Autor(es): Alberici, Rosana Maria ; Fernandes, Gabriel Deschamps, 1988- ; Porcari, Andréia de Melo, 1983- ; Eberlin, Marcos Nogueira, 1959- ; Barrera Arellano, Daniel, 1953-
Data: 2016
Identificador Persistente: https://hdl.handle.net/20.500.12733/1073
Origem: Oasisbr
Assunto(s): Fitosteróis; Phytosterols; Vegetable and animal oils; Margarines; Direct analysis in real time; Ambient mass spectrometry; Artigo original
Abstract: Plant-derived sterols, often referred to as phytosterols, are important constituents of plant membranes where they assist in maintaining phospholipid bilayer stability. Consumption of phytosterols has been suggested to positively affect human health by reducing cholesterol levels in blood via inhibition of its absorption in the small intestine, thus protecting against heart attack and stroke. Sterols are challenging analytes for mass spectrometry, since their low polarity makes them difficult to ionize by both electrospray ionization (ESI) and matrix-assisted laser desorption ionization (MALDI), typically requiring derivatization steps to overcome their low ionization efficiencies. We present a fast and reliable method to characterize the composition of phytosterols in vegetable oils and enriched margarines. The method requires no derivatization steps or sample extraction procedures thanks to the use of transmission mode direct analysis in real time mass spectrometry (TM-DART-MS)
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
COORDENAÇÃO DE APERFEIÇOAMENTO DE PESSOAL DE NÍVEL SUPERIOR - CAPES
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