基于硅-au-ag Janus纳米复合材料的黄曲霉毒素B1的SERS感应传感器检测

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2024-12-03 DOI:10.1016/j.foodchem.2024.142325

Xuan Fu , Limei Yin , Yang Zhang , Ruiyun Zhou , Hesham R. El-Seedi , Xiaobo Zou , Yunyun Gong , Zhiming Guo

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引用次数: 0

摘要

黄曲霉毒素B1 （AFB1）是玉米中普遍存在的一种污染物，对人类健康构成重大威胁。本研究设计了以本征拉曼信号作为信号探针，SiO2@AgNPs作为捕获探针的AuAg Janus NPs。通过互补碱基对对两者进行耦合，确保贵金属纳米颗粒的有序、可控分布。AuAg Janus NPs和高度稳定的SiO2载体有望避免利用贵金属纳米颗粒间隙效应对电磁场进行集中时，由于使用信号分子和形成随机聚集体而对稳定性造成的不利影响。本研究改善了AgNPs高表面能对其均匀性的负面影响，同时增强了AuAg Janus NPs的pH适应性。在AFB1存在下，复合材料崩解，SERS强度与AFB1浓度呈负相关，对AFB1的检测具有高灵敏度和稳定性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

SERS aptasensor detection of aflatoxin B1 based on silicon-au-ag Janus nanocomposites

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SERS aptasensor detection of aflatoxin B1 based on silicon-au-ag Janus nanocomposites

Aflatoxin B1 (AFB1) is a prevalent contaminant in maize, posing significant threats to human health. This study designed AuAg Janus NPs with intrinsic Raman signals as signal probes and SiO₂@AgNPs as capture probes. The two were coupled through complementary base pairing to ensure the ordered, controlled distribution of noble metal nanoparticles. The AuAg Janus NPs and the highly stable SiO₂ carrier is expected to avoid the adverse effects on stability caused by using signal molecules and the formation of random aggregates when using the noble metal nanoparticle gap effect to concentrate on the electromagnetic field. This study improved the negative impact of AgNPs' high surface energy on their uniformity, while enhancing the pH adaptability of AuAg Janus NPs. In the presence of AFB1, the composite disintegrates, and the SERS intensity showed a negative correlation with AFB1 concentration, enabling highly sensitive and stable detection of AFB1.

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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.