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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Direct metabolic fingerprinting of olive oils using STELDI-MS

Texto completo
Autor(es):
de Oliveira, D. N. [1] ; Catharino, R. R. [1]
Número total de Autores: 2
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Pharmaceut Sci, Innovare Biomarkers Lab, BR-13083877 Campinas, SP - Brazil
Número total de Afiliações: 1
Tipo de documento: Artigo Científico
Fonte: Journal of Food Composition and Analysis; v. 38, p. 131-134, MAR 2015.
Citações Web of Science: 6
Resumo

A new and rapid approach for analysis of olive oil has been developed using sorptive tape-like extraction in combination with laser desorption ionization mass spectrometry (STELDI-MS). This powerful combination has some great advantages, as no-separation steps, solvent-free, matrix-free, and no sample preparation. The olive oil compounds are analyzed by LDI-MS, directly from the sample spot in a thin-layer chromatography (TLC) plate. Chosen samples represent products commonly used as adulterants in extra virgin olive oil (EVOO) and the main monitored ions were lipid adulteration markers. Analytical procedures consisted of profiling the main fatty acids (m/z 255 - palmitic acid, 279 - linoleic acid, 281 - oleic acid and 283 - stearic acid), triacylglycerols (m/z 901 - LLL and 907 - 000) and some phenolic compounds (m/z 169-. gallic acid, 193- ferulic acid and 195- 2(4-hydroxyphenyl) ethyl acetate) in extra virgin olive oil (EVOO), olive oil (OO), hazelnut oil (HO) and soybean oil (SO). Compound identification was confirmed by analysis of collision-induced dissociation (CID) products in positive (ion {[}M+Na](+)) and negative mode (ion {[}M-H](-)). This method is simple, fast and efficient in identifying compounds that can be used to recognize different levels of adulteration, oxidation and hydrolysis of vegetables oils. (C) 2014 Elsevier Inc. All rights reserved. (AU)

Processo FAPESP: 14/00084-2 - Identificação de adulterações e determinação simultânea de nutrientes e contaminantes em alimentos por análise direta em espectrometria de massas e imagem
Beneficiário:Diogo Noin de Oliveira
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 11/50400-0 - Metabolismo energético, estado redox e funcionalidade mitocondrial na morte celular e em desordens cardiometabólicas e neurodegenerativas
Beneficiário:Aníbal Eugênio Vercesi
Linha de fomento: Auxílio à Pesquisa - Temático