Detection of the mycotoxin citrinin using silver substrates and Raman spectroscopy

Manager 2019.03.07 13:16 Views : 657

Year 2014 
Journal Info. Journal of Hazardous Materials, 265, 89-95 (2014). 
Author Dheeraj K. Singh, Erdene-Ochir Ganbold, Eun-Min Cho, Kwang-Hwi Cho, Doseok Kim, Jaebum Choo, Sehun Kim, Cheol Min Lee, Sung Ik Yang, Sang-Woo Joo* 
etc.  

Abstract

We detected a trace amount of the mycotoxin citrinin using surface-enhanced Raman scattering (SERS) onsilver nanoparticle (Ag NP) surfaces. The SERS substrate on hydrophobic Teflon films was also introducedto observe the citrinin peaks. A broad band at ∼1382 cm−1, which was ascribed to the symmetric car-boxylate stretching mode, was observed in addition to an antisymmetric carboxylate stretching modeat ∼1568 cm−1in the Raman spectra. The spectral feature indicated that citrinin would adsorb on AgNPs via its carboxylate form. Based on density functional theory (DFT) calculations, vibrational modeanalysis was performed to compare the Raman spectra of citrinin. DFT calculations also predicted thata bidentate bridge configuration through O15 and O16 atoms in citrinin would be the most stable onthree Ag atoms. After treating with Ag NPs, observation of citrinin peaks was attempted in fungal cells ofPenicillium citrinum. This work may provide useful insights into the direct observation of the hazardouscitrinin mycotoxin using SERS by understanding its adsorption behaviors on Ag surfaces.

 

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Year Title Journal Info. etc.
2014  Rapid and sensitive phenotypic marker detection on breast cancer cells using surface-enhanced Raman scattering (SERS) imaging file Biosensors & Bioelectronics, 51, 238-243 (2014).   
2014  SERS-based competitive immunoassay of troponin I and CK-MB markers for early diagnosis of acute myocardial infarction file Chemical Communications, 50, 1058-1060 (2014).  Cover page 
2014  Quantitative Analysis of Disease Biomarkers Using Surface-Enhanced Raman Scattering Spectroscopy file In “Optical Spectroscopy and Computational Methods in Biology and Medicine”
Book Chapter 14 (2014). Springer 		 Book Chapter 
2014  Synthesis, Characterization and Directional Binding of Anisotropic Biohybrid Microparticles for Multiplexed Biosensing file Macromolecular Rapid Communications, 35, 56-65 (2014).   
2014  Detection of the mycotoxin citrinin using silver substrates and Raman spectroscopy file Journal of Hazardous Materials, 265, 89-95 (2014).   
2014  Ultrasensitive trace analysis for 2,4,6-trinitrotoluene using nano-dumbbell surface-enhanced Raman scattering hot spots file Analyst, 139, 807-812 (2014).   
2014  FITC functionalized magnetic core–shell Fe3O4/Ag hybrid nanoparticle for selective determination of molecular biothiols file Sensors and Actuators B, 193, 857-863 (2014).   
2014  One-Step Detection of Melamine in Milk by Hollow Gold Chip Based on Surface-enhanced Raman Scattering file Talanta, 122, 80-84 (2014).   
2014  Gold Nanorod-Assembled PEGylated Graphene-Oxide Nanocomposites for Photothermal Cancer Therapy file Photochemistry and Photobiology, 90, 659–666 (2014).   
2014  Interactions between the Antifungal Drug Myclobutanil and Gold and Silver Nanoparticles in Penicillium digitatum Investigated by Surface-Enhanced Raman Scattering file Applied Spectroscopy, 136, 3833-3841 (2014).   
2014  Gold Nanoparticle Silica Nanopeapods file Journal of the American Chemical Society, 136, 3833-3841 (2014).   
2014  Adsorption and desorption of tyrosine kinase inhibitor erlotinib on gold nanoparticles file Journal of Colloid and Interface Science, 425, 96–101 (2014).   
2014  A Flow Cytometry–based Submicron-Sized Bacterial Detection System using a Movable Virtual Wall file Lab on a Chip, 14, 2327–2333 (2014).   
2014  Use of surface-enhanced Raman scattering to quantify EGFR markers uninhibited by cetuximab antibodies file Biosensors and Bioelectronics, 60, 358–365 (2014).   
2014  Real-time analysis of diaquat dibromide monohydrate in water with a SERS-based integrated microdroplet sensor file Nanoscale, 6, 8781–8786 (2014).   
2014  SERS-based immunoassay of anti-cyclic citrullinated peptide for early diagnosis of rheumatoid arthritis file RSC Advances, 4, 32924-32927 (2014).   
2014  Colloidal gold nanoparticle conjugates of gefitinib file Colloids and Surfaces B: Biointerfaces, 123, 61–67 (2014)   
2014  Biosensors Using Surface-Enhanced Raman Scattering file In “Encyclopedia of Microfluidics and Nanofluidics”, pp. 1-6 (2014): Springer.  Book Chapter 
2013  Trace analysis of mercury (II) ions using aptamer-modified Au/Ag core-shell nanoparticles and SERS spectroscopy in microdroplet channel file Lab on a Chip, 13, 260-266 (2013).   
2013  SERS-based immunoassay of tumor marker VEGF using DNA aptamers and silica-encapsulated hollow gold nanospheres file Physical Chemistry Chemical Physics, 15, 5379-5385 (2013).   
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