Dispersive micro solid phase extraction based ionic liquid functionalized ZnO nanoflowers couple with chromatographic methods for rapid determination of aflatoxins in wheat and peanut samples. (15th October 2022)

• Record Type: Journal Article
• Authors: Zhu, Afang; Jiao, Tianhui; Ali, Shujat; Xu, Yi; Ouyang, Qin; Chen, Quansheng
• Is Part Of: Food chemistry. Volume 391(2022)
• Publication Date: 2022-10-15
• Subjects: Food analysis -- Ionic liquids functionalized ZnO nanoflowers -- Aflatoxins (AFs) -- Dispersive micro solid phase extraction (D-µSPE) -- Wheat and peanut; Food -- Analysis -- Periodicals; Food -- Composition -- Periodicals; 664
• DOI: 10.1016/j.foodchem.2022.133277
• Languages: English
• ISSNs: 0308-8146

Abstract

Highlights: ZnO NFs was synthesized and functionalized to obtain [HMIM][PF6 ]@ZnO NFs. The [HMIM][PF6 ]@ZnO NFs has high affinity towards the considered aflatoxins. The D-µSPE showed excellent linearity, precise data, low LOD and LOQ. Upon applying on real samples, the developed D-µSPE exhibited excellent performance. Abstract: Aflatoxins (AFs) contaminate agricultural products in a wide range of ways during their harvesting, storage and transport. Therefore, the detection of AFs has certain practical significance. Herein, a dispersive micro solid phase extraction (D-µSPE) technology was constructed based on 1-hexyl-3-methylimidazolium hexafluorophosphate ([HMIM][PF6 ]) fabricated ZnO nanoflowers for AFs extraction from food matrix before HPLC procedure. The key parameters affecting the extraction efficiency were studied. Under optimal experimental conditions, the method showed excellent linearity with high correlation coefficients (≥0.994). LOD and LOQ were 0.034 and 0.114 μg/kg for AFB1, 0.024 and 0.082 μg/kg for AFB2, 0.067 and 0.226 μg/kg for AFG1 and 0.025 and 0.084 μg/kg for AFG2. The recovery of actual samples spiked with analytes (at 5, 15 and 20 μg/kg) were from 93.8 to 105.1%. Overall, an accurate AFs analysis method was developed and could be applied to the determination of AFs in various food and agricultural products.