Fabrication of Fe3O4/Au@ATP@Ag Nanorod sandwich structure for sensitive SERS quantitative detection of histamine

Anal Chim Acta. 2020 Apr 1:1104:199-206. doi: 10.1016/j.aca.2020.01.017. Epub 2020 Jan 27.

Abstract

We have successfully prepared a highly sensitive sandwich nanosensor combined Fe3O4 and Au@ATP@Ag nanorods for histamine detection based on surface-enhanced Raman spectroscopy (SERS). The Fe3O4 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 10-3-10-8mol/L showed a linear trend with R2 = 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.

Keywords: Core-shell; Fe(3)O(4); Fish; Histamine; RAW264.7 cell lysates; SERS.

MeSH terms

  • Adenosine Triphosphate / chemistry*
  • Animals
  • Ferrosoferric Oxide / chemistry*
  • Fishes
  • Food Analysis / methods*
  • Gold / chemistry*
  • Histamine / analysis*
  • Limit of Detection
  • Mice
  • Muscles / chemistry
  • Nanotubes / chemistry*
  • RAW 264.7 Cells
  • Seafood / analysis
  • Spectrum Analysis, Raman / methods*
  • Surface Properties

Substances

  • Gold
  • Histamine
  • Adenosine Triphosphate
  • Ferrosoferric Oxide