新型先进材料和磁性固相提取作为样品制备中的方法,以增强花生中 ochratoxin A 的分析
Bingchen Wang1, Yifan Wang1, Xiuyuan Zhang1
1Hebei Key Laboratory of Quality & Safety Analysis-testing for Agro-products and Food, Hebei North University, Zhangjiakou 075000, Hebei, China. hekuo7825@163.com.
Analytical methods : advancing methods and applications
|April 22, 2024
概括
一种新的磁性纳米材料增强了食品中的Ochratoxin A (OTA) 检测. 这种磁性固相提取 (MSPE) 方法为准确的真菌毒素分析提供了高回收率和灵敏度.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 食品安全 食品安全
背景情况:
- 毒素A (OTA) 是一种在农产品,如果汁和葡萄酒中普遍存在的真菌毒素.
- 准确检测OTA对于确保食品安全和预防健康风险至关重要.
研究的目的:
- 开发和评估一种磁性固相提取 (MSPE) 方法,使用一种新的磁性金属有机框架 (MOF) 来增强OTA检测.
- 优化MSPE程序,以有效预处理食品样本.
主要方法:
- 一个三层核心外磁性纳米材料的合成:Fe3O4@SiO2@UiO-66-NH2.2.
- 使用X射线衍射 (XRD),扫描电子显微镜 (SEM) 和Zetasizer进行纳米材料的表征.
- 优化MSPE参数,包括材料剂量,pH值,剂成分和脱落条件.
- 使用高性能液态染色学 (HPLC) 分析OTA.
主要成果:
- 成功合成并对具有纳米尺寸特征的Fe3O4@SiO2@UiO-66-NH2纳米材料进行了表征.
- 优化的MSPE条件产生了高恢复率 (95.83-101.5%) 和较低的相对标准偏差 (<5%).
- 结合的MSPE-HPLC方法实现了OTA的低检测极限 (0.3μg kg-1).
结论:
- 使用磁性MOF材料开发的MSPE方法对于OTA预处理是简单的,具体的和有效的.
- 这种方法显著提高了食品矩阵中OTA测定的灵敏度.
- 该方法显示了用于常规OTA检测和分析的广泛潜力.
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