电喷法制备新型 Ag 涂层纳米纤维作为 SERS 平台，用于食品中亚硝酸盐的灵敏选择性检测。
Novel Ag-coated nanofibers prepared by electrospraying as a SERS platform for ultrasensitive and selective detection of nitrite in food.
机构信息
College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China.
College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
出版信息
Food Chem. 2023 Jun 30;412:135563. doi: 10.1016/j.foodchem.2023.135563. Epub 2023 Jan 27.
Nitrite is commonly used as a preservative and color fixative in the meat industry. However, the risk of it transforming into N-nitrosamine restricts its intake. Herein, a novel sensitive Ag-coated nanofiber surface-enhanced Raman scattering (SERS) platform was developed for rapid nitrite detection. The electrospraying technique was firstly used to assemble Ag nanoparticles (NPs) on the nanofibers to obtaine SERS platform. The homogeneity and long-term stability of the SERS platform were evaluated. The limit of detection (LOD) of the SERS platform was estimated to be 2.216 × 10 mol/L, corresponding to 15.29 ng·L and good linearity was shown between the relative SERS intensity and nitrite concentration range of 10-1 to 10 mol/L. The Ag-coated nanofiber SERS platform was utilized to assay-five common nitrite foods, and the results provided valid evidence for the compatibility of SERS platform in quantitative nitrite detection.
亚硝酸盐在肉类行业中通常被用作防腐剂和颜色固定剂。然而，它转化为亚硝胺的风险限制了其摄入量。在此，开发了一种新颖的灵敏 Ag 涂层纳米纤维表面增强拉曼散射（SERS）平台，用于快速检测亚硝酸盐。首先使用静电纺丝技术将 Ag 纳米颗粒（NPs）组装到纳米纤维上，以获得 SERS 平台。评估了 SERS 平台的均一性和长期稳定性。SERS 平台的检测限（LOD）估计为 2.216×10-6 mol/L，对应于 15.29ng·L，并且在 10-1 至 10 mol/L 的亚硝酸盐浓度范围内显示出良好的线性关系。Ag 涂层纳米纤维 SERS 平台用于测定五种常见的亚硝酸盐食品，结果为 SERS 平台在定量亚硝酸盐检测中的兼容性提供了有效证据。
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