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Type: Artigo
Title: Instantaneous characterization of vegetable oils via TAG and FFA profiles by easy ambient sonic-spray ionization mass spectrometry
Author: Rosineide C. Simas, a
Rodrigo R. Catharino, b
Ildenize B. S. Cunha, a
Elaine C. Cabral, c
Daniel BarreraArellano, d
Marcos N. Eberlina and
Rosana M. Alberici
Abstract: A fast and reliable method is presented for the analysis of vegetable oils. Easy ambient sonic-spray ionization mass spectrometry (EASI-MS) is shown to efficiently desorb and ionize the main oil constituents from an inert surface under ambient conditions and to provide comprehensive triacylglyceride (TAG) and free fatty acid (FFA) profiles detected mainly as either [TAG + Na]+ or [FFA − H]− ions. EASI(±)-MS analysis is simple, easily implemented, requires just a tiny droplet of the oil and is performed without any pre-separation or chemical manipulation. It also causes no fragmentation of TAG ions hence diacylglyceride (DAG) and monoacylglyceride (MAG) profiles and contents can also be measured. The EASI(±)-MS profiles of TAG and FFA permit authentication and quality control and can be used, for instance, to access levels of adulteration, acidity, oxidation or hydrolysis of vegetable oils in general
Subject: Espectrometria de massa
Country: Reino Unido
Editor: Royal Society of Chemistry
Rights: Fechado
Identifier DOI: 10.1039/B923272A
Date Issue: 2010
Appears in Collections:IQ - Artigos e Outros Documentos
FCM - Artigos e Outros Documentos
FEA - Artigos e Outros Documentos

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