基于聚多巴胺包覆的磁性螺旋藻纳米复合材料的高效磁性分散固相萃取法用于提取开心果中的黄曲霉毒素。
Polydopamine-coated magnetic Spirulina nanocomposite for efficient magnetic dispersive solid-phase extraction of aflatoxins in pistachio.
机构信息
Mycotoxins Research Laboratory, Agricultural Research Education and Extension Organization (AREEO), Iranian Research Institute of Plant Protection, Iran.
Department of Chemistry, Faculty of Science, University of Qom, Qom 3716146611, Iran.
出版信息
Food Chem. 2022 May 30;377:131967. doi: 10.1016/j.foodchem.2021.131967. Epub 2021 Dec 29.
An efficient adsorbent was synthesized and used in magnetic dispersive solid phase extraction (MDSPE) of aflatoxins B1, B2, G1, and G2 at trace levels in pistachio prior to analysis by HPLC equipped with a fluorescence detector. Spirulina (Sp) algae was first magnetized, followed by surface modification with dopamine (Dp). The adsorbent was characterized using FT-IR, XRD, FE-SEM, EDX, VSM, and BET analyses. The effects of different analytical parameters on the extraction performance were evaluated. Under optimal conditions, good limits of detection (LODs) and quantifications (LOQs) were achieved in the ranges of 0.02-0.07 and 0.06-0.21 ng g, respectively. The RSDs were 5.9, 6.3, 5.6, and 7.3% for AFB1, G1, B2, and G2, respectively. The proposed method was successfully used to determine AFs in pistachio samples and acceptable recoveries in the range of 72-95% were obtained.
一种高效的吸附剂被合成，并用于高效液相色谱-荧光检测法分析开心果中痕量的黄曲霉毒素 B1、B2、G1 和 G2 之前的磁性分散固相萃取（MDSPE）。首先对螺旋藻（Sp）藻类进行磁化，然后用多巴胺（Dp）进行表面修饰。采用 FT-IR、XRD、FE-SEM、EDX、VSM 和 BET 分析对吸附剂进行了表征。考察了不同分析参数对萃取性能的影响。在最佳条件下，在 0.02-0.07 和 0.06-0.21 ng g 范围内分别获得了良好的检测限（LOD）和定量限（LOQ）。对于 AFB1、G1、B2 和 G2，RSD 分别为 5.9%、6.3%、5.6%和 7.3%。该方法成功用于测定开心果样品中的 AFs，回收率在 72-95%范围内。
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