Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/329911
Type: Artigo
Title: Rapid Fingerprinting Of Sterols And Related Compounds In Vegetable And Animal Oils And Phytosterol Enriched- Margarines By Transmission Mode Direct Analysis In Real Time Mass Spectrometry
Author: Alberici
Rosana M.; Fernandes
Gabriel D.; Porcari
Andreia M.; Eberlin
Marcos N.; Barrera-Arellano
Daniel; Fernandez
Facundo M.
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). (C) 2016 Elsevier Ltd. All rights reserved.
Subject: Vegetable And Animal Oils
Margarines
Phytosterols
Direct Analysis In Real Time
Ambient Mass Spectrometry
Editor: Elsevier Sci LTD
Oxford
Rights: fechado
Identifier DOI: 10.1016/j.foodchem.2016.05.057
Address: http://www.sciencedirect.com/science/article/pii/S0308814616307373?via%3Dihub
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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