 138, H-4032 Debrecen, Hungary;
- Correspondence: ; Tel.: +36-20-210-9491
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Dövényi-Nagy T, Rácz C, Molnár K, Bakó K, Szláma Z, Jóźwiak Á, Farkas Z, Pócsi I, Dobos AC. Pre-Harvest Modelling and Mitigation of Aflatoxins in Maize in a Changing Climatic Environment-A Review. Toxins (Basel) 2020; 12:E768. [PMID: 33291729 PMCID: PMC7761929 DOI: 10.3390/toxins12120768] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 11/25/2020] [Accepted: 12/02/2020] [Indexed: 01/13/2023] Open
Abstract
Aflatoxins (AFs) are harmful secondary metabolites produced by various moulds, among which Aspergillus flavus is the major AF-producer fungus. These mycotoxins have carcinogenic or acute toxigenic effects on both humans and food producing animals and, therefore, the health risks and also the potential economic damages mounted by them have led to legal restrictions, and several countries have set maximum allowable limits for AF contaminations in food and feed. While colonization of food and feed and AF production by A. flavus are highly supported by the climatic conditions in tropical and subtropical geographic regions, countries in the temperate climate zones are also increasingly exposed to AF-derived health risks due to climate change. In the present study, we have reviewed the available mathematical models as risk assessment tools to predict the possibility of A. flavus infection and levels of AF contaminations in maize in a changing climatic environment. After highlighting the benefits and possible future improvements of these models, we summarize the current agricultural practices used to prevent or, at least, mitigate the deleterious consequences of AF contaminations.
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Affiliation(s)
- Tamás Dövényi-Nagy
- Agrometeorological and Agroecological Monitoring Centre, AKIT-DTTI, University of Debrecen, H4032 Debrecen, Hungary; (C.R.); (K.M.); (K.B.); (Z.S.); (A.C.D.)
| | - Csaba Rácz
- Agrometeorological and Agroecological Monitoring Centre, AKIT-DTTI, University of Debrecen, H4032 Debrecen, Hungary; (C.R.); (K.M.); (K.B.); (Z.S.); (A.C.D.)
| | - Krisztina Molnár
- Agrometeorological and Agroecological Monitoring Centre, AKIT-DTTI, University of Debrecen, H4032 Debrecen, Hungary; (C.R.); (K.M.); (K.B.); (Z.S.); (A.C.D.)
| | - Károly Bakó
- Agrometeorological and Agroecological Monitoring Centre, AKIT-DTTI, University of Debrecen, H4032 Debrecen, Hungary; (C.R.); (K.M.); (K.B.); (Z.S.); (A.C.D.)
| | - Zsombor Szláma
- Agrometeorological and Agroecological Monitoring Centre, AKIT-DTTI, University of Debrecen, H4032 Debrecen, Hungary; (C.R.); (K.M.); (K.B.); (Z.S.); (A.C.D.)
| | - Ákos Jóźwiak
- Digital Food Institute, University of Veterinary Medicine Budapest, H1078 Budapest, Hungary; (Á.J.); (Z.F.)
| | - Zsuzsa Farkas
- Digital Food Institute, University of Veterinary Medicine Budapest, H1078 Budapest, Hungary; (Á.J.); (Z.F.)
| | - István Pócsi
- Department of Molecular Biotechnology and Microbiology, Institute of Biotechnology, Faculty of Science and Technology, University of Debrecen, H4032 Debrecen, Hungary;
| | - Attila Csaba Dobos
- Agrometeorological and Agroecological Monitoring Centre, AKIT-DTTI, University of Debrecen, H4032 Debrecen, Hungary; (C.R.); (K.M.); (K.B.); (Z.S.); (A.C.D.)
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