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Ultrasensitive detection of phenolic antioxidants by surface enhanced Raman spectroscopy

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Kjetil Aune

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kjetil.aune@nofima.no

Proceedings of SPIE, the International Society for Optical Engineering ; Volume 1045319. 2017

Ornelas-Soto, Nancy; Aguilar-Hernández, Iris; Afseth, Nils Kristian; López-Luke, Tzarara; Contreras-Torres, Flavio F.; Wold, Jens-Petter

Surface-Enhanced Raman Spectroscopy (SERS) is a powerful surface-sensitive technique to study the vibrational properties of analytes at very low concentrations. In this study, ferulic acid, p-coumaric acid, caffeic acid and sinapic acid were analyzed by SERS using Ag colloids. Analytes were detected up to 2.5×10-9M. For caffeic acid and coumaric acid, this detection limit has been reached for the first time, as well as the SERS analysis of sinapic acid using silver colloids.

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