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Escobedo-González RG, Moyers-Montoya ED, Martínez-Pérez CA, García-Casillas PE, Miranda-Ruvalcaba R, Nicolás-Vázquez MIN. In Silico Study of Novel Cyclodextrin Inclusion Complexes of Polycaprolactone and Its Correlation with Skin Regeneration. Int J Mol Sci 2023; 24:ijms24108932. [PMID: 37240276 DOI: 10.3390/ijms24108932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 04/26/2023] [Accepted: 05/04/2023] [Indexed: 05/28/2023] Open
Abstract
Three novel biomaterials obtained via inclusion complexes of β-cyclodextrin, 6-deoxi-6-amino-β-cyclodextrin and epithelial growth factor grafted to 6-deoxi-6-amino-β-cyclodextrin with polycaprolactone. Furthermore, some physicochemical, toxicological and absorption properties were predicted using bioinformatics tools. The electronic, geometrical and spectroscopical calculated properties agree with the properties obtained via experimental methods, explaining the behaviors observed in each case. The interaction energy was obtained, and its values were -60.6, -20.9 and -17.1 kcal/mol for β-cyclodextrin/polycaprolactone followed by the 6-amino-β-cyclodextrin-polycaprolactone complex and finally the complex of epithelial growth factor anchored to 6-deoxy-6-amino-β-cyclodextrin/polycaprolactone. Additionally, the dipolar moments were calculated, achieving values of 3.2688, 5.9249 and 5.0998 Debye, respectively, and in addition the experimental wettability behavior of the studied materials has also been explained. It is important to note that the toxicological predictions suggested no mutagenic, tumorigenic or reproductive effects; moreover, an anti-inflammatory effect has been shown. Finally, the improvement in the cicatricial effect of the novel materials has been conveniently explained by comparing the poly-caprolactone data obtained in the experimental assessments.
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Affiliation(s)
- René Gerardo Escobedo-González
- Department of Industrial Maintenance, Technological University of the City of Juárez, Av. Universidad Tecnológica No. 3051, Col. Lote Bravo II, Ciudad Juárez 32695, Mexico
| | - Edgar Daniel Moyers-Montoya
- Institute of Engineering and Technology, Autonomous University of the City of Juárez (UACJ), Ave. Del Charro 450 Norte, Ciudad Juárez 32310, Mexico
| | - Carlos Alberto Martínez-Pérez
- Institute of Engineering and Technology, Autonomous University of the City of Juárez (UACJ), Ave. Del Charro 450 Norte, Ciudad Juárez 32310, Mexico
| | - Perla Elvia García-Casillas
- Institute of Engineering and Technology, Autonomous University of the City of Juárez (UACJ), Ave. Del Charro 450 Norte, Ciudad Juárez 32310, Mexico
- Applied Chemistry Research Center, Blvd. Enrique Reyna Hermosillo No. 140, Saltillo 25294, Mexico
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Tessema FB, Gonfa YH, Asfaw TB, Tadesse MG, Tadesse TG, Bachheti A, Alshaharni MO, Kumar P, Kumar V, Širić I, Abou Fayssal S, Chaubey KK, Bachheti RK. Targeted HPTLC Profile, Quantification of Flavonoids and Phenolic Acids, and Antimicrobial Activity of Dodonaea angustifolia (L.f.) Leaves and Flowers. Molecules 2023; 28:molecules28062870. [PMID: 36985842 PMCID: PMC10052987 DOI: 10.3390/molecules28062870] [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: 03/01/2023] [Revised: 03/12/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
In East Africa, Dodonaea angustifolia (L.f.) is a well-known medicinal herb. Its leaf is primarily studied in light of its ethnobotanical use. In terms of phytochemistry and biological activity, its flower is not studied. In a prior study, our team looked into phytochemical screening, antioxidant activity, and total phenolic levels. This study aims to compare the profiles and biological activities of the leaf and flower samples of D. angustifolia and to present therapeutic alternatives. The leaf and flower sample powders were extracted with methanol using ultrasound-assisted extraction (UAE). HPTLC profile was obtained using CAMAG-HPTLC equipped with VisionCATS software. Antimicrobial agar well diffusion assay and minimum inhibition concentration (MIC) were determined. The leaf and flower extracts of D. angustifolia showed antibacterial activity with a MIC value of 20 µg/mL against Enterococcus faecalis and Listeria monocytogenes. Similarly, 40 µg/mL was found to be effective against Aspergillus flavus. D. angustifolia flower is a rich source of flavonoids and phenolic acids. Because of its antibacterial properties and profile, which are almost the same, the flower is emerging as a viable option for medicinal alternatives.
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Affiliation(s)
- Fekade Beshah Tessema
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
- Centre of Excellence in Biotechnology and Bioprocess, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
- Department of Chemistry, Faculty of Natural and Computational Science, Woldia University, Woldia P.O. Box. 400, Ethiopia
| | - Yilma Hunde Gonfa
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
- Centre of Excellence in Biotechnology and Bioprocess, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
- Department of Chemistry, Faculty of Natural and Computational Science, Ambo University, Ambo P.O. Box 19, Ethiopia
| | - Tilahun Belayneh Asfaw
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
- Department of Chemistry, College of Natural and Computational Science, Gondar University, Gondar P.O. Box 196, Ethiopia
| | - Mesfin Getachew Tadesse
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
- Centre of Excellence in Biotechnology and Bioprocess, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
| | - Tigist Getachew Tadesse
- Bio and Emerging Technology Institute, Health Biotechnology Directorate, Addis Ababa P.O. Box 5954, Ethiopia
| | - Archana Bachheti
- Department of Environment Science, Graphic Era (Deemed to be University), Dehradun 248002, India
| | - Mohammed O Alshaharni
- Department of Biology, College of Science, King Khalid University, Abha 61321, Saudi Arabia
| | - Pankaj Kumar
- Agro-Ecology and Pollution Research Laboratory, Department of Zoology and Environmental Science, Gurukula Kangri (Deemed to Be University), Haridwar 249404, India
| | - Vinod Kumar
- Agro-Ecology and Pollution Research Laboratory, Department of Zoology and Environmental Science, Gurukula Kangri (Deemed to Be University), Haridwar 249404, India
| | - Ivan Širić
- University of Zagreb, Faculty of Agriculture, Svetosimunska 25, 10000 Zagreb, Croatia
| | - Sami Abou Fayssal
- Department of Agronomy, Faculty of Agronomy, University of Forestry, 10 Kliment Ohridski Blvd, 1797 Sofia, Bulgaria
- Department of Plant Production, Faculty of Agriculture, Lebanese University, Beirut 1302, Lebanon
| | - Kundan Kumar Chaubey
- Division of Research and Innovation, School of Applied and Life Sciences, Uttaranchal University, Arcadia Grant, P.O. Chandanwari, Prem Nagar, Dehradun 248007, India
| | - Rakesh Kumar Bachheti
- Department of Industrial Chemistry, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
- Centre of Excellence in Biotechnology and Bioprocess, Addis Ababa Science and Technology University, Addis Ababa P.O. Box 16417, Ethiopia
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Computational Studies of Aflatoxin B 1 (AFB 1): A Review. Toxins (Basel) 2023; 15:toxins15020135. [PMID: 36828449 PMCID: PMC9967988 DOI: 10.3390/toxins15020135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/25/2023] [Accepted: 02/03/2023] [Indexed: 02/11/2023] Open
Abstract
Aflatoxin B1 (AFB1) exhibits the most potent mutagenic and carcinogenic activity among aflatoxins. For this reason, AFB1 is recognized as a human group 1 carcinogen by the International Agency of Research on Cancer. Consequently, it is essential to determine its properties and behavior in different chemical systems. The chemical properties of AFB1 can be explored using computational chemistry, which has been employed complementarily to experimental investigations. The present review includes in silico studies (semiempirical, Hartree-Fock, DFT, molecular docking, and molecular dynamics) conducted from the first computational study in 1974 to the present (2022). This work was performed, considering the following groups: (a) molecular properties of AFB1 (structural, energy, solvent effects, ground and the excited state, atomic charges, among others); (b) theoretical investigations of AFB1 (degradation, quantification, reactivity, among others); (c) molecular interactions with inorganic compounds (Ag+, Zn2+, and Mg2+); (d) molecular interactions with environmentally compounds (clays); and (e) molecular interactions with biological compounds (DNA, enzymes, cyclodextrins, glucans, among others). Accordingly, in this work, we provide to the stakeholder the knowledge of toxicity of types of AFB1-derivatives, the structure-activity relationships manifested by the bonds between AFB1 and DNA or proteins, and the types of strategies that have been employed to quantify, detect, and eliminate the AFB1 molecule.
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Reactive molecular dynamics simulation on degradation of aflatoxin B1 by cold atmospheric plasmas. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Detoxifying aflatoxin contaminated peanuts by high concentration of H2O2 at moderate temperature and catalase inactivation. Food Control 2022. [DOI: 10.1016/j.foodcont.2022.109218] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Wei J, Wu X, Wu C, Hou F, Wu L, Huang H. Metal-organic frameworks with peroxidase-like activity for efficient removal of aflatoxin B 1. Food Chem 2022; 378:132037. [PMID: 35045371 DOI: 10.1016/j.foodchem.2021.132037] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/24/2021] [Accepted: 12/31/2021] [Indexed: 12/30/2022]
Abstract
Aflatoxin B1 (AFB1), a naturally produced toxin existing in major food crops, is highly toxic and carcinogenic to human and animals. In this study, a reusable material, Pd@PCN-222 with great adsorption performance and peroxidase-like activity was synthesized for the removal of AFB1. Pd@PCN-222 exhibited great adsorption performance owing to hierarchical porous structure. Pd@PCN-222 also could catalyze the AFB1 in the presence of H2O2 due to the Fe-tetrakis (4-carboxyphenyl) porphyrin and Pd as effective peroxidase active site, which improved the removal efficiency of AFB1. Pd@PCN-222 was applied for the removal of AFB1 with a removal rate of 96.52% in 2 h. Owing to the advantages of high removal efficiency and reusability, Pd@PCN-222 had great application potential in AFB1 removal.
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Affiliation(s)
- Jinhui Wei
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Xiangchuan Wu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Chengyuan Wu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Fan Hou
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China
| | - Lina Wu
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China.
| | - He Huang
- School of Food Science and Pharmaceutical Engineering, Nanjing Normal University, Nanjing 210023, PR China; College of Pharmaceutical Science, Nanjing Tech University, Nanjing 211816, PR China.
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The Ability of Chlorophyll to Trap Carcinogen Aflatoxin B1: A Theoretical Approach. Int J Mol Sci 2022; 23:ijms23116068. [PMID: 35682746 PMCID: PMC9181093 DOI: 10.3390/ijms23116068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/19/2022] [Accepted: 05/26/2022] [Indexed: 01/27/2023] Open
Abstract
The coordination of one and two aflatoxin B1 (AFB1, a potent carcinogen) molecules with chlorophyll a (chl a) was studied at a theoretical level. Calculations were performed using the M06-2X method in conjunction with the 6-311G(d,p) basis set, in both gas and water phases. The molecular electrostatic potential map shows the chemical activity of various sites of the AFB1 and chl a molecules. The energy difference between molecular orbitals of AFB1 and chl a allowed for the establishment of an intermolecular interaction. A charge transfer from AFB1 to the central cation of chl a was shown. The energies of the optimized structures for chl a show two configurations, unfolded and folded, with a difference of 15.41 kcal/mol. Chl a appeared axially coordinated to the plane (α-down or β-up) of the porphyrin moiety, either with the oxygen atom of the ketonic group, or with the oxygen atom of the lactone moiety of AFB1. The complexes of maximum stability were chl a 1-α-E-AFB1 and chl a 2-β-E-AFB1, at −36.4 and −39.2 kcal/mol, respectively. Additionally, with two AFB1 molecules were chl a 1-D-2AFB1 and chl a 2-E-2AFB1, at −60.0 and −64.8 kcal/mol, respectively. Finally, biosorbents containing chlorophyll could improve AFB1 adsorption.
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Qiu T, Wang H, Yang Y, Yu J, Ji J, Sun J, Zhang S, Sun X. Exploration of biodegradation mechanism by AFB1-degrading strain Aspergillus niger FS10 and its metabolic feedback. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107609] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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Zohdijamil Z, Reza Ahmadi Afshar SA, Khazalpour S, Hashemi M. Deep eutectic solvent based ultrasound assisted emulsification microextraction for preconcentration and voltammetric determination of aflatoxin B1 in cereal samples. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2021; 13:946-954. [PMID: 33527929 DOI: 10.1039/d0ay02197k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A new and simple deep eutectic solvent based ultrasound-assisted emulsification microextraction (DES-UAEME) procedure has been developed for preconcentration and voltammetric determination of aflatoxin B1 (AFB1) in cereal products. The method is based on the acetonitrile-based extraction of AFB1 from homogenized cereal samples followed by a DES-UAEME procedure for subsequent differential pulse voltammetry (DPV) determination in a microcell. A DES composed of choline chloride and urea (ChCl-Ur) was used as the extraction solvent and electrolyte for DPV detection. Various parameters affecting the extraction efficiency of AFB1 were evaluated and optimized. Under optimum conditions the calibration graph was linear in the range of 0.2-80.0 μg L-1 (R2 = 0.9966) and the limit of detection (3Sb) was estimated to be 0.05 μg L-1. The intra-day and inter-day precision (RSD%) for determination of 5.0 μg L-1 AFB1 were 3.4% and 3.9%, respectively. The proposed method was also successfully applied for preconcentration and determination of AFB1 in different cereal samples and good relative recoveries were obtained over a range of 94 to 104%.
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Liu SH, Wen BY, Lin JS, Yang ZW, Luo SY, Li JF. Rapid and Quantitative Detection of Aflatoxin B 1 in Grain by Portable Raman Spectrometer. APPLIED SPECTROSCOPY 2020; 74:1365-1373. [PMID: 32748642 DOI: 10.1177/0003702820951891] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Many foodstuffs are extremely susceptible to contamination with aflatoxins, in which aflatoxin B1 is highly toxic and carcinogenic. Therefore, it is crucial to develop a rapid and effective analytical method for detecting and monitoring aflatoxin B1 in food. Herein, a surface-enhanced Raman spectroscopic (SERS) method combined with QuEChERS (quick, easy, cheap-effective, rugged, safe) sample pretreatment technique was used to detect aflatoxin B1. Sample preparation was optimized into a one-step extraction method using an Au nanoparticle-based solution (Au sol) as the SERS detection substrate. An affordable portable Raman spectrometer was then used for rapid, label-free, quantitative detection of aflatoxin B1 levels in foodstuffs. This method showed a good linear log relationship between the Raman signal intensity of aflatoxin B1 in the 1-1000 µg L-1 concentration range with a limit of detection of 0.85 µg kg-1 and a correlation coefficient of 0.9836. Rapid aflatoxin B1 detection times of ∼10 min for wheat, corn, and protein feed powder samples were also achieved. This method has high sensitivity, strong specificity, excellent stability, is simple to use, economical, and is suitable for on-site detection, with good prospects for practical application in the field of food safety.
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Affiliation(s)
- Sheng-Hong Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, 12466Xiamen University, Xiamen, China
| | - Bao-Ying Wen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, 12466Xiamen University, Xiamen, China
| | - Jia-Sheng Lin
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, 12466Xiamen University, Xiamen, China
| | - Zhen-Wei Yang
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, 12466Xiamen University, Xiamen, China
| | - Shi-Yi Luo
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, 12466Xiamen University, Xiamen, China
| | - Jian-Feng Li
- State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, 12466Xiamen University, Xiamen, China
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Jubeen F, Sher F, Hazafa A, Zafar F, Ameen M, Rasheed T. Evaluation and detoxification of aflatoxins in ground and tree nuts using food grade organic acids. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2020. [DOI: 10.1016/j.bcab.2020.101749] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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12
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Zhou Z, Li R, Ng TB, Lai Y, Yang J, Ye X. A New Laccase of Lac 2 from the White Rot Fungus Cerrena unicolor 6884 and Lac 2-Mediated Degradation of Aflatoxin B 1. Toxins (Basel) 2020; 12:toxins12080476. [PMID: 32727016 PMCID: PMC7472184 DOI: 10.3390/toxins12080476] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/22/2020] [Accepted: 07/24/2020] [Indexed: 11/16/2022] Open
Abstract
Aflatoxin B1 (AFB1) is a known toxic human carcinogen and can be detoxified by laccases, which are multicopper oxidases that convert several environmental pollutants and toxins. In this study, a new laccase that could catalyze AFB1 degradation was purified and identified from the white-rot fungus Cerrena unicolor 6884. The laccase was purified using (NH4)2SO4 precipitation and anion exchange chromatography, and then identified as Lac 2 through zymogram and UHPLC-MS/MS based on the Illumina transcriptome analysis of C. unicolor 6884. Six putative laccase protein sequences were obtained via functional annotation. The lac 2 cDNA encoding a full-length protein of 512 amino acids was cloned and sequenced to expand the fungus laccase gene library for AFB1 detoxification. AFB1 degradation by Lac 2 was conducted in vitro at pH 7.0 and 45 °C for 24 h. The half-life of AFB1 degradation catalyzed by Lac 2 was 5.16 h. Acetosyringone (AS), Syrinagaldehyde (SA) and [2,2' -azino-bis-(3-ethylbenzothiazoline-6-sulfonic acid)] (ABTS) at 1 mM concentration seemed to be similar mediators for strongly enhancing AFB1 degradation by Lac 2. The product of AFB1 degradation catalyzed by Lac 2 was traced and identified to be Aflatoxin Q1 (AFQ1) based on mass spectrometry data. These findings are promising for a possible application of Lac 2 as a new aflatoxin oxidase in degrading AFB1 present in food and feeds.
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Affiliation(s)
- Zhimin Zhou
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China;
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou 350116, China; (R.L.); (Y.L.); (J.Y.)
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou 350116, China
| | - Renkuan Li
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou 350116, China; (R.L.); (Y.L.); (J.Y.)
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou 350116, China
| | - Tzi Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong 999077, China;
| | - Yunyun Lai
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou 350116, China; (R.L.); (Y.L.); (J.Y.)
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou 350116, China
| | - Jie Yang
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou 350116, China; (R.L.); (Y.L.); (J.Y.)
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou 350116, China
| | - Xiuyun Ye
- College of Chemical Engineering, Fuzhou University, Fuzhou 350116, China;
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fuzhou 350116, China; (R.L.); (Y.L.); (J.Y.)
- National Engineering Laboratory for High-efficient Enzyme Expression, Fuzhou 350116, China
- Correspondence: ; Tel.: +86-591-2286-6376
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Loi M, Renaud JB, Rosini E, Pollegioni L, Vignali E, Haidukowski M, Sumarah MW, Logrieco AF, Mulè G. Enzymatic transformation of aflatoxin B 1 by Rh_DypB peroxidase and characterization of the reaction products. CHEMOSPHERE 2020; 250:126296. [PMID: 32135437 DOI: 10.1016/j.chemosphere.2020.126296] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 02/17/2020] [Accepted: 02/20/2020] [Indexed: 06/10/2023]
Abstract
In some environments, a number of crops, notably maize and nuts can be contaminated by aflatoxin B1 and related compounds resulting from the growth of aflatoxin-producing Aspergilli. Fungal peroxidases have been shown to degrade a number of mycotoxins, including aflatoxin B1 (AFB1). Therefore, the purpose of this study was to investigate the in vitro enzymatic degradation AFB1 by a recombinant type B dye decolorizing peroxidase (Rh_DypB). Analysis of the reaction products by HPLC-MS analysis showed that under optimized conditions AFB1 was efficiently transformed by Rh_DypB, reaching a maximum of 96% conversion after 4 days of reaction at 25 °C. Based on high resolution mass spectrometry analysis, AFB1 was demonstrated to be quantitatively converted to AFQ1, a compound with a significantly lower toxicity. A number of low molecular mass compounds were also present in the final reaction mixture in small quantities. The results presented in this study are promising for a possible application of the enzyme Rh_DypB for aflatoxin reduction in feed.
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Affiliation(s)
- Martina Loi
- Institute of Sciences of Food Production, National Research Council of Italy (ISPA-CNR), Via G. Amendola 122/O, 70126 Bari, Italy.
| | - Justin B Renaud
- London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street London, Ontario, Canada, N5V4T3.
| | - Elena Rosini
- Department of Biotechnology and Life Sciences, University of Insubria, via Dunant 3, 21100 Varese, Italy.
| | - Loredano Pollegioni
- Department of Biotechnology and Life Sciences, University of Insubria, via Dunant 3, 21100 Varese, Italy.
| | - Elisa Vignali
- Department of Biotechnology and Life Sciences, University of Insubria, via Dunant 3, 21100 Varese, Italy.
| | - Miriam Haidukowski
- Institute of Sciences of Food Production, National Research Council of Italy (ISPA-CNR), Via G. Amendola 122/O, 70126 Bari, Italy.
| | - Mark W Sumarah
- London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford Street London, Ontario, Canada, N5V4T3.
| | - Antonio F Logrieco
- Institute of Sciences of Food Production, National Research Council of Italy (ISPA-CNR), Via G. Amendola 122/O, 70126 Bari, Italy.
| | - Giuseppina Mulè
- Institute of Sciences of Food Production, National Research Council of Italy (ISPA-CNR), Via G. Amendola 122/O, 70126 Bari, Italy.
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Méndez-Albores A, Escobedo-González R, Aceves-Hernández JM, García-Casillas P, Nicolás-Vázquez MI, Miranda-Ruvalcaba R. A Theoretical Study of the Adsorption Process of B-aflatoxins Using Pyracanthakoidzumii (Hayata) Rehder Biomasses. Toxins (Basel) 2020; 12:E283. [PMID: 32354011 PMCID: PMC7290487 DOI: 10.3390/toxins12050283] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/11/2020] [Accepted: 04/24/2020] [Indexed: 12/03/2022] Open
Abstract
Employing theoretical calculations with density functional theory (DFT) using the B3LYP/6-311++G(d,p) functional and basis set, the interaction of the aflatoxin B1 (AFB1) molecule and the functional groups present in the Pyracantha koidzumii biosorbent was investigated. Dissociation free energy and acidity equilibrium constant values were obtained theoretically both in solution (water) and gas phases. Additionally, the molecular electrostatic potential for the protonated molecules was calculated to verify the reactivity. Thus, methanol (hydroxyl group), methylammonium ion (amino group), acetate ion (carboxyl group), and acetone (carbonyl group), were used as representatives of the substrates present in the biomass; these references were considered using the corresponding protonated or unprotonated forms at a pH value of 5. The experimental infrared spectrophotometric data suggested the participation of these functional groups in the AFB1 biosorption process, indicating that the mechanism was dominated by electrostatic interactions between the charged functional groups and the positively charged AFB1 molecule. The theoretical determination indicated that the carboxylate ion provided the highest interaction energy with the AFB1 molecule. Consequently, an enriched biosorbent with compounds containing carboxyl groups could improve the yield of the AFB1 adsorption when using in vitro and in vivo trials.
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Affiliation(s)
- Abraham Méndez-Albores
- UNAM–FESC, Campus 4, Multidisciplinary Research Unit L14 (Food, Mycotoxins and Mycotoxicosis), Cuautitlan Izcalli 54714, Mexico;
| | - René Escobedo-González
- Department of industrial maintenance and nanotechnology, Technological University of Juarez City, Ciudad Juarez, Chihuahua 32695, Mexico;
| | - Juan Manuel Aceves-Hernández
- UNAM–FESC, Campus 1, Chemical Sciences Department, Cuautitlan Izcalli C. P. 54740, Mexico; (J.M.A.-H.); (R.M.-R.)
| | - Perla García-Casillas
- Institute of Engineering and Technology, Autonomous University of the City of Juarez, UACJ, City Juarez, Chihuahua 32584, Mexico;
| | - María Inés Nicolás-Vázquez
- UNAM–FESC, Campus 1, Chemical Sciences Department, Cuautitlan Izcalli C. P. 54740, Mexico; (J.M.A.-H.); (R.M.-R.)
| | - René Miranda-Ruvalcaba
- UNAM–FESC, Campus 1, Chemical Sciences Department, Cuautitlan Izcalli C. P. 54740, Mexico; (J.M.A.-H.); (R.M.-R.)
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15
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Gbashi S, Madala NE, De Saeger S, De Boevre M, Njobeh PB. Numerical optimization of temperature-time degradation of multiple mycotoxins. Food Chem Toxicol 2019; 125:289-304. [DOI: 10.1016/j.fct.2019.01.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 01/10/2019] [Accepted: 01/11/2019] [Indexed: 12/26/2022]
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16
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Asadi M. In-syringe vortex-assisted emulsification microextraction with solidified floating organic drop for the separation of aflatoxins from feed before their determination by HPLC. SEPARATION SCIENCE PLUS 2018. [DOI: 10.1002/sscp.201700033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Mohammad Asadi
- Health Sciences Research Center; Torbat Heydariyeh University of Medical Sciences; Torbat Heydariyeh Iran
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17
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Loi M, Fanelli F, Zucca P, Liuzzi VC, Quintieri L, Cimmarusti MT, Monaci L, Haidukowski M, Logrieco AF, Sanjust E, Mulè G. Aflatoxin B₁ and M₁ Degradation by Lac2 from Pleurotus pulmonarius and Redox Mediators. Toxins (Basel) 2016; 8:toxins8090245. [PMID: 27563923 PMCID: PMC5037472 DOI: 10.3390/toxins8090245] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 08/03/2016] [Accepted: 08/15/2016] [Indexed: 02/07/2023] Open
Abstract
Laccases (LCs) are multicopper oxidases that find application as versatile biocatalysts for the green bioremediation of environmental pollutants and xenobiotics. In this study we elucidate the degrading activity of Lac2 pure enzyme form Pleurotus pulmonarius towards aflatoxin B1 (AFB1) and M1 (AFM1). LC enzyme was purified using three chromatographic steps and identified as Lac2 through zymogram and LC-MS/MS. The degradation assays were performed in vitro at 25 °C for 72 h in buffer solution. AFB1 degradation by Lac2 direct oxidation was 23%. Toxin degradation was also investigated in the presence of three redox mediators, (2,2′-azino-bis-[3-ethylbenzothiazoline-6-sulfonic acid]) (ABTS) and two naturally-occurring phenols, acetosyringone (AS) and syringaldehyde (SA). The direct effect of the enzyme and the mediated action of Lac2 with redox mediators univocally proved the correlation between Lac2 activity and aflatoxins degradation. The degradation of AFB1 was enhanced by the addition of all mediators at 10 mM, with AS being the most effective (90% of degradation). AFM1 was completely degraded by Lac2 with all mediators at 10 mM. The novelty of this study relies on the identification of a pure enzyme as capable of degrading AFB1 and, for the first time, AFM1, and on the evidence that the mechanism of an effective degradation occurs via the mediation of natural phenolic compounds. These results opened new perspective for Lac2 application in the food and feed supply chains as a biotransforming agent of AFB1 and AFM1.
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Affiliation(s)
- Martina Loi
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), 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 of Italy (CNR), via Amendola 122/O, Bari 70126, Italy.
| | - Paolo Zucca
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Complesso Universitario, SP Monserrato-Sestu Km 0.700, Monserrato 09042, Italy.
| | - Vania C Liuzzi
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), via Amendola 122/O, Bari 70126, Italy.
| | - Laura Quintieri
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), via Amendola 122/O, Bari 70126, Italy.
| | - Maria T Cimmarusti
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), via Amendola 122/O, Bari 70126, Italy.
- Department of Economics, University of Foggia, via Napoli 25, Foggia 71122, Italy.
| | - Linda Monaci
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), via Amendola 122/O, Bari 70126, Italy.
| | - Miriam Haidukowski
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), via Amendola 122/O, Bari 70126, Italy.
| | - Antonio F Logrieco
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), via Amendola 122/O, Bari 70126, Italy.
| | - Enrico Sanjust
- Department of Biomedical Sciences, University of Cagliari, Cittadella Universitaria, Complesso Universitario, SP Monserrato-Sestu Km 0.700, Monserrato 09042, Italy.
| | - Giuseppina Mulè
- Institute of Sciences of Food Production, National Research Council of Italy (CNR), via Amendola 122/O, Bari 70126, Italy.
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18
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Escobedo-González R, Méndez-Albores A, Villarreal-Barajas T, Aceves-Hernández JM, Miranda-Ruvalcaba R, Nicolás-Vázquez I. A Theoretical Study of 8-Chloro-9-Hydroxy-Aflatoxin B₁, the Conversion Product of Aflatoxin B₁ by Neutral Electrolyzed Water. Toxins (Basel) 2016; 8:E225. [PMID: 27455324 PMCID: PMC4963857 DOI: 10.3390/toxins8070225] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Accepted: 07/14/2016] [Indexed: 01/16/2023] Open
Abstract
Theoretical studies of 8-chloro-9-hydroxy-aflatoxin B₁ (2) were carried out by Density Functional Theory (DFT). This molecule is the reaction product of the treatment of aflatoxin B₁ (1) with hypochlorous acid, from neutral electrolyzed water. Determination of the structural, electronic and spectroscopic properties of the reaction product allowed its theoretical characterization. In order to elucidate the formation process of 2, two reaction pathways were evaluated-the first one considering only ionic species (Cl⁺ and OH(-)) and the second one taking into account the entire hypochlorous acid molecule (HOCl). Both pathways were studied theoretically in gas and solution phases. In the first suggested pathway, the reaction involves the addition of chlorenium ion to 1 forming a non-classic carbocation assisted by anchimeric effect of the nearest aromatic system, and then a nucleophilic attack to the intermediate by the hydroxide ion. In the second studied pathway, as a first step, the attack of the double bond from the furanic moiety of 1 to the hypochlorous acid is considered, accomplishing the same non-classical carbocation, and again in the second step, a nucleophilic attack by the hydroxide ion. In order to validate both reaction pathways, the atomic charges, the highest occupied molecular orbital and the lowest unoccupied molecular orbital were obtained for both substrate and product. The corresponding data imply that the C₉ atom is the more suitable site of the substrate to interact with the hydroxide ion. It was demonstrated by theoretical calculations that a vicinal and anti chlorohydrin is produced in the terminal furan ring. Data of the studied compound indicate an important reduction in the cytotoxic and genotoxic potential of the target molecule, as demonstrated previously by our research group using different in vitro assays.
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Affiliation(s)
- René Escobedo-González
- UNAM-FESC. Campus 1. Chemical Sciences Department, Cuautitlan Izcalli, C. P. 54740, Mexico.
| | - Abraham Méndez-Albores
- UNAM-FESC. Campus 4. Multidisciplinary Research Unit L14 (Food, Mycotoxins and Mycotoxicosis), Cuautitlan Izcalli 54714, Mexico.
| | | | | | - René Miranda-Ruvalcaba
- UNAM-FESC. Campus 1. Chemical Sciences Department, Cuautitlan Izcalli, C. P. 54740, Mexico.
| | - Inés Nicolás-Vázquez
- UNAM-FESC. Campus 1. Chemical Sciences Department, Cuautitlan Izcalli, C. P. 54740, Mexico.
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Aiko V, Edamana P, Mehta A. Decomposition and detoxification of aflatoxin B1 by lactic acid. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:1959-1966. [PMID: 26095453 DOI: 10.1002/jsfa.7304] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2015] [Revised: 05/25/2015] [Accepted: 06/07/2015] [Indexed: 06/04/2023]
Abstract
BACKGROUND A degradation study of aflatoxin B1 (AFB1) was carried out using a combination of physical and chemical methods. AFB1 was heated at 80 °C in the presence of acetic, citric and lactic acids for various time periods. The cytotoxicity of the degraded AFB1 and its products were determined by MTT assay. RESULTS The results showed that among the three organic acids lactic acid was most efficient in degrading AFB1. Although complete degradation was not observed, up to 85% degradation of AFB1 was obtained when heated for 120 min. Degradation of AFB1 was confirmed by the reduced toxicity on HeLa cells using MTT assay. Treatment with lactic acid resulted in the conversion of AFB1 into two degradation products. These products were observed at lower retention factors of 0.63 and 0.38, which were identified as AFB2 and AFB2a, respectively. The cytotoxicity of AFB2a exhibited much reduced toxicity on HeLa cells compared to that of AFB1. CONCLUSION The results have shown the efficiency of lactic acid in degrading AFB1. This study suggest that lactic acid may be considered for use in the food and feed industry since it is present naturally in food and is considered safe.
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Affiliation(s)
- Visenuo Aiko
- School of Biosciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
| | - Prasad Edamana
- Department of Chemistry, Indian Institute of Technology Madras, 600036, Tamil Nadu, India
| | - Alka Mehta
- School of Biosciences and Technology, VIT University, Vellore 632014, Tamil Nadu, India
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20
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Gupta S, Arora R, Sinha N, Alam MI, Haider MA. Mechanistic insights into the ring-opening of biomass derived lactones. RSC Adv 2016. [DOI: 10.1039/c5ra22832h] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Density functional theory calculations suggest the formation of an oxocarbenium ion intermediate in acid catalyzed ring-opening reactions of biomass derived lactones, which may play an important role in determining it's reactivity.
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Affiliation(s)
- Shelaka Gupta
- Renewable Energy and Chemicals Laboratory
- Department of Chemical Engineering
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - Rishabh Arora
- Renewable Energy and Chemicals Laboratory
- Department of Chemical Engineering
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | | | - Md. Imteyaz Alam
- Renewable Energy and Chemicals Laboratory
- Department of Chemical Engineering
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
| | - M. Ali Haider
- Renewable Energy and Chemicals Laboratory
- Department of Chemical Engineering
- Indian Institute of Technology Delhi
- New Delhi-110016
- India
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21
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Jardon-Xicotencatl S, Díaz-Torres R, Marroquín-Cardona A, Villarreal-Barajas T, Méndez-Albores A. Detoxification of Aflatoxin-Contaminated Maize by Neutral Electrolyzed Oxidizing Water. Toxins (Basel) 2015; 7:4294-314. [PMID: 26512692 PMCID: PMC4626735 DOI: 10.3390/toxins7104294] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2015] [Revised: 10/14/2015] [Accepted: 10/15/2015] [Indexed: 01/05/2023] Open
Abstract
Aflatoxins, a group of extremely toxic mycotoxins produced by Aspergillus flavus, A. parasiticus and A. nomius, can occur as natural contaminants of certain agricultural commodities, particularly maize. These toxins have been shown to be hepatotoxic, carcinogenic, mutagenic and cause severe human and animal diseases. The effectiveness of neutral electrolyzed oxidizing water (NEW) on aflatoxin detoxification was investigated in HepG2 cells using several validation methodologies such as the 3-(4,5-dimethylthiazol-2-yl)-2,5- diphenyltetrazolium bromide assay, the induction of lipid peroxidation, the oxidative damage by means of glutathione modulation, the Ames test and the alkaline Comet assay. Our results showed that, after the aflatoxin-contaminated maize containing 360 ng/g was soaked in NEW (60 mg/L available chlorine, pH 7.01) during 15 min at room temperature, the aflatoxin content did not decrease as confirmed by the immunoaffinity column and ultra performance liquid chromatography methods. Aflatoxin fluorescence strength of detoxified samples was similar to untreated samples. However, aflatoxin-associated cytotoxicity and OPEN ACCESS Toxins 2015, 7 4295 genotoxicity effects were markedly reduced upon treatment. According to these results, NEW can be effectively used to detoxify aflatoxin-contaminated maize.
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Affiliation(s)
- Samantha Jardon-Xicotencatl
- UNAM-FESC. Campus 4. Multidisciplinary Research Unit L14 (Food, Mycotoxins and Mycotoxicosis), Cuautitlan Izcalli 54714, Mexico.
| | - Roberto Díaz-Torres
- UNAM-FESC. Campus 4. Multidisciplinary Research Unit L9 (Toxicology and Genetics), Cuautitlan Izcalli 54714, Mexico.
| | | | | | - Abraham Méndez-Albores
- UNAM-FESC. Campus 4. Multidisciplinary Research Unit L14 (Food, Mycotoxins and Mycotoxicosis), Cuautitlan Izcalli 54714, Mexico.
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22
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Biotransformation of aflatoxin B1 and aflatoxin G1 in peanut meal by anaerobic solid fermentation of Streptococcus thermophilus and Lactobacillus delbrueckii subsp. bulgaricus. Int J Food Microbiol 2015; 211:1-5. [DOI: 10.1016/j.ijfoodmicro.2015.06.021] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2015] [Revised: 06/09/2015] [Accepted: 06/24/2015] [Indexed: 11/18/2022]
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23
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Hashemi M, Taherimaslak Z, Rashidi S. Enhanced spectrofluorimetric determination of aflatoxin M1 in liquid milk after magnetic solid phase extraction. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 128:583-590. [PMID: 24691373 DOI: 10.1016/j.saa.2014.02.108] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2013] [Revised: 02/20/2014] [Accepted: 02/23/2014] [Indexed: 06/03/2023]
Abstract
A simple and sensitive method using magnetic solid phase extraction (MSPE) followed by spectrofluorimetric detection has been developed for separation and determination of aflatoxin M1 (AFM1) in liquid milk. The method is based on the extraction of AFM1 on the modified magnetic nanoparticles (MMNPs) and subsequent derivatization of extracted AFM1 to AFM1 hemi-acetal derivative (AFM2a) by reaction with trifluoroacetic acid (TFA) for spectrofluorimetric detection. Magnetic nanoparticles (MNPs) coated by 3-(trimethoxysilyl)-1-propantiol (TMSPT) and modified with 2-amino-5-mercapto-1,3,4-thiadiazole (AMT) were used as adsorbent in MSPE procedure. Influential parameters affecting the extraction efficiency were investigated and optimized. Under the optimum conditions the calibration curve for AFM1 determination showed good linearity in the range 0.030-10.0 μg L(-1) (R(2) = 0.9991). The repeatability and reproducibility (RSD%) for 0.050 μg L(-1) of AFM1 were 4.5% and 5.3%, respectively and limit of detection limit (S/N = 3) was estimated to be 0.010 μg L(-1). The developed method was successfully applied for extraction of AFM1 from spiked liquid milk and natural contaminated liquid milk. The good spiked recoveries ranging from 91.6% to 96.1% were obtained. The results demonstrated that the developed method is simple, inexpensive, accurate and remarkably free from interference effects.
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Affiliation(s)
- Mahdi Hashemi
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran.
| | - Zohreh Taherimaslak
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Somayeh Rashidi
- Department of Chemistry, Payam Noor University, Hamedan, Iran
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24
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Gao SM, Wang HY, Lin YX. Surface-enhanced Raman Scattering of Aflatoxin B1 on Silver by DFT Method. CHINESE J CHEM PHYS 2014. [DOI: 10.1063/1674-0068/27/02/131-136] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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25
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Hashemi M, Taherimaslak Z, Rashidi S. Application of magnetic solid phase extraction for separation and determination of aflatoxins B ₁ and B₂ in cereal products by high performance liquid chromatography-fluorescence detection. J Chromatogr B Analyt Technol Biomed Life Sci 2014; 960:200-8. [PMID: 24814005 DOI: 10.1016/j.jchromb.2014.03.035] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2013] [Revised: 03/22/2014] [Accepted: 03/28/2014] [Indexed: 11/25/2022]
Abstract
A simple and sensitive method based on the magnetic solid phase extraction with modified magnetic nanoparticles followed by high performance liquid chromatography with fluorescence detection has been developed for extraction and determination of aflatoxins B1 (AFB1) and B2 (AFB2) in cereal products. Magnetic nanoparticle coated with 3-(trimethoxysilyl)-1-propanthiol (TMSPT) and modified with 2-amino-5-mercapto-1,3,4-thiadiazole (AMT) was used as an antibody-free adsorbent. Under the optimal conditions, the calibration curves for AFB1 and AFB2 were linear in the ranges of 0.2-15 μg L(-1) and 0.04-3 μg L(-1), respectively. Detection limit was 0.041 μg L(-1) for AFB1 and 0.013 μg L(-1) for AFB2. The proposed method was successfully applied to the determination of AFB1 and AFB2 in spiked corn and rice samples with an average recovery of 93.5%. The results demonstrated that the developed method is simple, rapid, inexpensive, accurate and remarkably free from interference effects.
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Affiliation(s)
- Mahdi Hashemi
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran.
| | - Zohreh Taherimaslak
- Department of Analytical Chemistry, Faculty of Chemistry, Bu-Ali Sina University, Hamedan, Iran
| | - Somayeh Rashidi
- Department of Chemistry, Payam Noor University, Hamedan, Iran
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26
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Hashemi M, Taherimaslak Z. Determination of aflatoxin M1 in liquid milk using high performance liquid chromatography with fluorescence detection after magnetic solid phase extraction. RSC Adv 2014. [DOI: 10.1039/c4ra04254a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A new and sensitive method based on magnetic solid phase extraction (MSPE) with antibody-free modified magnetic nanoparticles (MMNPs) followed by high performance liquid chromatography with post-column derivatization and fluorescence detection (HPLC-PCD-FD) has been developed for the separation and determination of aflatoxin M1 (AFM1) in liquid milk.
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Affiliation(s)
- Mahdi Hashemi
- Department of Analytical Chemistry
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan, Iran
| | - Zohreh Taherimaslak
- Department of Analytical Chemistry
- Faculty of Chemistry
- Bu-Ali Sina University
- Hamedan, Iran
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27
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Wu X, Gao S, Wang JS, Wang H, Huang YW, Zhao Y. The surface-enhanced Raman spectra of aflatoxins: spectral analysis, density functional theory calculation, detection and differentiation. Analyst 2012; 137:4226-34. [DOI: 10.1039/c2an35378d] [Citation(s) in RCA: 80] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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