Characterization of the aroma profile of novel Brazilian wines by solid-phase microextraction using polymeric ionic liquid sorbent coatings

Author(s)

Crucello, Juliana ^[1] ; Miron, Luiz F. O. ^[1] ; Ferreira, Victor H. C. ^{[2, 1]} ; Nan, He ^[3] ; Marques, Marcia O. M. ^[4] ; Ritschel, Patricia S. ^[5] ; Zanus, Mauro C. ^[5] ; Anderson, Jared L. ^[3] ; Poppi, Ronei J. ^{[2, 1]} ; Hantao, Leandro W. ^[1]

Affiliation

^[1] Univ Estadual Campinas, Inst Chem, 270 Monteiro Lobato, BR-13083970 Campinas, SP - Brazil

^[2] Natl Inst Sci & Technol Bioanalyt INCTBio, BR-13083970 Campinas, SP - Brazil

^[3] Iowa State Univ, Dept Chem, Ames, IA 50011 - USA

^[4] Agron Inst Campinas, BR-13012970 Campinas, SP - Brazil

^[5] Brazilian Agr Res Corp, Natl Grape & Wine Res Ctr, BR-95701008 Bento Goncalves, RS - Brazil

• Document type: Journal article
• Source: ANALYTICAL AND BIOANALYTICAL CHEMISTRY; v. 410, n. 19, p. 4749-4762, JUL 2018.
• Web of Science Citations: 7

Abstract

In this study, a series of polymeric ionic liquid (PIL) sorbent coatings is evaluated for the extraction of polar volatile organic compounds (VOCs) from Brazilian wines using headspace solid-phase microextraction (HS-SPME), including samples from `Isabella' and `BRS Magna' cultivars-the latter was recently introduced by the Brazilian Agricultural Research Corporation - National Grape \& Wine Research Center. The structurally tuned SPME coatings were compared to the commercial SPME phases, namely poly(acrylate) (PA) and divinylbenzene/carboxen/poly(dimethylsiloxane) (DVB/CAR/PDMS). The separation, detection and identification of the aroma profiles were obtained using comprehensive two-dimensional gas chromatography mass spectrometry (GCxGC-MS). The best performing PIL-based SPME fiber, namely 1-hexadecyl-3-vinylimidazolium bis{[}(trifluoromethyl)sulfonyl]imide with 1,12-di(3-vinylimidazolium)dodecane dibis{[}(trifluoromethyl)sulfonyl]imide incorporated cross-linker supported on an elastic nitinol wire, exhibited superior performance to DVB/CAR/PDMS regarding the average number of extracted peaks and extracted more polar analytes providing additional insight into the aroma profile of `BRS Magna' wines. Four batches of wine were evaluated, namely `Isabella' and `BRS Magna' vintages 2015 and 2016, using highly selective PIL-based SPME coatings and enabled the detection of 350+ peaks. Furthermore, this is the first report evaluating the aroma of `BRS Magna' wines. A hybrid approach that combined pixel-based Fisher ratio and peak table-based data comparison was used for data handling. This proof-of-concept experiment provided reliable and statistically valid distinction of wines that may guide regulation agencies to create high sample throughput protocols to screen wines exported by Brazilian vintners. (AU)

• FAPESP's process: 15/05059-9 - Development and evaluation of Consumable-free planar microfluidic modulators for comprehensive two-dimensional gas chromatography
• Grantee: Leandro Wang Hantao
• Support Opportunities: Regular Research Grants