Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/67348
Title: Qualitative study of ethanol content in tequilas by Raman spectroscopy and principal component analysis
Author: Frausto-Reyes, C.
Medina-Gutierrez, C.
Sato-Berru, R.
Sahagun, L.R.
Issue Date: 2005
Abstract: Using Raman spectroscopy, with an excitation radiation source of 514.5 nm, and principal component analysis (PCA) was elaborated a method to study qualitatively the ethanol content in tequila samples. This method is based in the OH region profile (water) of the Raman spectra. Also, this method, using the fluorescence background of the Raman spectra, can be used to distinguish silver tequila from aged tequilas. The first three PCs of the Raman spectra, that provide the 99% of the total variance of the data set, were used for the samples classification. The PCA1 and PCA2 are related with the water (or ethanol) content of the sample, whereas the PCA3 is related with the fluorescence background of the Raman spectra. © 2004 Elsevier B.V.
URI: http://hdl.handle.net/20.500.12104/67348
Appears in Collections:Producción científica UdeG (prueba)

Files in This Item:
There are no files associated with this item.


Items in RIUdeG are protected by copyright, with all rights reserved, unless otherwise indicated.