| Title: | Characterization of the aroma profile of novel Brazilian wines by solid-phase microextraction using polymeric ionic liquid sorbent coatings |
| Author(s): | Crucello J; Miron LFO; Ferreira VHC; Nan H; Marques MOM; Ritschel PS; Zanus MC; Anderson JL; Poppi RJ; Hantao LW; |
| Address: | "Institute of Chemistry, Universidade Estadual de Campinas, 270 Monteiro Lobato, Campinas, SP, 13083-970, Brazil. National Institute of Science and Technology in Bioanalytics (INCTBio), Campinas, SP, 13083-970, Brazil. Department of Chemistry, Iowa State University, Ames, IA, 50011, USA. Agronomic Institute of Campinas, Campinas, SP, 13012-970, Brazil. Brazilian Agricultural Research Corporation - National Grape & Wine Research Center, Bento Goncalves, RS, 95701-008, Brazil. Institute of Chemistry, Universidade Estadual de Campinas, 270 Monteiro Lobato, Campinas, SP, 13083-970, Brazil. leandro.wang@iqm.unicamp.br" |
| DOI: | 10.1007/s00216-018-1134-3 |
| ISSN/ISBN: | 1618-2650 (Electronic) 1618-2642 (Linking) |
| 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. Graphical abstract Highly selective extraction of wine aroma using polymeric ionic liquid" |
| Keywords: | Brazil Discriminant Analysis Gas Chromatography-Mass Spectrometry/*methods Ionic Liquids/*chemistry Odorants/*analysis Polymers/chemistry Solid Phase Microextraction/*methods Wine/*analysis Biomarkers Flavor and aroma Food chemistry Foodomics Sensomics; |
| Notes: | "MedlineCrucello, Juliana Miron, Luiz F O Ferreira, Victor H C Nan, He Marques, Marcia O M Ritschel, Patricia S Zanus, Mauro C Anderson, Jared L Poppi, Ronei J Hantao, Leandro W eng 519.292/Fundo de Apoio ao Ensino, a Pesquisa e Extensao, Universidade Estadual de Campinas/ 400182/2016-5/Conselho Nacional de Desenvolvimento Cientifico e Tecnologico/ 2015/05059-9/Fundacao de Amparo a Pesquisa do Estado de Sao Paulo/ CHE-1709372/National Science Foundation/ Germany 2018/05/29 Anal Bioanal Chem. 2018 Jul; 410(19):4749-4762. doi: 10.1007/s00216-018-1134-3. Epub 2018 May 28" |
