College of Chemistry and Materials Science, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, Fujian Key Laboratory of Polymer Materials, Fujian Normal University, Fuzhou, 350007, China.
College of Life Sciences, The Public Service Platform for Industrialization Development Technology of Marine Biological Medicine and Product of State Oceanic Administration, Fujian Normal University, Fuzhou, 350117, PR China.
Anal Chim Acta. 2020 Apr 1;1104:199-206. doi: 10.1016/j.aca.2020.01.017. Epub 2020 Jan 27.
We have successfully prepared a highly sensitive sandwich nanosensor combined FeO and Au@ATP@Ag nanorods for histamine detection based on surface-enhanced Raman spectroscopy (SERS). The FeO beads with -COOH served as a capture part to enrich histamine. The Au@ATP@Ag core-shell nanorods functionalized with Nalpha,Nalpha-Bis(carboxymethyl)-l-lysine (AB-NTA) were then used to connect with the imidazolyl group of histamine, simultaneously the internal standard 4-aminothiophenol (4-ATP) in the core-shell structure was used as the SERS signal. PLS regression model based on concentration range 10-10mol/L showed a linear trend with R = 0.9907. Our new approach can quickly and reliably determine histamine in fish sample and RAW264.7 cell lysates. This protocol for histamine extraction and SERS analysis enables the development of ultra-sensitive method for histamine detection.
我们成功地制备了一种基于表面增强拉曼光谱(SERS)的高度敏感的夹心纳米传感器,该传感器结合了 FeO 和 Au@ATP@Ag 纳米棒用于组胺检测。具有 -COOH 的 FeO 珠用作富集组胺的捕获部分。然后,用 Nalpha,Nalpha-双(羧甲基)-l-赖氨酸(AB-NTA)功能化的 Au@ATP@Ag 核壳纳米棒用于与组胺的咪唑基连接,同时核壳结构中的内标 4-巯基苯胺(4-ATP)用作 SERS 信号。基于浓度范围 10-10mol/L 的 PLS 回归模型显示出线性趋势,R = 0.9907。我们的新方法可以快速可靠地测定鱼样和 RAW264.7 细胞裂解物中的组胺。这种组胺提取和 SERS 分析的方案可以开发出用于组胺检测的超灵敏方法。