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A facile one-pot green synthesis of β-cyclodextrin decorated porous graphene nanohybrid as a highly efficient adsorbent for extracting aflatoxins from maize and animal feeds

•Supramolecular nanohybrid consist of β-CD and 3D-graphene was fabricated in one-step.•Adsorbent possess simultaneous properties of β-CD and porous graphene.•Method showed integrated sample clean-up, extraction and preconcentration of AFs.•Method advantages: Simplicity, High efficiency, Low LODs, Lo...

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Bibliographic Details
Published in:Food chemistry 2020-05, Vol.311, p.125747-125747, Article 125747
Main Authors: Tezerji, Najmeh Sheibani, Foroughi, Mohammad Mehdi, Bezenjani, Rasoul Rezaei, Jandaghi, Nezhat, Rezaeipour, Ebrahim, Rezvani, Forogh
Format: Article
Language:English
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Summary:•Supramolecular nanohybrid consist of β-CD and 3D-graphene was fabricated in one-step.•Adsorbent possess simultaneous properties of β-CD and porous graphene.•Method showed integrated sample clean-up, extraction and preconcentration of AFs.•Method advantages: Simplicity, High efficiency, Low LODs, Low amount of adsorbent. In this paper, β-cyclodextrin (β-CD) supported on porous graphene nanohybrid (β-CDPG) was obtained by self-assembly of functionalized graphene nanosheets into a three-dimensional network in the presence of ascorbic acid via an in situ graphene oxide reduction and β-CD functionalization process during a hydrothermal reaction. The prepared supramolecular nanohybrid was further packed into a reusable syringe filter holder and applied as an adsorbent for solid phase extraction of four aflatoxins (B1, B2, G1, G2). Under optimal conditions, the detection limits and linear dynamic ranges were achieved in the range of 0.0075–0.030 μg kg−1 and 0.025–100 μg kg−1, respectively and the relative standard deviations were less than 6.1%. Good recoveries were observed for analyzing target AFs in maize and cereal-based chicken feed samples ranged from 90.5 to 105%. The method offered simultaneous advantages of high supramolecular recognition and enrichment capability of β-CD and the high specific surface area of the porous graphene.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2019.125747