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Zhang J, Tang X, Cai Y, Zhou WW. Mycotoxin Contamination Status of Cereals in China and Potential Microbial Decontamination Methods. Metabolites 2023; 13:metabo13040551. [PMID: 37110209 PMCID: PMC10143121 DOI: 10.3390/metabo13040551] [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: 02/09/2023] [Revised: 04/05/2023] [Accepted: 04/10/2023] [Indexed: 04/29/2023] Open
Abstract
The presence of mycotoxins in cereals can pose a significant health risk to animals and humans. China is one of the countries that is facing cereal contamination by mycotoxins. Treating mycotoxin-contaminated cereals with established physical and chemical methods can lead to negative effects, such as the loss of nutrients, chemical residues, and high energy consumption. Therefore, microbial detoxification techniques are being considered for reducing and treating mycotoxins in cereals. This paper reviews the contamination of aflatoxins, zearalenone, deoxynivalenol, fumonisins, and ochratoxin A in major cereals (rice, wheat, and maize). Our discussion is based on 8700 samples from 30 provincial areas in China between 2005 and 2021. Previous research suggests that the temperature and humidity in the highly contaminated Chinese cereal-growing regions match the growth conditions of potential antagonists. Therefore, this review takes biological detoxification as the starting point and summarizes the methods of microbial detoxification, microbial active substance detoxification, and other microbial inhibition methods for treating contaminated cereals. Furthermore, their respective mechanisms are systematically analyzed, and a series of strategies for combining the above methods with the treatment of contaminated cereals in China are proposed. It is hoped that this review will provide a reference for subsequent solutions to cereal contamination problems and for the development of safer and more efficient methods of biological detoxification.
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Affiliation(s)
- Jing Zhang
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, Zhejiang University, Hangzhou 310058, China
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Xi Tang
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, Zhejiang University, Hangzhou 310058, China
| | - Yifan Cai
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, Zhejiang University, Hangzhou 310058, China
| | - Wen-Wen Zhou
- College of Biosystems Engineering and Food Science, Ningbo Research Institute, Zhejiang University, Hangzhou 310058, China
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Xue G, Qu Y, Wu D, Huang S, Che Y, Yu J, Song P. Biodegradation of Aflatoxin B 1 in the Baijiu Brewing Process by Bacillus cereus. Toxins (Basel) 2023; 15:65. [PMID: 36668884 PMCID: PMC9860622 DOI: 10.3390/toxins15010065] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/09/2023] [Accepted: 01/09/2023] [Indexed: 01/13/2023] Open
Abstract
Aflatoxin is a potent mycotoxin and a common source of grain contamination that leads to great economic losses and health problems. Although distilled baijiu cannot be contaminated by aflatoxin, its presence in the brewing process affects the physiological activities of micro-organisms and reduces product quality. Bacillus cereus XSWW9 capable of degrading aflatoxin B1 (AFB1) was isolated from daqu using coumarin as the sole carbon source. XSWW9 degraded 86.7% of 1 mg/L AFB1 after incubation at 37 °C for 72 h and tolerated up to 1 mg/L AFB1 with no inhibitory effects. Enzymes in the cell-free supernatant of XSSW9 played a significant role in AFB1 degradation. The AFB1-degradation activity was sensitive to protease K and SDS treatment, which indicated that extracellular proteins were responsible for the degradation of AFB1. In order to investigate the AFB1-degradation ability of XSSW9 during the baijiu brewing process, AFB1 and XSWW9 were added to grain fermentation (FG-T) and normal grain fermentation without AFB1, while normal grain fermentation without AFB1 and XSWW9 was used as a control (FG-C). At the end of the fermentation, 99% AFB1 was degraded in the residue of fermented grains. The differences of microbial communities in the fermented grains showed that there were no significant differences between FG-T and FG-C in the relative abundance of dominant genera. The analysis of volatile compounds of their distillation showed that the contents of skeleton flavor components was similar between FG-T and FG-C. These results offer a basis for the development of effective strategies to reduce the effect of AFB1 on the brewing process and ensure that the production of baijiu is stable.
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Affiliation(s)
| | | | | | | | | | - Jing Yu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Wenyuan Road, Nanjing 210023, China
| | - Ping Song
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Wenyuan Road, Nanjing 210023, China
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3
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Babaee R, Karami-Osboo R, Mirabolfathy M. Evaluation of the use of Ozone, UV-C and Citric acid in reducing aflatoxins in pistachio nut. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2021.104276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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ZHAO C, DONG L, ZHANG F, LUO Y, YANG Z, ZHANG X, LI Z. Screening and characterization of a salt-tolerant aflatoxin B1-degrading strain isolated from Doubanjiang, a Chinese typical red pepper paste. FOOD SCIENCE AND TECHNOLOGY 2022. [DOI: 10.1590/fst.122621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Chi ZHAO
- Institute of Agro-products Processing Science and Technology, People’s Republic of China; College of Resources, Sichuan Agricultural University, People’s Republic of China
| | - Ling DONG
- Institute of Agro-products Processing Science and Technology, People’s Republic of China
| | - Fengju ZHANG
- Institute of Agro-products Processing Science and Technology, People’s Republic of China
| | - Yongliang LUO
- Agriculture, Rural and Forestry Bureau of Pidu District, People’s Republic of China
| | - Zebo YANG
- Institute of Agro-products Processing Science and Technology, People’s Republic of China
| | - Xiaoping ZHANG
- College of Resources, Sichuan Agricultural University, People’s Republic of China
| | - Zhihua LI
- Institute of Agro-products Processing Science and Technology, People’s Republic of China
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Gibellato S, Dalsóquio L, do Nascimento I, Alvarez T. Current and promising strategies to prevent and reduce aflatoxin contamination in grains and food matrices. WORLD MYCOTOXIN J 2021. [DOI: 10.3920/wmj2020.2559] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Mycotoxins are secondary metabolites produced by filamentous fungi that colonise various crops around the world and cause major damage to the agro-industrial sector on a global scale. Considering the estimative of population growth in the next decades, it is of fundamental importance the implementation of practices that help prevent the economics and social impacts of aflatoxin contamination. Even though various approaches have been developed – including physical, chemical and biological approaches – there is not yet one that strikes a balance in terms of safety, food quality and cost, especially when considering large scale application. In this review, we present a compilation of advantages and disadvantages of different strategies for prevention and reduction of aflatoxin contamination. Biological approaches represent the trend in innovations mainly due to their specificity and versatility, since it is possible to consider the utilisation of whole microorganisms, culture supernatants, purified enzymes or even genetic engineering. However, challenges related to improvement of the efficiency of such methods and ensuring safety of treated foods still need to be overcome.
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Affiliation(s)
- S.L. Gibellato
- Graduate Programme in Industrial Biotechnology, Universidade Positivo, Curitiba, Paraná, 81280-330, Brazil
| | - L.F. Dalsóquio
- Bioprocesses and Biotechnology Engineering, Universidade Positivo, Curitiba, Paraná, 81280-330, Brazil
| | - I.C.A. do Nascimento
- Bioprocesses and Biotechnology Engineering, Universidade Positivo, Curitiba, Paraná, 81280-330, Brazil
| | - T.M. Alvarez
- Graduate Programme in Industrial Biotechnology, Universidade Positivo, Curitiba, Paraná, 81280-330, Brazil
- Bioprocesses and Biotechnology Engineering, Universidade Positivo, Curitiba, Paraná, 81280-330, Brazil
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Preventive Measures and Control of Mycotoxins. Fungal Biol 2021. [DOI: 10.1007/978-3-030-60659-6_17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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7
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Yamada M, Hatsuta K, Niikawa M, Imaishi H. Detoxification of Aflatoxin B1 Contaminated Maize Using Human CYP3A4. J Microbiol Biotechnol 2020; 30:1207-1213. [PMID: 32423188 PMCID: PMC9728267 DOI: 10.4014/jmb.2003.03032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Accepted: 05/11/2020] [Indexed: 12/15/2022]
Abstract
Aflatoxin B1 (AFB1) is a mycotoxin produced by Aspergillus flavus (A. flavus). AFB1 is reported to have high thermal stability and is not decomposed by heat treatment during food processing. Therefore, in this study, knowing that AFB1 is metabolized by cytochrome P450 (CYP), our aim was to develop a method to detoxify A. flavus-contaminated maize, under normal temperature and pressure, using Escherichia coli expressing human CYP3A4. First, the metabolic activity of AFB1 by recombinant human CYP3A4 was evaluated. As a result, we confirmed that recombinant human CYP3A4 metabolizes 98% of AFB1. Next, we found that aflatoxin Q1, a metabolite of AFB1 was no longer mutagenic. Furthermore, we revealed that about 50% of the AFB1 metabolic activity can be maintained for 3 months when E. coli expressing human CYP3A4 is freeze-dried in the presence of trehalose. Finally, we found that 80% of AFB1 in A. flavus-contaminated maize was metabolized by E. coli expressing human CYP3A4 in the presence of surfactant triton X-405 at a final concentration of 10% (v/v). From these results, we conclude that AFB1 in A. flavus-contaminated maize can be detoxified under normal temperature and pressure by using E. coli expressing human CYP3A4.
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Affiliation(s)
- Marie Yamada
- Division of Signal Responses, Biosignal Research Center, Kobe University, Nada, Kobe 657-8501, Japan
| | - Koji Hatsuta
- Division of Signal Responses, Biosignal Research Center, Kobe University, Nada, Kobe 657-8501, Japan
| | - Mayuko Niikawa
- Division of Signal Responses, Biosignal Research Center, Kobe University, Nada, Kobe 657-8501, Japan
| | - Hiromasa Imaishi
- Division of Signal Responses, Biosignal Research Center, Kobe University, Nada, Kobe 657-8501, Japan,Corresponding author Phone: +81-78-803-5940 Fax: +81-78-803-5940 E-mail:
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Afsah-Hejri L, Hajeb P, Ehsani RJ. Application of ozone for degradation of mycotoxins in food: A review. Compr Rev Food Sci Food Saf 2020; 19:1777-1808. [PMID: 33337096 DOI: 10.1111/1541-4337.12594] [Citation(s) in RCA: 79] [Impact Index Per Article: 19.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 05/07/2020] [Accepted: 05/28/2020] [Indexed: 12/01/2022]
Abstract
Mycotoxins such as aflatoxins (AFs), ochratoxin A (OTA) fumonisins (FMN), deoxynivalenol (DON), zearalenone (ZEN), and patulin are stable at regular food process practices. Ozone (O3 ) is a strong oxidizer and generally considered as a safe antimicrobial agent in food industries. Ozone disrupts fungal cells through oxidizing sulfhydryl and amino acid groups of enzymes or attacks the polyunsaturated fatty acids of the cell wall. Fusarium is the most sensitive mycotoxigenic fungi to ozonation followed by Aspergillus and Penicillium. Studies have shown complete inactivation of Fusarium and Aspergillus by O3 gas. Spore germination and toxin production have also been reduced after ozone fumigation. Both naturally and artificially, mycotoxin-contaminated samples have shown significant mycotoxin reduction after ozonation. Although the mechanism of detoxification is not very clear for some mycotoxins, it is believed that ozone reacts with the functional groups in the mycotoxin molecules, changes their molecular structures, and forms products with lower molecular weight, less double bonds, and less toxicity. Although some minor physicochemical changes were observed in some ozone-treated foods, these changes may or may not affect the use of the ozonated product depending on the further application of it. The effectiveness of the ozonation process depends on the exposure time, ozone concentration, temperature, moisture content of the product, and relative humidity. Due to its strong oxidizing property and corrosiveness, there are strict limits for O3 gas exposure. O3 gas has limited penetration and decomposes quickly. However, ozone treatment can be used as a safe and green technology for food preservation and control of contaminants.
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Affiliation(s)
- Leili Afsah-Hejri
- Mechanical Engineering Department, School of Engineering, University of California Merced, Merced, California
| | - Parvaneh Hajeb
- Department of Environmental Science, Aarhus University, Roskilde, Denmark
| | - Reza J Ehsani
- Mechanical Engineering Department, School of Engineering, University of California Merced, Merced, California
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Mahato DK, Lee KE, Kamle M, Devi S, Dewangan KN, Kumar P, Kang SG. Aflatoxins in Food and Feed: An Overview on Prevalence, Detection and Control Strategies. Front Microbiol 2019; 10:2266. [PMID: 31636616 PMCID: PMC6787635 DOI: 10.3389/fmicb.2019.02266] [Citation(s) in RCA: 146] [Impact Index Per Article: 29.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2019] [Accepted: 09/17/2019] [Indexed: 12/12/2022] Open
Abstract
Aflatoxins produced by the Aspergillus species are highly toxic, carcinogenic, and cause severe contamination to food sources, leading to serious health consequences. Contaminations by aflatoxins have been reported in food and feed, such as groundnuts, millet, sesame seeds, maize, wheat, rice, fig, spices and cocoa due to fungal infection during pre- and post-harvest conditions. Besides these food products, commercial products like peanut butter, cooking oil and cosmetics have also been reported to be contaminated by aflatoxins. Even a low concentration of aflatoxins is hazardous for human and livestock. The identification and quantification of aflatoxins in food and feed is a major challenge to guarantee food safety. Therefore, developing feasible, sensitive and robust analytical methods is paramount for the identification and quantification of aflatoxins present in low concentrations in food and feed. There are various chromatographic and sensor-based methods used for the detection of aflatoxins. The current review provides insight into the sources of contamination, occurrence, detection techniques, and masked mycotoxin, in addition to management strategies of aflatoxins to ensure food safety and security.
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Affiliation(s)
- Dipendra K. Mahato
- School of Exercise and Nutrition Sciences, Deakin University, Burwood, VIC, Australia
| | - Kyung Eun Lee
- Molecular Genetics Laboratory, Department of Biotechnology, Yeungnam University, Gyeongsan, South Korea
| | - Madhu Kamle
- Department of Forestry, North Eastern Regional Institute of Science and Technology, Nirjuli, India
| | | | - Krishna N. Dewangan
- Department of Agricultural Engineering, North Eastern Regional Institute of Science and Technology, Nirjuli, India
| | - Pradeep Kumar
- Department of Forestry, North Eastern Regional Institute of Science and Technology, Nirjuli, India
| | - Sang G. Kang
- Molecular Genetics Laboratory, Department of Biotechnology, Yeungnam University, Gyeongsan, South Korea
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10
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Sun S, Zhao R, Xie Y, Liu Y. Photocatalytic degradation of aflatoxin B1 by activated carbon supported TiO2 catalyst. Food Control 2019. [DOI: 10.1016/j.foodcont.2019.01.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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11
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Shirani K, Zanjani BR, Mahmoudi M, Jafarian AH, Hassani FV, Giesy JP, Karimi G. Immunotoxicity of aflatoxin M 1 : as a potent suppressor of innate and acquired immune systems in a subacute study. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:5884-5892. [PMID: 30014474 DOI: 10.1002/jsfa.9240] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 05/29/2018] [Accepted: 07/04/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Although, to date, there have been several in vitro and in vivo studies of immunomodulatory effects of aflatoxin M1 (AFB1 ), little is known about the effect of AFM1 on various aspects of innate and acquired immunity. In the present study, AFM1 was administered intraperitoneally, at doses of 25 and 50 μg kg-1 , body mass for 28 days and various immunological parameters were measured. RESULTS Several parameters related to immune function were suppressed: organ mass, cellularity of spleen, proliferation response to lipopolysaccaride and phytohemagglutinin-A, hemagglutination titer, delayed type of hypersensitivity response, spleen cell subtypes, serum hemolytic activity, serum immunoglobulin G level and cytokine production. AFM1 did not cause changes in body mass, hematological parameters or the concentration of immunoglobulin M in blood serum. CONCLUSIONS Overall, the data suggested that AFM1 suppressed innate and acquired immunity. Therefore, with respect to consumer safety, it is extremely important to further control the level of AFM1 in milk, and this should be considered as a precedence for risk management actions. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Kobra Shirani
- Department of Pharmacodynamics and Toxicology, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Pharmaceutical Research Center, Department of Pharmacodynamics and Toxicology, School of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Bamdad R Zanjani
- Medical Toxicology Research Center, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Mahmoud Mahmoudi
- Immunology Research Center, School of Medicine, Bu-Ali Research Institute, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Amir H Jafarian
- Cancer Molecular Pathology Research Center, Faculty of Medicine, Ghaem Hospital, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Faezeh V Hassani
- Department of Pharmacodynamics and Toxicology, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
| | - John P Giesy
- Department of Veterinary Biomedical Sciences and Toxicology Centre, University of Saskatchewan, Saskatoon, Canada
- Department of Zoology, Center for Integrative Toxicology, Michigan State University, East Lansing, MI, USA
- School of Biological Sciences, University of Hong Kong, Hong Kong, China
| | - Gholamreza Karimi
- Department of Pharmacodynamics and Toxicology, Faculty of Pharmacy, Mashhad University of Medical Sciences, Mashhad, Iran
- Pharmaceutical Research Center, Institute of Pharmaceutical Technology, Mashhad University of Medical Sciences, Mashhad, Iran
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Jebali R, Ben Salah-Abbès J, Abbès S, Hassan AM, Abdel-Aziem SH, El-Nekeety AA, Oueslati R, Abdel-Wahhab MA. Lactobacillus plantarum alleviate aflatoxins (B 1 and M 1 ) induced disturbances in the intestinal genes expression and DNA fragmentation in mice. Toxicon 2018; 146:13-23. [PMID: 29574215 DOI: 10.1016/j.toxicon.2018.03.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 03/07/2018] [Accepted: 03/20/2018] [Indexed: 01/14/2023]
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13
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Pankaj S, Shi H, Keener KM. A review of novel physical and chemical decontamination technologies for aflatoxin in food. Trends Food Sci Technol 2018. [DOI: 10.1016/j.tifs.2017.11.007] [Citation(s) in RCA: 182] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Xia X, Zhang Y, Li M, Garba B, Zhang Q, Wang Y, Zhang H, Li P. Isolation and characterization of a Bacillus subtilis strain with aflatoxin B 1 biodegradation capability. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.12.036] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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16
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Degradation and detoxification of aflatoxin B 1 using nitrogen gas plasma generated by a static induction thyristor as a pulsed power supply. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.09.014] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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17
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Microbial degradation of aflatoxin B1: Current status and future advances. Int J Food Microbiol 2016; 237:1-9. [DOI: 10.1016/j.ijfoodmicro.2016.07.028] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 07/12/2016] [Accepted: 07/23/2016] [Indexed: 02/07/2023]
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Application of superabsorbent polymers (SAP) as desiccants to dry maize and reduce aflatoxin contamination. Journal of Food Science and Technology 2016; 53:3157-3165. [PMID: 27784910 DOI: 10.1007/s13197-016-2289-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 07/06/2016] [Accepted: 07/13/2016] [Indexed: 01/25/2023]
Abstract
The ability of superabsorbent polymers (SAP) in drying maize and controlling aflatoxin contamination was studied under different temperatures, drying times and SAP-to-maize ratios. Temperature and drying time showed significant influence on the aflatoxin formation. SAP-to-maize ratios between 1:1 and 1:5 showed little or no aflatoxin contamination after drying to the optimal moisture content (MC) of 13 %, while for ratios 1:10 and 1:20, aflatoxin contamination was not well controlled due to the overall higher MC and drying time, which made these ratios unsuitable for the drying process. Results clearly show that temperature, frequency of SAP change, drying time and SAP-to-maize ratio influenced the drying rate and aflatoxin contamination. Furthermore, it was shown that SAP had good potential for grain drying and can be used iteratively, which can make this system an optimal solution to reduce aflatoxin contamination in maize, particular for developing countries and resource-lacking areas.
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20
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Lin Y, Zhou Q, Lin Y, Tang D, Niessner R, Knopp D. Enzymatic Hydrolysate-Induced Displacement Reaction with Multifunctional Silica Beads Doped with Horseradish Peroxidase–Thionine Conjugate for Ultrasensitive Electrochemical Immunoassay. Anal Chem 2015; 87:8531-40. [DOI: 10.1021/acs.analchem.5b02253] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Youxiu Lin
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Qian Zhou
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Yuping Lin
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Dianping Tang
- Key
Laboratory of Analysis and Detection for Food Safety (Ministry of
Education and Fujian Province), Institute of Nanomedicine and Nanobiosensing,
Department of Chemistry, Fuzhou University, Fuzhou 350108, People’s Republic of China
| | - Reinhard Niessner
- Chair
for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistrasse 17, D-81377 München, Germany
| | - Dietmar Knopp
- Chair
for Analytical Chemistry, Institute of Hydrochemistry, Technische Universität München, Marchioninistrasse 17, D-81377 München, Germany
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Bhatnagar-Mathur P, Sunkara S, Bhatnagar-Panwar M, Waliyar F, Sharma KK. Biotechnological advances for combating Aspergillus flavus and aflatoxin contamination in crops. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2015; 234:119-132. [PMID: 25804815 DOI: 10.1016/j.plantsci.2015.02.009] [Citation(s) in RCA: 96] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 02/17/2015] [Accepted: 02/18/2015] [Indexed: 06/04/2023]
Abstract
Aflatoxins are toxic, carcinogenic, mutagenic, teratogenic and immunosuppressive byproducts of Aspergillus spp. that contaminate a wide range of crops such as maize, peanut, and cotton. Aflatoxin not only affects crop production but renders the produce unfit for consumption and harmful to human and livestock health, with stringent threshold limits of acceptability. In many crops, breeding for resistance is not a reliable option because of the limited availability of genotypes with durable resistance to Aspergillus. Understanding the fungal/crop/environment interactions involved in aflatoxin contamination is therefore essential in designing measures for its prevention and control. For a sustainable solution to aflatoxin contamination, research must be focused on identifying and improving knowledge of host-plant resistance factors to aflatoxin accumulation. Current advances in genetic transformation, proteomics, RNAi technology, and marker-assisted selection offer great potential in minimizing pre-harvest aflatoxin contamination in cultivated crop species. Moreover, developing effective phenotyping strategies for transgenic as well as precision breeding of resistance genes into commercial varieties is critical. While appropriate storage practices can generally minimize post-harvest aflatoxin contamination in crops, the use of biotechnology to interrupt the probability of pre-harvest infection and contamination has the potential to provide sustainable solution.
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Affiliation(s)
- Pooja Bhatnagar-Mathur
- Genetic Transformation Laboratory, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502324, Telangana, India.
| | - Sowmini Sunkara
- Genetic Transformation Laboratory, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502324, Telangana, India
| | - Madhurima Bhatnagar-Panwar
- Genetic Transformation Laboratory, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502324, Telangana, India
| | - Farid Waliyar
- Genetic Transformation Laboratory, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502324, Telangana, India
| | - Kiran Kumar Sharma
- Genetic Transformation Laboratory, International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), Patancheru 502324, Telangana, India
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Shcherbakova L, Statsyuk N, Mikityuk O, Nazarova T, Dzhavakhiya V. Aflatoxin B1 Degradation by Metabolites of Phoma glomerata PG41 Isolated From Natural Substrate Colonized by Aflatoxigenic Aspergillus flavus. Jundishapur J Microbiol 2015; 8:e24324. [PMID: 25789135 PMCID: PMC4350041 DOI: 10.5812/jjm.24324] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2014] [Revised: 10/26/2014] [Accepted: 10/31/2014] [Indexed: 11/29/2022] Open
Abstract
Background: Aflatoxin B1 (AFB1), produced by Aspergillus flavus, is one of the most life threatening food contaminants causing significant economic losses worldwide. Biological AFB1 degradation by microorganisms, or preferably microbial enzymes, is considered as one of the most promising approaches. Objectives: The current work aimed to study the AFB1-degrading metabolites, produced by Phoma glomerata PG41, sharing a natural substrate with aflatoxigenic A. flavus, and the preliminary determination of the nature of these metabolites. Materials and Methods: The AFB1-degrading potential of PG41 metabolites was determined by a quantitative high performance liquid chromatography (HPLC) of residual AFB1 after 72 hours incubation at 27ºC. The effects of pH, heat, and protease treatment on the AFB1-destroying activity of extracellular metabolites were examined. Results: The AFB1-degrading activity of protein-enriched fractions, isolated from culture liquid filtrate and cell-free extract, is associated with high-molecular-weight components, is time- and pH-dependent, thermolabile, and is significantly reduced by proteinase K treatment. The AFB1 degradation efficiency of these fractions reaches 78% and 66%, respectively. Conclusions: Phomaglomerata PG41 strain sharing natural substrate with toxigenic A. flavus secretes metabolites possessing a significant aflatoxin-degrading activity. The activity is associated mainly with a protein-enriched high-molecular-weight fraction of extracellular metabolites and appears to be of enzymatic origin.
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Affiliation(s)
- Larisa Shcherbakova
- All-Russian Research Institute of Phytopathology, Bolshie Vyazemy, Moscow Region, Russia
| | - Natalia Statsyuk
- All-Russian Research Institute of Phytopathology, Bolshie Vyazemy, Moscow Region, Russia
- Corresponding author: Natalia Statsyuk, All-Russian Research Institute of Phytopathology, Institute str., Bolshie Vyazemy, 143050 Russia. Tel: +7-9262427241, E-mail:
| | - Oleg Mikityuk
- All-Russian Research Institute of Phytopathology, Bolshie Vyazemy, Moscow Region, Russia
| | - Tatyana Nazarova
- All-Russian Research Institute of Phytopathology, Bolshie Vyazemy, Moscow Region, Russia
| | - Vitaly Dzhavakhiya
- All-Russian Research Institute of Phytopathology, Bolshie Vyazemy, Moscow Region, Russia
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Waliyar F, Osiru M, Ntare B, Kumar KVK, Sudini H, Traore A, Diarra B. Post-harvest management of aflatoxin contamination in groundnut. WORLD MYCOTOXIN J 2015. [DOI: 10.3920/wmj2014.1766] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Aflatoxin contamination in groundnut by Aspergillus section Flavi is a major pre- and post-harvest problem causing kernel-quality loss. Post-harvest aflatoxin contamination is caused initially by infestation of aflatoxigenic strains at the pre-harvest stage, resulting in reduced kernel quality after harvest. Improper handling of pods and storage methods after harvest lead to high moisture and ambient temperatures, directly causing aflatoxin contamination. In this review, we report the extent of post-harvest contamination along the groundnut value chain in the Kolokani, Kayes, and Kita districts of Mali in West Africa. Groundnut kernels and paste samples were collected from retailers in selected markets from December 2010 to June 2011, and aflatoxin B1 (AFB1) content was estimated. Aflatoxin was significantly higher in groundnut paste than in kernels. Kolokani recorded the highest toxin levels in both kernels and groundnut paste compared with the other districts. Overall, AFB1 levels in kernels and paste increased during storage at the market level in the three districts and were above permissible levels (≯20 μg/kg). The effect of weather factors on post-harvest contamination and the reasons for aflatoxin build-up in Mali are discussed. This paper also highlights different management tools for reducing post-harvest aflatoxin contamination, such as post-harvest grain handling, post-harvest machinery, physical separation, storage methods and conditions, disinfestation, detoxification, inactivation, filtration, binding agents, and antifungal compounds. Post-harvest management options and enhanced use of good agricultural practices for mitigating this problem in Mali are also presented.
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Affiliation(s)
- F. Waliyar
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), BP 320, Bamako, Mali
| | - M. Osiru
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), BP 320, Bamako, Mali
| | - B.R. Ntare
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), BP 320, Bamako, Mali
| | | | | | - A. Traore
- International Crops Research Institute for the Semi-Arid Tropics (ICRISAT), BP 320, Bamako, Mali
| | - B. Diarra
- L’Institut d’Economie Rurale (IER), Bamako, Mali
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