中文摘要：霉菌毒素会带来经济损失及巨大的安全隐患。本文研究了用表面增强拉曼散射(SERS)的便携式拉曼系统快速检测谷物中的脱氧雪腐镰刀菌烯醇(DON)的可行性。研究认为，因其高灵敏度和选择性，可以开发出有效的用于多种谷物中DON残留的基于SERS技术的田间检测方法。
外文摘要：Mycotoxin results in financial damage and considerable safety risks. In this paper, the possibility of portable Raman system-based surface-enhanced Raman scattering (SERS) for a rapid detection of deoxynivalenol (DON) a mycotoxin in cereals was investigated. Under an optimized condition, SERS analysis for pure DON solution has a wide dynamic concentration range from 10−7 M to 10−2 M with the limit of detection (LOD) down to 100 nM. Density functional theory (DFT) analysis at the level of B3LYP/6-311 ++ G(d, p) was also preformed for vibrational assignment. For practical application, the LOD of the proposed Raman method for both DON-contaminated corns and kidney beans were validated as 10−6 M and the LOD for DON-contaminated oats was 10−4 M. As a perspective, the SERS-based technology could be developed into an alternatively promising assay for on-field detection of DON residues at various cereals due to it high sensitivity and selectivity.
外文关键词：AgNPs；Surface enhanced Raman scattering (SERS)；Deoxynivalenol
作者：Yuan, J；Sun, CW；Guo, XY；Yang, TX；Wang, H；Fu, SY；Li, CC；Yang, HF
作者单位：Shanghai Normal Univ
期刊名称：FOOD CHEMISTRY
期刊影响因子：4.052
出版年份：2017
出版刊次：4
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