Gold Nanoparticle-Decorated Silver Needle for Surface-Enhanced Raman Spectroscopy Screening of Residual Malachite Green in Aquaculture Products

2019 ◽  
Vol 2 (5) ◽  
pp. 2752-2757 ◽  
Author(s):  
Binbin Zhou ◽  
Junda Shen ◽  
Pan Li ◽  
Meihong Ge ◽  
Dongyue Lin ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Gold Nanoparticle ◽  
Malachite Green ◽  
Surface Enhanced Raman Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Aquaculture Products

scholarly journals Detection of Triphenylmethane Drugs in Fish Muscle by Surface-Enhanced Raman Spectroscopy Coupled with Au-Ag Core-Shell Nanoparticles

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Lu Pei ◽  
Yiqun Huang ◽  
Chunying Li ◽  
Yuanyuan Zhang ◽  
Barbara A. Rasco ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Malachite Green ◽  
Crystal Violet ◽  
Bimetallic Nanoparticles ◽  
Limit Of Detection ◽  
Fish Muscle ◽  
Surface Enhanced Raman Spectroscopy ◽  
Vis Spectroscopy ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Silver-coated gold bimetallic nanoparticles were synthesized and used as substrates for surface-enhanced Raman spectroscopy (SERS) in detecting prohibited triphenylmethane drugs (including crystal violet and malachite green) in fish muscle. The optical properties and physical properties of bimetallic nanospheres were characterized by UV-Vis spectroscopy and transmission electron microscopy. The optimal nanospheres selected had relatively uniform size (diameter: 33 ± 3 nm) with a silver layer coated on the surface of gold seed (diameter: 18 ± 2 nm). For both crystal violet and malachite green, characteristic SERS spectral features could be identified at concentration as low as 0.1 μg/L with these bimetallic nanospheres. Crystal violet and malachite green residues in fish muscle could also be detected at levels as low as 0.1 ng/g, which could meet the most restricted regulatory requirements for the limit of detection in terms of analytical methods for crystal violet or malachite green in fish muscle. This study provides a basis for applying SERS technology with bimetallic nanoparticles to the identification of trace amounts of prohibited substances in aquatic food products, and the methodology could be extended to analyses of other hazardous chemicals in complex food matrices like vegetables and meats.

Understanding the competitive interactions in aptamer–gold nanoparticle based colorimetric assays using surface enhanced Raman spectroscopy (SERS)

2016 ◽  
Vol 8 (7) ◽  
pp. 1602-1608 ◽  
Author(s):  
Shintaro Pang ◽  
Lili He
Keyword(s):  
Raman Spectroscopy ◽  
Gold Nanoparticle ◽  
Rapid Detection ◽  
Surface Enhanced Raman Spectroscopy ◽  
Competitive Interactions ◽  
Detection Methods ◽  
Color Changes ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Colorimetric Assays

Aptamer–gold nanoparticle (AuNP) based colorimetric assays have become increasingly popular as viable rapid detection methods, but the molecular interactions governing the mechanism and successful interpretation of color changes have not been explored well.

scholarly journals Membrane Surface-Enhanced Raman Spectroscopy for Cholesterol-Modified Lipid Systems: Effect of Gold Nanoparticle Size

ACS Omega ◽  
2019 ◽  
Vol 4 (9) ◽  
pp. 13687-13695 ◽  
Author(s):  
Miftah Faried ◽  
Keishi Suga ◽  
Yukihiro Okamoto ◽  
Kamyar Shameli ◽  
Mikio Miyake ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Gold Nanoparticle ◽  
Membrane Surface ◽  
Surface Enhanced Raman Spectroscopy ◽  
Nanoparticle Size ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

scholarly journals Structure−Activity Relationships in Gold Nanoparticle Dimers and Trimers for Surface-Enhanced Raman Spectroscopy

2010 ◽  
Vol 132 (31) ◽  
pp. 10903-10910 ◽  
Author(s):  
Kristin L. Wustholz ◽  
Anne-Isabelle Henry ◽  
Jeffrey M. McMahon ◽  
R. Griffith Freeman ◽  
Nicholas Valley ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Gold Nanoparticle ◽  
Surface Enhanced Raman Spectroscopy ◽  
Structure Activity Relationships ◽  
Structure Activity ◽  
Surface Enhanced ◽  
Surface Enhanced Raman
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