创新层次多孔共价有机框架富集和纯化黄曲霉毒素

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

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引用次数: 0

摘要

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 %。

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

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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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.