Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/198785
Type: Artigo de periódico
Title: Instantaneous Characterization Of Vegetable Oils Via Tag And Ffa Profiles By Easy Ambient Sonic-spray Ionization Mass Spectrometry.
Author: Simas, Rosineide C
Catharino, Rodrigo R
Cunha, Ildenize B S
Cabral, Elaine C
Barrera-Arellano, Daniel
Eberlin, Marcos N
Alberici, Rosana M
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: Fatty Acids
Plant Oils
Spectrometry, Mass, Electrospray Ionization
Triglycerides
Ultrasonics
Rights: aberto
Identifier DOI: 
Address: http://www.ncbi.nlm.nih.gov/pubmed/20349539
Date Issue: 2010
Appears in Collections:Artigos e Materiais de Revistas Científicas - Unicamp

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