INQUISUR   21779
INSTITUTO DE QUIMICA DEL SUR
Unidad Ejecutora - UE
artículos
Título:
Fluorescent fingerprints of edible oils and biodiesel by means total synchronous fluorescence and Tucker3 modeling
Autor/es:
J.M. CAMIÑA; M. INSAUSTI; M.C.UGLINO DE ARAUJO; M. INSAUSTI; M.C.UGLINO DE ARAUJO; A. ARAUJO DE GOMEZ; B. FERNÁNDEZ BAND; A. ARAUJO DE GOMEZ; B. FERNÁNDEZ BAND; J.M. CAMIÑA
Revista:
SPECTROCHIMICA ACTA A: MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
Editorial:
ELSEVIER
Referencias:
Lugar: Amsterdam; Año: 2017 vol. 175 p. 185 - 190
ISSN:
0584-8539
Resumen:
The present work proposes the use of total synchronous fluorescence spectroscopy (TSFS) as a discrimination methodology for fluorescent compounds in edible oils,which are preserved after the transesterification processes in the biodieselproduction. In the same way, a similar study is presented to identifyfluorophores that do not change in expired vegetal oils, to associate physicochemicalparameters to fluorescent measures, as contribution to a fingerprint for increasingthe chemical knowledge of these products. The fluorescent fingerprints were obtainedby Tucker3 decomposition of a three-way array of the total synchronousfluorescence matrices. This chemometric method presents the ability for modelingnon-bilinear data, as Total Synchronous Fluorescence Spectra data, and consistsin the decomposition of the three way data arrays (samples x Äë x ë excitation), into four data matrices A (scores), B (profile in Äë), C (profile in spectra mode) and G (relationships between A, B and C). In this study, 50 samples of oil from soybean, corn and sunflower seeds before and after its expiration time,as well as 50 biodiesel samples obtained by transesterifcation of the same oilswere measured by TSFS. This study represents an immediate application ofchemical fingerprint for the discrimination of non-expired and expired edibleoils and biodiesel. This method does not require the use of reagents orlaborious procedures for the chemical characterization of samples.