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Guo L, Zhang J, Bao Y, Zhang Y, Zhang D, Ma X, Zhang J. Label-free and highly sensitive detection of aflatoxin B 1 by Ag IANPs via surface-enhanced Raman spectroscopy. Food Chem 2024; 458:140231. [PMID: 38959803 DOI: 10.1016/j.foodchem.2024.140231] [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: 03/28/2024] [Revised: 06/18/2024] [Accepted: 06/24/2024] [Indexed: 07/05/2024]
Abstract
Aflatoxin B1 (AFB1), a pernicious constituent of the aflatoxin family, predominantly contaminates cereals, oils, and their derivatives. Acknowledged as a Class I carcinogen by the World Health Organization (WHO), the expeditious and quantitative discernment of AFB1 remains imperative. This investigation delineates that aluminum ions can precipitate the coalescence of iodine-modified silver nanoparticles, thereby engendering hot spots conducive for label-free AFB1 identification via Surface-Enhanced Raman Spectroscopy (SERS). This methodology manifests a remarkable limit of detection (LOD) at 0.47 fg/mL, surpassing the sensitivity thresholds of conventional survey techniques. Moreover, this method has good anti-interference ability, with a relative error of less than 10% and a relative standard deviation of less than 6% in quantitative results. Collectively, these findings illuminate the substantial application potential and viability of this approach in the quantitative analysis of AFB1, underpinning a significant advancement in food safety diagnostics.
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Affiliation(s)
- Liming Guo
- National & Local Joint Engineering Research Center for Deep Utilization Technology of Mineral Salt Resource, and Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Jie Zhang
- National & Local Joint Engineering Research Center for Deep Utilization Technology of Mineral Salt Resource, and Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Ying Bao
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
| | - Yi Zhang
- National & Local Joint Engineering Research Center for Deep Utilization Technology of Mineral Salt Resource, and Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Dexu Zhang
- National & Local Joint Engineering Research Center for Deep Utilization Technology of Mineral Salt Resource, and Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Xiangyu Ma
- National & Local Joint Engineering Research Center for Deep Utilization Technology of Mineral Salt Resource, and Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huai'an 223003, China
| | - Jiadong Zhang
- National & Local Joint Engineering Research Center for Deep Utilization Technology of Mineral Salt Resource, and Key Laboratory for Palygorskite Science and Applied Technology of Jiangsu Province, Huaiyin Institute of Technology, Huai'an 223003, China.
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2
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Živančev J, Bulut S, Kocić-Tanackov S, Jović D, Fišteš A, Antić I, Djordjevic A. The impact of fullerenol nanoparticles on the growth of toxigenic Aspergillus flavus and aflatoxins production in vitro and in corn flour. J Food Sci 2024; 89:1814-1827. [PMID: 38317383 DOI: 10.1111/1750-3841.16952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 12/16/2023] [Accepted: 01/07/2024] [Indexed: 02/07/2024]
Abstract
Antifungal and antimycotoxigenic activity of fullerenol nanoparticles (FNPs) were investigated on Aspergillus flavus growth isolated from a real food sample and aflatoxins (AFs) (AFB1 and AFB2 ) production. The final FNPs concentrations in in vitro and in commercial corn flour after the stationary incubation period of 7 and 14 days were in the range 0.16-80 µg/mL and 0.16-80 µg/g, respectively. Nanocharacterization of FNPs revealed an average size of 5-20 nm and a zeta potential of -35 mV. The highest degree of A. flavus mycelium growth inhibition (28%) after 7 days was observed for applied FNP concentration of 8.0 µg/mL, while after 14 days FNP concentration of 0.32 µg/mL led to the maximal inhibition of A. flavus mycelium growth (36%). Spearman's correlations analysis revealed a strong positive correlation between AFB1 and AFB2 concentrations in YES broth after 7 (R = 0.994, p < 0.05) and 14 days (R = 0.976), as well as between AFs concentrations and A. flavus mycelium mass after 7 (R = 0.786 for AFB1 and R = 0.766 for AFB2 ) and 14 days (R = 0.810 for AFB1 and R = 0.833 for AFB2 ). Paired samples t-test showed the existence of a statistically significant difference (p < 0.05) between the produced AFs concentrations after the incubation of 7 and 14 days. Regarding the artificially inoculated corn flour the lower applied FNP concentrations (0.16-0.8 µg/g) achieved a reduction of AFB1 up to 42% and 60% after 7 and 14 days, respectively.
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Affiliation(s)
- Jelena Živančev
- Faculty of Technology Novi Sad, University of Novi Sad, Novi Sad, Serbia
| | - Sandra Bulut
- Faculty of Technology Novi Sad, University of Novi Sad, Novi Sad, Serbia
| | | | - Danica Jović
- Faculty of Sciences, Department of Chemistry, Biochemistry, and Environmental Protection, University of Novi Sad, Novi Sad, Serbia
| | - Aleksandar Fišteš
- Faculty of Technology Novi Sad, University of Novi Sad, Novi Sad, Serbia
| | - Igor Antić
- Faculty of Technology Novi Sad, University of Novi Sad, Novi Sad, Serbia
| | - Aleksandar Djordjevic
- Faculty of Sciences, Department of Chemistry, Biochemistry, and Environmental Protection, University of Novi Sad, Novi Sad, Serbia
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Liu M, Zhao L, Gong G, Zhang L, Shi L, Dai J, Han Y, Wu Y, Khalil MM, Sun L. Invited review: Remediation strategies for mycotoxin control in feed. J Anim Sci Biotechnol 2022; 13:19. [PMID: 35090579 PMCID: PMC8796454 DOI: 10.1186/s40104-021-00661-4] [Citation(s) in RCA: 63] [Impact Index Per Article: 31.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 11/29/2021] [Indexed: 12/31/2022] Open
Abstract
Mycotoxins are secondary metabolites of different species of fungi. Aflatoxin B1 (AFB1), deoxynivalenol (DON), zearalenone (ZEN) and fumonisin B1 (FB1) are the main mycotoxins contaminating animal feedstuffs. These mycotoxins can primarily induce hepatotoxicity, immunotoxicity, neurotoxicity and nephrotoxicity, consequently cause adverse effects on the health and performance of animals. Therefore, physical, chemical, biological and nutritional regulation approaches have been developed as primary strategies for the decontamination and detoxification of these mycotoxins in the feed industry. Meanwhile, each of these techniques has its drawbacks, including inefficient, costly, or impractically applied on large scale. This review summarized the advantages and disadvantages of the different remediation strategies, as well as updates of the research progress of these strategies for AFB1, DON, ZEN and FB1 control in the feed industry.
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Affiliation(s)
- Meng Liu
- Hubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Ling Zhao
- Hubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Guoxin Gong
- Hubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Lei Zhang
- Hubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Lei Shi
- Hubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China
| | - Jiefan Dai
- Department of Agriculture of Sichuan Province, Chengdu, 610041, China
| | - Yanming Han
- Trouw Nutrition, Amersfoort, The Netherlands
| | - Yuanyuan Wu
- Trouw Nutrition, Amersfoort, The Netherlands
| | - Mahmoud Mohamed Khalil
- Animal Production Department, Faculty of Agriculture, Benha University, Banha, 13736, Egypt
| | - Lvhui Sun
- Hubei Hongshan Laboratory, College of Animal Science and Technology, Huazhong Agricultural University, Wuhan, 430070, Hubei, China.
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4
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N D, Achar PN, Sreenivasa MY. Current Perspectives of Biocontrol Agents for Management of Fusarium verticillioides and Its Fumonisin in Cereals-A Review. J Fungi (Basel) 2021; 7:776. [PMID: 34575814 PMCID: PMC8465378 DOI: 10.3390/jof7090776] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/15/2021] [Accepted: 09/17/2021] [Indexed: 11/27/2022] Open
Abstract
Fusarium verticillioides is the most predominant fungal phytopathogen of cereals and it is posing great concern from a global perspective. The fungus is mainly associated with maize, rice, sorghum, wheat, sugarcane, banana, and asparagus and causes cob, stalk, ear, root, crown, top, and foot rot. F. verticillioides produces fumonisins as the major secondary metabolite along with trace levels of beauvericin, fusaric acid, fusarin C, gibberiliformin, and moniliformin. Being a potential carcinogen, fumonisins continue to receive major attention as they are common contaminants in cereals and its processed food products. The importance of elimination of F. verticillioides growth and its associated fumonisin from cereals cannot be overemphasized considering the significant health hazards associated with its consumption. Physical and chemical approaches have been shown to reduce fumonisin B1 concentrations among feeds and food products but have proved to be ineffective during the production process. Hence, biological control methods using microorganisms, plant extracts, antioxidants, essential oils, phenolic compounds, and other advanced technologies such as growing disease-resistant crops by applying genetic engineering, have become an effective alternative for managing F. verticillioides and its toxin. The different methods, challenges, and concerns regarding the biocontrol of F. verticillioides and production of fumonisin B1 have been addressed in the present review.
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Affiliation(s)
- Deepa N
- Department of Studies in Microbiology, University of Mysore, Mysuru 570 006, Karnataka, India;
| | - Premila N. Achar
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, GA 30144, USA
| | - Marikunte Y. Sreenivasa
- Department of Studies in Microbiology, University of Mysore, Mysuru 570 006, Karnataka, India;
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6
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Liu Y, Galani Yamdeu JH, Gong YY, Orfila C. A review of postharvest approaches to reduce fungal and mycotoxin contamination of foods. Compr Rev Food Sci Food Saf 2020; 19:1521-1560. [DOI: 10.1111/1541-4337.12562] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 03/07/2020] [Accepted: 03/24/2020] [Indexed: 12/15/2022]
Affiliation(s)
- Yue Liu
- Nutritional Science and Epidemiology Group, School of Food Science and NutritionUniversity of Leeds Leeds UK
| | - Joseph Hubert Galani Yamdeu
- Nutritional Science and Epidemiology Group, School of Food Science and NutritionUniversity of Leeds Leeds UK
| | - Yun Yun Gong
- Nutritional Science and Epidemiology Group, School of Food Science and NutritionUniversity of Leeds Leeds UK
| | - Caroline Orfila
- Nutritional Science and Epidemiology Group, School of Food Science and NutritionUniversity of Leeds Leeds UK
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7
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Sun Z, Huang D, Duan X, Hong W, Liang J. Functionalized nanoflower-like hydroxyl magnesium silicate for effective adsorption of aflatoxin B1. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121792. [PMID: 31818670 DOI: 10.1016/j.jhazmat.2019.121792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Revised: 11/29/2019] [Accepted: 11/29/2019] [Indexed: 05/16/2023]
Abstract
Aflatoxin B1 (AFB1), which is widely found in food and feed, poses a serious threat to the health of human and livestock. In this work, functionalized nanoflower-like hydroxyl magnesium silicate (FNHMS) was synthesized for adsorption of AFB1. First, bulk magnesium silicate (MS) was converted into nanoflower-like hydroxyl magnesium silicate (NHMS) by hydroxylation. Cetyltrimethylammonium bromide (CTMAB) modification then enhanced the hydrophobicity and the affinity to AFB1 of NHMS. The adsorption performance for AFB1 followed the order of MS < NHMS < FNHMS, and the adsorption performance increased with the increase of the dose of CTMAB. Isothermal adsorption analysis indicated that the surface of FNHMS was heterogeneous. The adsorption capacity of FNHMS-0.4 to AFB1 was estimated to be 27.34 mg g-1 and 28.61 mg g-1 by Freundlich and Dubinin-Radushkevich isotherm adsorption model, respectively. By analyzing the adsorption kinetics and adsorption thermodynamics, both physical adsorption and chemisorption existed in the process of AFB1 being adsorbed on FNHMS-0.4. Adsorption mechanisms analysis indicated that the adsorption followed the adsorption site priority of H > O > Mg. This work demonstrates that FNHMS could be a promising adsorbent for removal of AFB1.
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Affiliation(s)
- Zhiwei Sun
- Key Laboratory of Special Functional Materials for Ecological Environment and Information (Hebei University of Technology), Ministry of Education, Tianjin 300130, People's Republic of China; Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education (Shandong University), Jinan 250061, People's Republic of China
| | - Di Huang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information (Hebei University of Technology), Ministry of Education, Tianjin 300130, People's Republic of China
| | - Xinhui Duan
- Key Laboratory of Special Functional Materials for Ecological Environment and Information (Hebei University of Technology), Ministry of Education, Tianjin 300130, People's Republic of China
| | - Wei Hong
- Key Laboratory of Special Functional Materials for Ecological Environment and Information (Hebei University of Technology), Ministry of Education, Tianjin 300130, People's Republic of China
| | - Jinsheng Liang
- Key Laboratory of Special Functional Materials for Ecological Environment and Information (Hebei University of Technology), Ministry of Education, Tianjin 300130, People's Republic of China.
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8
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Lulamba TE, Stafford RA, Njobeh PB. The relative effectiveness of two filter aids in removing ochratoxin A during beer filtration. JOURNAL OF THE INSTITUTE OF BREWING 2019. [DOI: 10.1002/jib.570] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Tshikala Eddie Lulamba
- Department of Biotechnology and Food Technology, Faculty of Science; University of Johannesburg; Doornfontein Campus, Cnr Siemert and Beit Streets, 2028 Johannesburg-New Doornfontein Johannesburg South Africa
| | - Robert A. Stafford
- Department of Biotechnology and Food Technology, Faculty of Science; University of Johannesburg; Doornfontein Campus, Cnr Siemert and Beit Streets, 2028 Johannesburg-New Doornfontein Johannesburg South Africa
| | - Patrick Berka Njobeh
- Department of Biotechnology and Food Technology, Faculty of Science; University of Johannesburg; Doornfontein Campus, Cnr Siemert and Beit Streets, 2028 Johannesburg-New Doornfontein Johannesburg South Africa
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9
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Alberts J, Rheeder J, Gelderblom W, Shephard G, Burger HM. Rural Subsistence Maize Farming in South Africa: Risk Assessment and Intervention models for Reduction of Exposure to Fumonisin Mycotoxins. Toxins (Basel) 2019; 11:toxins11060334. [PMID: 31212811 PMCID: PMC6628387 DOI: 10.3390/toxins11060334] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 04/27/2019] [Accepted: 05/14/2019] [Indexed: 11/20/2022] Open
Abstract
Maize is a staple crop in rural subsistence regions of southern Africa, is mainly produced for direct household consumption and is often contaminated with high levels of mycotoxins. Chronic exposure to mycotoxins is a risk factor for human diseases as it is implicated in the development of cancer, neural tube defects as well as stunting in children. Although authorities may set maximum levels, these regulations are not effective in subsistence farming communities. As maize is consumed in large quantities, exposure to mycotoxins will surpass safe levels even where the contamination levels are below the regulated maximum levels. It is clear that the lowering of exposure in these communities requires an integrated approach. Detailed understanding of agricultural practices, mycotoxin occurrence, climate change/weather patterns, human exposure and risk are warranted to guide adequate intervention programmes. Risk communication and creating awareness in affected communities are also critical. A range of biologically based products for control of mycotoxigenic fungi and mycotoxins in maize have been developed and commercialised. Application of these methods is limited due to a lack of infrastructure and resources. Other challenges regarding integration and sustainability of technological and community-based mycotoxin reduction strategies include (i) food security, and (ii) the traditional use of mouldy maize.
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Affiliation(s)
- Johanna Alberts
- Mycotoxicology Research Group, Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, Bellville 7535, South Africa.
| | - John Rheeder
- Mycotoxicology Research Group, Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, Bellville 7535, South Africa.
| | - Wentzel Gelderblom
- Mycotoxicology Research Group, Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, Bellville 7535, South Africa.
| | - Gordon Shephard
- Mycotoxicology Research Group, Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, Bellville 7535, South Africa.
| | - Hester-Mari Burger
- Mycotoxicology Research Group, Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of Technology, Bellville 7535, South Africa.
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10
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Lulamba TE, Stafford RA, Njobeh PB. A sub-Saharan African perspective on mycotoxins in beer - a review. JOURNAL OF THE INSTITUTE OF BREWING 2019. [DOI: 10.1002/jib.558] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Tshikala Eddie Lulamba
- Department of Biotechnology and Food Technology, Faculty of Science; University of Johannesburg; Doornfontein Campus, CnrSiemert & Beit Streets, 2028 Johannesburg - New Doornfontein Johannesburg South Africa
| | - Robert A. Stafford
- Department of Biotechnology and Food Technology, Faculty of Science; University of Johannesburg; Doornfontein Campus, CnrSiemert & Beit Streets, 2028 Johannesburg - New Doornfontein Johannesburg South Africa
| | - Patrick Berka Njobeh
- Department of Biotechnology and Food Technology, Faculty of Science; University of Johannesburg; Doornfontein Campus, CnrSiemert & Beit Streets, 2028 Johannesburg - New Doornfontein Johannesburg South Africa
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11
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Chen C, Riley RT, Wu F. Dietary Fumonisin and Growth Impairment in Children and Animals: A Review. Compr Rev Food Sci Food Saf 2018; 17:1448-1464. [DOI: 10.1111/1541-4337.12392] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 07/24/2018] [Accepted: 08/01/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Chen Chen
- Dept. of Food Science and Human Nutrition; Michigan State Univ.; East Lansing MI 48824 U.S.A
- Inst. of Quality Standards and Testing Technology for Agro-Products; Chinese Academy of Agricultural Sciences; Beijing 100081 China
| | - Ronald T. Riley
- Dept. of Environmental Health Science; Univ. of Georgia; Athens GA 30602 U.S.A
| | - Felicia Wu
- Dept. of Food Science and Human Nutrition; Michigan State Univ.; East Lansing MI 48824 U.S.A
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12
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Pei SC, Li YH, Zhang YY, Cai L, Lee WJ. Detection of Aflatoxin B1 in Corn, Rice, and Barley by ELISA, Using a Heavy-Chain IgG2bIsotype Monoclonal Antibody. JOURNAL OF THE AMERICAN SOCIETY OF BREWING CHEMISTS 2018. [DOI: 10.1094/asbcj-2010-0115-01] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Shi Chun Pei
- College of Life Sciences, Northeast Forestry University, Harbin
- Food College, The HLJ August First Land Reclamation University, Daqing, P.R. China
| | - Yu Hua Li
- College of Life Sciences, Northeast Forestry University, Harbin, P.R. China
| | - Yuan Yuan Zhang
- Food College, The HLJ August First Land Reclamation University, Daqing, P.R. China
| | - Lin Cai
- Food College, The HLJ August First Land Reclamation University, Daqing, P.R. China
| | - Won Jong Lee
- Department of Food Science, Gangneung-Wonju National University, Gangneung, Korea
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13
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Pirouz AA, Selamat J, Iqbal SZ, Mirhosseini H, Karjiban RA, Bakar FA. The use of innovative and efficient nanocomposite (magnetic graphene oxide) for the reduction on of Fusarium mycotoxins in palm kernel cake. Sci Rep 2017; 7:12453. [PMID: 28963539 PMCID: PMC5622098 DOI: 10.1038/s41598-017-12341-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 09/07/2017] [Indexed: 11/09/2022] Open
Abstract
Adsorption plays an important role in the removal of mycotoxins from feedstuffs. The main objective of this study was to investigate the efficacy of using magnetic graphene oxide nanocomposites (MGO) as an adsorbent for the reduction of Fusarium mycotoxins in naturally contaminated palm kernel cake (PKC). Liquid chromatography-tandem mass spectrometry (LC-MS/MS) was used to assess the mycotoxins in animal feed. Target mycotoxins included the zearalenone (ZEA), the fumonisins (FB1 and FB2) and trichothecenes (deoxynivalenol (DON), HT-2 and T-2 toxin). Response surface methodology (RSM) was applied to investigate the effects of time (3-7 h), temperature (30-50 °C) and pH (3-7) on the reduction. The response surface models with (R2 = 0.94-0.99) were significantly fitted to predict mycotoxins in contaminated PKC. Furthermore, the method ensured a satisfactory adjustment of the polynomial regression models with the experimental data except for fumonisin B1 and B2, which decrease the adsorption of magnetic graphene oxide (MGO). The optimum reduction was performed at pH 6.2 for 5.2 h at of 40.6 °C. Under these optimum conditions, reduced levels of 69.57, 67.28, 57.40 and 37.17%, were achieved for DON, ZEA, HT-2, and T-2, respectively.
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Affiliation(s)
- A A Pirouz
- Food Safety Research Centre (FOSREC), Faculty of Food Science and Technology, Universit Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
- Food Safety and Food Integrity (FOSFI), Institute of Tropical Agriculture and Food Security, UPM, 43400, Serdang, Selangor, Malaysia
| | - J Selamat
- Food Safety Research Centre (FOSREC), Faculty of Food Science and Technology, Universit Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
- Food Safety and Food Integrity (FOSFI), Institute of Tropical Agriculture and Food Security, UPM, 43400, Serdang, Selangor, Malaysia.
| | - S Z Iqbal
- Food Safety Research Centre (FOSREC), Faculty of Food Science and Technology, Universit Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - H Mirhosseini
- Department of Food Technology, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
| | - R Abedi Karjiban
- Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
| | - F Abu Bakar
- Food Safety Research Centre (FOSREC), Faculty of Food Science and Technology, Universit Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
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14
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Loi M, Fanelli F, Liuzzi VC, Logrieco AF, Mulè G. Mycotoxin Biotransformation by Native and Commercial Enzymes: Present and Future Perspectives. Toxins (Basel) 2017; 9:E111. [PMID: 28338601 PMCID: PMC5408185 DOI: 10.3390/toxins9040111] [Citation(s) in RCA: 119] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 03/16/2017] [Accepted: 03/18/2017] [Indexed: 01/13/2023] Open
Abstract
Worldwide mycotoxins contamination has a significant impact on animal and human health, and leads to economic losses accounted for billions of dollars annually. Since the application of pre- and post- harvest strategies, including chemical or physical removal, are not sufficiently effective, biological transformation is considered the most promising yet challenging approach to reduce mycotoxins accumulation. Although several microorganisms were reported to degrade mycotoxins, only a few enzymes have been identified, purified and characterized for this activity. This review focuses on the biotransformation of mycotoxins performed with purified enzymes isolated from bacteria, fungi and plants, whose activity was validated in in vitro and in vivo assays, including patented ones and commercial preparations. Furthermore, we will present some applications for detoxifying enzymes in food, feed, biogas and biofuel industries, describing their limitation and potentialities.
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Affiliation(s)
- Martina Loi
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
- Department of Economics, University of Foggia, via Napoli 25, Foggia 71122, Italy.
| | - Francesca Fanelli
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
| | - Vania C Liuzzi
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
| | - Antonio F Logrieco
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
| | - Giuseppina Mulè
- Institute of Sciences of Food Production, National Research Council, via Amendola 122/O, Bari 70126, Italy.
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15
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Alberts J, Lilly M, Rheeder J, Burger HM, Shephard G, Gelderblom W. Technological and community-based methods to reduce mycotoxin exposure. Food Control 2017. [DOI: 10.1016/j.foodcont.2016.05.029] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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16
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Abd-Elsalam KA, Hashim AF, Alghuthaymi MA, Said-Galiev E. Nanobiotechnological strategies for toxigenic fungi and mycotoxin control. FOOD PRESERVATION 2017:337-364. [DOI: 10.1016/b978-0-12-804303-5.00010-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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17
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Sişman T. The protective effect of hydrated sodium calcium aluminosilicate against the adverse effects of Aflatoxin B1 on D. melanogaster. Toxicol Ind Health 2016; 22:173-9. [PMID: 16786839 DOI: 10.1191/0748233706th254oa] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The main aim of this study was to investigate the effects of Aflatoxin B1(AFB1) and Aflatoxin B1-hydrated sodium calcium aluminosilicate (HSCAS) on various developmental stages of Drosophila melanogaster. Different concentrations of AFB1and HSCAS-AFB1were administered during the developmental periods of the fly (egg, larvae and pupae). When the F1progeny of control and application groups were compared, AFB1was found to extend the process of metamorphosis and decrease the total number of offspring. However, these negative effects were inhibited with HSCAS treatment at different concentrations (5.0 and 10.0 ppm). These results suggest that HSCAS could effectively inhibit AFB1-induced abnormalities in the developmental stages of D. melanogaster.
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Affiliation(s)
- Turgay Sişman
- Department of Biology, Science and Art Faculty, Atatürk University, 25240 Erzurum, Turkey.
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Alberts JF, van Zyl WH, Gelderblom WCA. Biologically Based Methods for Control of Fumonisin-Producing Fusarium Species and Reduction of the Fumonisins. Front Microbiol 2016; 7:548. [PMID: 27199904 PMCID: PMC4845651 DOI: 10.3389/fmicb.2016.00548] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 04/04/2016] [Indexed: 12/03/2022] Open
Abstract
Infection by the fumonisin-producing Fusarium spp. and subsequent fumonisin contamination of maize adversely affect international trade and economy with deleterious effects on human and animal health. In developed countries high standards of the major food suppliers and retailers are upheld and regulatory controls deter the importation and local marketing of fumonisin-contaminated food products. In developing countries regulatory measures are either lacking or poorly enforced, due to food insecurity, resulting in an increased mycotoxin exposure. The lack and poor accessibility of effective and environmentally safe control methods have led to an increased interest in practical and biological alternatives to reduce fumonisin intake. These include the application of natural resources, including plants, microbial cultures, genetic material thereof, or clay minerals pre- and post-harvest. Pre-harvest approaches include breeding for resistant maize cultivars, introduction of biocontrol microorganisms, application of phenolic plant extracts, and expression of antifungal proteins and fumonisin degrading enzymes in transgenic maize cultivars. Post-harvest approaches include the removal of fumonisins by natural clay adsorbents and enzymatic degradation of fumonisins through decarboxylation and deamination by recombinant carboxylesterase and aminotransferase enzymes. Although, the knowledge base on biological control methods has expanded, only a limited number of authorized decontamination products and methods are commercially available. As many studies detailed the use of natural compounds in vitro, concepts in reducing fumonisin contamination should be developed further for application in planta and in the field pre-harvest, post-harvest, and during storage and food-processing. In developed countries an integrated approach, involving good agricultural management practices, hazard analysis and critical control point (HACCP) production, and storage management, together with selected biologically based treatments, mild chemical and physical treatments could reduce fumonisin contamination effectively. In rural subsistence farming communities, simple, practical, and culturally acceptable hand-sorting, maize kernel washing, and dehulling intervention methods proved to be effective as a last line of defense for reducing fumonisin exposure. Biologically based methods for control of fumonisin-producing Fusarium spp. and decontamination of the fumonisins could have potential commercial application, while simple and practical intervention strategies could also impact positively on food safety and security, especially in rural populations reliant on maize as a dietary staple.
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Affiliation(s)
- Johanna F. Alberts
- Mycotoxicology and Chemoprevention Research Group, Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of TechnologyBellville, South Africa
| | - Willem H. van Zyl
- Microbiology Department, Stellenbosch UniversityStellenbosch, South Africa
| | - Wentzel C. A. Gelderblom
- Mycotoxicology and Chemoprevention Research Group, Institute of Biomedical and Microbial Biotechnology, Cape Peninsula University of TechnologyBellville, South Africa
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Nanocellulose coated with various free fatty acids can adsorb fumonisin B1, and decrease its toxicity. Colloids Surf B Biointerfaces 2015; 134:26-30. [DOI: 10.1016/j.colsurfb.2015.06.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Revised: 06/14/2015] [Accepted: 06/16/2015] [Indexed: 11/23/2022]
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Effectiveness of activated carbon and Egyptian montmorillonite in the protection against deoxynivalenol-induced cytotoxicity and genotoxicity in rats. Food Chem Toxicol 2015; 83:174-82. [PMID: 26115597 DOI: 10.1016/j.fct.2015.06.015] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 06/16/2015] [Accepted: 06/18/2015] [Indexed: 12/28/2022]
Abstract
This study was conducted to prepare and characterize activated carbon (AC) and to evaluate its protective effect against deoxynivalenol (DON) toxicity in rats compared to Egyptian montmorillonite (EM). AC was prepared using a single-step chemical activation with phosphoric acid (H3PO4). The resulted AC has a high surface area and a high total pore volume. Male Sprague-Dawley rats were divided into 6 groups (n = 10) and treated for 3 weeks as follow: the control group, the groups fed AC or EM-supplemented diet (0.5% w/w), the group treated orally with DON (5 mg/kg b.w.) and the groups fed AC or EM-supplemented diet and treated with DON. Blood and liver samples were collected for different analyses. Treatment with DON increased liver function enzymes, lipid peroxidation, tumor necrosis factor α, DNA fragmentation, decreased hepatic glutathione content, up regulating mRNA Fas and TNF-α genes expression and increased micronucleated polychromatic erythrocytes and normochromatic erythrocytes in bone marrow. Co-treatment of DON plus AC or EM succeeded to normalize the levels of the biochemical parameters, reduced the cytotoxicity of bone marrow and ameliorated the hepatic genotoxicity. Moreover, AC was more effective than EM and has a high affinity to adsorb DON and to reduce its cytotoxicity and genotoxicity.
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Jebali A, Yasini Ardakani SA, Shahdadi H, Balal Zadeh MH, Hekmatimoghaddam S. Modification of nanocellulose by poly-lysine can inhibit the effect of fumonisin B1 on mouse liver cells. Colloids Surf B Biointerfaces 2015; 126:437-43. [DOI: 10.1016/j.colsurfb.2014.12.047] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Revised: 12/19/2014] [Accepted: 12/27/2014] [Indexed: 10/24/2022]
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Abdel-Wahhab MA, El-Denshary ES, El-Nekeety AA, Abdel-Wahhab KG, Hamzawy MA, Elyamany MF, Hassan NS, Mannaa FA, Shaiea MNQ, Gado RA, Zawrah MF. Efficacy of Organo-Modified Nano Montmorillonite to Protect against the Cumulative Health Risk of Aflatoxin B<sub>1</sub> and Ochratoxin A in Rats. ACTA ACUST UNITED AC 2015. [DOI: 10.4236/snl.2015.52004] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Cao J, Wang W. Effects of astaxanthin and esterified glucomannan on hematological and serum parameters, and liver pathological changes in broilers fed aflatoxin-B1-contaminated feed. Anim Sci J 2013; 85:150-7. [PMID: 24033398 DOI: 10.1111/asj.12103] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 05/23/2013] [Indexed: 11/29/2022]
Abstract
The effects of astaxanthin (ASTA) and esterified glucomannan (EMG) on hematological and serum parameters, and liver pathological changes in broilers fed on aflatoxin-B1 (AFB1) contaminated diet were investigated. Two hundred and forty 10-day-old broilers were randomly assigned to one of five dietary treatments including: (i) control diet; (ii) AFB1-contaminated diet; (iii) AFB1 + EGM diet; (iv) AFB1 + ASTA diet; and (v) AFB1 + EGM + ASTA diet. At 35 days old, blood and liver tissue samples were collected for analysis. Results indicated that total white blood cell (WBC) number, hemoglobin (Hgb) concentration, hematocrit (Hct) level, serum alanine amino transferase (AST) and γ-glutamyl transferase (GGT) activities, red blood cell (RBC) number, serum globulin (GLB) and urea nitrogen (BUN) concentrations (P < 0.05) were increased by feeding AFB1-contaminated diet. EMG and ASTA alleviated the alteration of RBC, WBC, Hgb and AST caused by AFB1-contaminated diet. Liver superoxide dismutase (SOD) activity was reduced, while myeloperoxidase (MPO) activity was increased by AFB1-contaminated diet (P < 0.05). Both EGM and ASTA restrained the increase of MPO activity (P < 0.05). Degeneration of the liver tissues was found in broilers fed AFB1-contaminated diet. It suggested that feeding 0.4 mg/kg AFB1-contaminated diet resulted in adverse effects on blood parameters and liver morphology. Dietary addition of EGM addition at 5 g/kg diet, ASTA at 10 mg/kg diet and especially their combination showed positive protection effects on alleviating the alteration of feeding AFB1. The results indicated that supplementation of 5 g EGM/kg diet, 10 mg ASTA/kg diet and their combination could partially or greatly alleviate the adverse effects caused by AFB1, with the EGM+ASTA group receiving the most effective treatment.
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Affiliation(s)
- Jigang Cao
- College of Preclinical Medicine, Hubei University of Chinese Medicine, Wuhan, China
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Shugalei IV, Voznyakovskii AP, Garabadzhiu AV, Tselinskii IV, Sudarikov AM, Ilyushin MA. Biological activity of detonation nanodiamond and prospects in its medical and biological applications. RUSS J GEN CHEM+ 2013. [DOI: 10.1134/s1070363213050010] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Baglieri A, Reyneri A, Gennari M, Nègre M. Organically modified clays as binders of fumonisins in feedstocks. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART. B, PESTICIDES, FOOD CONTAMINANTS, AND AGRICULTURAL WASTES 2013; 48:776-783. [PMID: 23688228 DOI: 10.1080/03601234.2013.780941] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This study reports an investigation on the ability of organically modified clays to bind mycotoxins, fumonisins B1 (FB1) and B2 (FB2). Organically modified clays are commercia materials prepared from natural clays, generally montmorillonite, by exchanging the inorganic cation with an ammonium organic cation. A screening experiment conducted on 13 organically modified clays and 3 nonmodified clays, used as controls, has confirmed that the presence of an organic cation in the clay interlayer promoted the adsorption of both fumonisins. On the basis of the results of the screening test, four modified clays and a Na-montmorillonite were selected for the determination of the adsorption kinetics and isotherms. On all the tested materials adsorption took place within one hour of contact with fumonisins solutions. Adsorption isotherms have pointed out that the modified clays exhibited a higher adsorptive capacity than the unmodified clay. It was also demonstrated that, notwithstanding the reduced structural difference between FB1 and FB2, they were differently adsorbed on the modified clays. Addition of 2% modified clays to contaminated maize allowed a reduction of more than 70% and 60% of the amount of FB1and FB2 released in solution. Although in vivo experiments are required to confirm the effectiveness of the organically modified clays, these preliminary results suggest that these materials are promising as fumonisins binders.
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Affiliation(s)
- Andrea Baglieri
- Dipartimento di Scienze delle Produzioni Agrarie e Alimentari, Università di Catania, Catania, Italy
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Abbès S, Ben Salah-Abbès J, Sharafi H, Noghabi KA, Oueslati R. Interaction of Lactobacillus plantarum MON03 with Tunisian montmorillonite clay and ability of the composite to immobilize Zearalenone in vitro and counteract immunotoxicity in vivo. Immunopharmacol Immunotoxicol 2012; 34:944-50. [PMID: 22550972 DOI: 10.3109/08923973.2012.674139] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND AND AIM The present study was conducted to determine the abilities of the living Lactobacillus plantarum MON03 (LP) cells, Tunisian montmorillonite clay and their composites to accumulate Zearalenone (ZEA) from a liquid medium and elucidate the preventive effect of their composite in ZEA-contaminated balb/c mice showing immunotoxicity disorders. MATERIALS AND METHODS In the in vitro study, LP (2 × 10(9) CFU/mL), TM (0.5 mg) and LP+TM were incubated with 50 µg mL(-1) ZEA for 0, 12 and 24 h. For the in vivo study, the composite MT+LP was evaluated also for possible protection regarding ZEA-immunotoxicity in Balb/c mice as a sensitive model. RESULTS Results indicated that TM and LP+TM had a high capacity of adsorbing ZEA 87.2 ± 2.1 and 94.2 ± 2.1%, respectively. However, LP alone able to remove only 78% after 24 h of incubation. The quantity of adsorbed ZEA by LP, TM and LP+TM were 39, 43,5 and 47 µg mL(-1) of PBS, respectively. The in vivo results indicated that mice orally exposed to ZEA- (40 mg/kg bw) for 2 weeks showed severe immunotoxicity typical of fusarotoxicosis regarding thymocytes and splenocytes cell viability count, IFN-γ, IL-12, TNF-α production and B-cell activation. Mice treated with LP and TM alone, and LP+MT in combination with ZEA were comparable to the control. CONCLUSION Both LP and TM are safe by themselves and their composite succeeded to exert a potential prevention by counteracting ZEA-immunotoxicity and can be implicated in the biotechnology of ZEA removal in human food and animal feed.
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Affiliation(s)
- Samir Abbès
- Unit of Immunology, Environmental Microbiology and Cancerology, Faculty of Sciences Bizerte, University of Carthage, Tunis, Tunisia.
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Jard G, Liboz T, Mathieu F, Guyonvarc’h A, Lebrihi A. Review of mycotoxin reduction in food and feed: from prevention in the field to detoxification by adsorption or transformation. Food Addit Contam Part A Chem Anal Control Expo Risk Assess 2011; 28:1590-609. [DOI: 10.1080/19440049.2011.595377] [Citation(s) in RCA: 164] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Mogilnaya O, Puzyr A, Baron A, Bondar V. Hematological parameters and the state of liver cells of rats after oral administration of aflatoxin b1 alone and together with nanodiamonds. NANOSCALE RESEARCH LETTERS 2010; 5:908-912. [PMID: 20672086 PMCID: PMC2893949 DOI: 10.1007/s11671-010-9571-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/05/2009] [Accepted: 02/26/2010] [Indexed: 05/29/2023]
Abstract
Hematological parameters and the state of liver cells of rats were examined in vivo after the animals received aflatoxin B1 (AfB1) alone and together with modified nanodiamonds (MND) synthesized by detonation. The rats that had received the MND hydrosol had elevated leukocyte levels, mainly due to higher granulocyte counts and somewhat increased monocyte counts compared to control rats. Hematological parameters of the rats that had received AfB1 alone differed from those of the control rats in another way: total white blood cell counts were significantly lower due to the decreased lymphocyte counts. In rats that had consumed AfB1 with the MND hydrosol, changes in hematological parameters were less pronounced than in rats that had consumed either AfB1 or MND. Electron microscopy showed that hepatocytes of the rats that had received the MND hydrosol or AfB1 with the MND hydrosol contained elevated levels of lipid inclusions and lysosomes. Hyperplasia of the smooth endoplasmic reticulum (EPR) was revealed in liver specimens of the rats that had received AfB1. Results of the study suggest the conclusion about mutual mitigation of the effects of nanoparticles and the mycotoxin on rats blood and liver cells after AfB1 has adsorbed on MND.
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Affiliation(s)
- Oa Mogilnaya
- Institute of Biophysics SB RAS, Akademgorodok, 50, 660036, Krasnoyarsk, Russia.
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Mogilnaya OA, Puzyr’ AP, Bondar’ VS. Growth and bioluminescence of luminous bacteria under the action of aflatoxin B1 before and after its treatment with nanodiamonds. APPL BIOCHEM MICRO+ 2010. [DOI: 10.1134/s0003683810010059] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Daković A, Kragović M, Rottinghaus GE, Sekulić Z, Milićević S, Milonjić SK, Zarić S. Influence of natural zeolitic tuff and organozeolites surface charge on sorption of ionizable fumonisin B(1). Colloids Surf B Biointerfaces 2009; 76:272-8. [PMID: 20004084 DOI: 10.1016/j.colsurfb.2009.11.003] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2009] [Revised: 10/15/2009] [Accepted: 11/09/2009] [Indexed: 10/20/2022]
Abstract
Natural zeolitic tuff was modified with 2, 5 and 10mmol M(+)/100g of octadecyldimethylbenzyl ammonium (ODMBA) ions and the products were denoted as OZ-2, OZ-5 and OZ-10. The starting material and organozeolites were characterized by determination of the point of zero charge (pH(pzc)) and by thermal analysis. In vitro sorption of fumonisin B(1) (FB(1)) was studied for all sorbents at pH 3, 7 and 9. The pH(pzc) for the zeolitic tuff was 6.8+/-0.1, while the pH(pzc) for OZ-2, OZ-5 and OZ-10 pH(pzc) was 7.0+/-0.1. The curves pH(final)=f(pH(initial)) suggest that the surfaces of all sorbents are positively charged at pH 3 and uncharged at pH 7 and 9. High sorption of FB(1) by the zeolitic tuff in acidic solution suggests electrostatic interactions between the anionic FB(1) and the positively charged surface. At pH 7 and 9, adsorption of FB(1) is prevented because anionic FB(1) cannot be adsorbed at the uncharged surface. From the pH(pzc) for the organozeolites, it is possible that with lower amounts of ODMBA (OZ-2 and OZ-5), at pH 3, beside interactions between head groups of ODMBA and its alkyl chains and anionic FB(1), electrostatic interactions between positive uncovered surface and anionic FB(1) contribute to the sorption, while at pH 7 and 9 there is only the possibility for interactions between FB(1) and ODMBA. When the zeolitic surface was completely covered with ODMBA (OZ-10), FB(1) sorption was independent of the form of FB(1) suggesting only interactions between ODMBA and FB(1).
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Affiliation(s)
- Aleksandra Daković
- Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia.
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Chang CF, Wu YL, Hou SS. Preparation and characterization of superparamagnetic nanocomposites of aluminosilicate/silica/magnetite. Colloids Surf A Physicochem Eng Asp 2009. [DOI: 10.1016/j.colsurfa.2008.11.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Türkez H, Sişman T. Anti-genotoxic effect of hydrated sodium calcium aluminosilicate on genotoxicity to human lymphocytes induced by aflatoxin B1. Toxicol Ind Health 2008; 23:83-9. [PMID: 18203560 DOI: 10.1177/0748233707076738] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The anti-genotoxic potential of hydrated sodium calcium aluminosilicate (HSCAS) was investigated using sister chromatid exchanges (SCEs) induced by aflatoxin B1 (AFB1) as genotoxic endpoint in human lymphocytes. Whole blood samples from two healthy male donors were used for this experiment and the effects of different concentrations of HSCAS (5 x 10(-6) and 1 x 10(-5) M) and AFB1 (1, 5 and 10 microM) were tested. The present results established that the frequencies of SCEs (at doses of 5 and 10 microM except for 1 microM) in lymphocytes were significantly increased by AFB1 compared to controls. When HSCAS was added alone at a molar ratio of 5 x 10(-6) and 1 x 10(-5), lymphocytes did not show significant increases in SCE frequencies, but SCE frequencies induced by the various concentrations of AFB1 could be significantly reduced by the presence of HSCAS (at both doses). In fact, HSCAS at 1 x 10(-5) M completely inhibited SCE formations caused by AFB1. These results suggest for the first time, that HSCAS can antagonize the ability of AFB1 to cause DNA damage that leads to the formation of SCEs.
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Affiliation(s)
- Hasan Türkez
- Department of Biology, Science and Art Faculty, Atatürk University, 25240 Erzurum, Turkey
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