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Abstract:
Simple, rapid, convenient, and economical surface enhanced Raman scattering (SERS) substrate is developed for on-site evaluation of Aflatoxin B-1 (AFB(1)) in food matrix using handheld Raman Spectrometer. Self-assembly of gold nanobipyramids (Au NBPs) into the nanoholes of anodic aluminum oxide (AAO) template/pattern using 'drop-dry' approach provides a reliable pathway for the rapid fabrication of highly active and uniform SERS substrate. It shows enhanced and reproducible SERS signals towards the probe molecule, 4-aminothiophenol (4-ATP) with a relative standard deviation (RSD) of less than 10% and an average enhancement factor (EF) of 1 x 10(8). For practical application, the proposed method is demonstrated for the detection of aflatoxin B-1 (AFB(1)) in peanut extracts. The results show that the AFB(1) in peanut extracts can be identified within 1 min, with a limit of detection of 0.5 mu g/L. Compared with conventional ELISA based AFB(1) analysis, our method is much more efficient (1 min versus > 30 min).
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Source :
FOOD CHEMISTRY
ISSN: 0308-8146
Year: 2020
Volume: 307
7 . 5 1 4
JCR@2020
8 . 5 0 0
JCR@2023
ESI Discipline: AGRICULTURAL SCIENCES;
ESI HC Threshold:116
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 54
SCOPUS Cited Count: 56
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: