Innovative hierarchical porous covalent organic frameworks for enrichment and purification of aflatoxins

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2025-10-16 DOI:10.1016/j.foodchem.2025.146739

Chuanyun Peng , Jiahao Huang , Shaowen Zhang , Chunlai Wu , Xiaojie Zhao , Qing Zhang

引用次数: 0

Abstract

For trace content of aflatoxins determination in maize, it is important to exploit an effective adsorbent for sample extraction and purification. A hierarchical porous covalent organic framework (HPCOF) was synthesized using a solvothermal method. The HPCOF had a pore size distribution of 1.7 to 33.2 nm, which could offer molecular interaction sites between HPCOFs and aflatoxins. The extraction capacities was observed from 124 to 184 μg·g⁻¹. Utilizing as adsorbent, a new determination for aflatoxins including AFB1, AFB2, AFG1, and AFG2 in maize was established coupled with high-performance liquid chromatography-fluorescence detector (HPLC-FLD). The linear range was 0.1–50 ng·g⁻¹. The limits of detection (LODs) were 0.033–0.16 ng·g⁻¹ (with RSDs 2.4–8.5 %, n = 5). The developed analysis method was successfully used for detect trace aflatoxins in maize with the recoveries ranged from 81.5 to 111.6 %.

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创新层次多孔共价有机框架富集和纯化黄曲霉毒素

在测定玉米中痕量黄曲霉毒素的过程中，寻找有效的吸附剂进行样品的提取和纯化是十分重要的。采用溶剂热法合成了层次化多孔共价有机骨架（HPCOF）。HPCOF的孔径分布为1.7 ~ 33.2 nm，可提供HPCOF与黄曲霉毒素相互作用的分子位点。提取量为124 ~ 184 μg·g−1。利用高效液相色谱-荧光检测器（HPLC-FLD）作为吸附剂，建立了测定玉米中黄曲霉毒素AFB1、AFB2、AFG1和AFG2的新方法。线性范围为0.1 ~ 50 ng·g−1。检出限（lod）为0.033 ~ 0.16 ng·g−1，rsd为2.4 ~ 8.5 %,n = 5。该方法可用于玉米中痕量黄曲霉毒素的检测，回收率为81.5 ~ 111.6 %。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.