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最优合成 Au@Ag 纳米粒子作为等离子体放大器，通过客体结合金属 SERS 方法检测痕量黄曲霉毒素 B1。

Optimum synthesis of Au@Ag nanoparticle as plasma amplifier to detect trace concentration of AFB1 via object-binder-metal SERS method.

机构信息

College of Optical and Electronic Technology, China Jiliang University, 310018, Hangzhou, China.

College of Horticulture & Forestry Sciences, Huazhong Agricultural University, Key Laboratory of Horticultural Plant Biology, Ministry of Education, 430070, Wuhan, China.

出版信息

J Food Drug Anal. 2022 Nov 23;30(4):603-613. doi: 10.38212/2224-6614.3418.

DOI:10.38212/2224-6614.3418
PMID:36753364
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9910294/
Abstract

The problem of aflatoxin contamination emerged gradually in the field of food safety. Surface-enhanced Raman spectroscopy (SERS) is an ultra-sensitive and non-destructive spectroscopy technology with extensive application prospects in the detection field. In this paper, with the detection of AFB1 as the target, Au@Ag NPs substrate with uniform morphology and strong SERS effect was prepared. Furthermore, the intermediates formed by hydrogen bonding between AFB1 and melamine facilitate the binding of toxin molecules to the substrate. Moreover, the AFB1-melamine-Au@Ag NPs detection system was established by optimizing the melamine dosage, and the limit of detection can reach 10 mol/L (M). In this method, AFB1 (concentration range of 10 M - 10 M) in tea oil, the Raman signal intensity of AFB1 shows an excellent linear, logarithmic relationship, and the correlation coefficient is 0.9685. Therefore, this work has achieved simple, sensitive, and stable AFB1 detection and has broad application potential in food safety detection.

摘要

黄曲霉毒素污染问题逐渐出现在食品安全领域。表面增强拉曼光谱（SERS）是一种超灵敏、非破坏性的光谱技术，在检测领域具有广泛的应用前景。本文以 AFB1 的检测为目标，制备了具有均匀形态和强 SERS 效应的 Au@Ag NPs 基底。此外，AFB1 与三聚氰胺之间形成的氢键中间体促进了毒素分子与基底的结合。通过优化三聚氰胺用量，建立了 AFB1-三聚氰胺-Au@Ag NPs 检测体系，检测限可达到 10 mol/L（M）。在该方法中，对茶油中的 AFB1（浓度范围为 10 M-10 M）进行检测，AFB1 的拉曼信号强度呈现出极好的线性、对数关系，相关系数为 0.9685。因此，本工作实现了对 AFB1 的简单、灵敏、稳定检测，在食品安全检测中具有广阔的应用潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/d5d9/9910294/8dc8a788cb79/jfda-30-04-603f8.jpg
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