期刊
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
卷 24, 期 20, 页码 2986-2992出版社
WILEY
DOI: 10.1002/rcm.4731
关键词
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资金
- CICYT [AGL2010-22319-C03, AGL2007-66638-C02, AGL2006-14228-C03-02]
- Spanish Ministry of Science and Innovation (MICINN) [RETICS RD06/0045/0003]
- Instituto de Salud Carlos III, Spain [PI070240]
- CONSOLIDER INGENIO
- MICINN
- [FUN-C-FOOD CSD2007-063]
Tomato (Lycopersicon esculentum Mill.) is the second most important fruit crop worldwide. Tomatoes are a key component in the Mediterranean diet, which is strongly associated with a reduced risk of chronic degenerative diseases. In this work, we use a combination of mass spectrometry (MS) techniques with negative ion detection, liquid chromatography/electrospray ionization linear ion trap quadrupole-Orbitrap-mass spectrometry (LC/ESI-LTQ-Orbitrap-MS) and liquid chromatography/electrospray ionization tandem mass spectrometry (LC/ESI-MS/MS) on a triple quadrupole, for the identification of the constituents of tomato samples. First, we tested for the presence of polyphenolic compounds through generic MS/MS experiments such as neutral loss and precursor ion scans on the triple quadrupole system. Confirmation of the compounds previously identified was accomplished by injection into the high-resolution system (LTQ-Orbitrap) using accurate mass measurements in MS, MS2 and MS3 modes. In this way, 38 compounds were identified in tomato samples with very good mass accuracy (<2 mDa), three of them, as far as we know, not previously reported in tomato samples. Copyright (C) 2010 John Wiley & Sons, Ltd.
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