Direct accurate analysis of cysteinylated and glutathionylated precursors of 4-mercapto-4-methyl-2-pentanone and 3-mercaptohexan-1-ol in must by ultrahigh performance liquid chromatography coupled to mass spectrometry
- Concejero, B. 1
- Peña-Gallego, A. 1
- Fernandez-Zurbano, P. 2
- Hernández-Orte, P. 1
- Ferreira, V. 1
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1
Universidad de Zaragoza
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2
Instituto de Ciencias de la Vid y del Vino
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ISSN: 0003-2670
Any de publicació: 2014
Volum: 812
Pàgines: 250-257
Tipus: Article
Altres publicacions en: Analytica Chimica Acta
Indicadors
Cites rebudes
JCR (Journal Impact Factor)
- Any 2014
- Factor d'impacte de la revista: 4.513
- Factor d'impacte sense autocites: 4.239
- Article influence score: 1.067
- Quartil major: Q1
- Àrea: CHEMISTRY, ANALYTICAL Quartil: Q1 Posició en l'àrea: 5/74 (Edició: SCIE)
SCImago Journal Rank
- Any 2014
- Impacte SJR de la revista: 1.544
- Quartil major: Q1
- Àrea: Biochemistry Quartil: Q1 Posició en l'àrea: 86/438
- Àrea: Spectroscopy Quartil: Q1 Posició en l'àrea: 7/72
- Àrea: Analytical Chemistry Quartil: Q1 Posició en l'àrea: 11/110
- Àrea: Environmental Chemistry Quartil: Q1 Posició en l'àrea: 17/108
Scopus CiteScore
- Any 2014
- CiteScore de la revista: 7.3
- Àrea: Spectroscopy Percentil: 92
- Àrea: Analytical Chemistry Percentil: 92
- Àrea: Environmental Chemistry Percentil: 89
- Àrea: Medicine (all) Percentil: 87
- Àrea: Biochemistry Percentil: 86
Dimensions
(Dades actualitzats a data de 30-03-2023)- Cites totals: 15
- Cites recents: 3
- Relative Citation Ratio (RCR): 0.73
- Field Citation Ratio (FCR): 1.39
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Resum
A direct method for the quantitative determination in grapes of four known precursors of the varietal aromas of the thiol character of wine has been optimized and validated. A small volume of centrifuged and filtered must is directly injected in the ultrahigh liquid performance chromatography coupled to mass spectrometry system (UHPLC-MS-MS). Must sugars and other early eluting polar compounds are diverted to the waste, not entering the ion source. Cysteinyl (CYS) and glutathionyl (GLU) precursors from 3-mercaptohexanol (3MH) and 4-mercapto-4-methylpentanone (4M4MP) are separated in 5 min rendering narrow peaks (W1/2 < 9 s). No system performance degradation has been noticed in series of more than 200 injections. A standard addition procedure using the consecutive injection of a spiked sample made it possible to satisfactorily correct for matrix effects, with recoveries very close to 100% in all cases. Intermediate reproducibility was satisfactory (RSD between 1 and 10%), except for the glutathione-4-mercapto-4-methyl-2-pentanone (GLUMP) precursor, for which this value is around 20%. The limits of detection in real-must were below 1 μg L-1 for the precursors of the 4M4MP and for cysteine-3-mercaptohexan-1-ol (CYSMH) and glutathione-3-mercaptohexan-1-ol (GLUMH), 2 and 7 μg L-1, respectively, what is enough for the determination of these precursors in musts of any variety. © 2014 Elsevier B.V. All rights reserved.