Characterization of the Volatile Profile of Brazilian Moscatel Sparkling Wines Through Solid Phase Microextraction and Gas Chromatography

Journal of the Brazilian Chemical Society

Costa, Gustavo¹  Closs, Mayara¹  Universidade Federal do Rio Grande do Sul, Porto Alegre, BR¹  Manfroi, Vitor¹  Zini, Claudia A.¹  Welke, Juliane E.¹  Nicolli, Karine P.¹  Caramão, Elina B.¹ 

关键词:  Moscatel sparkling wine;    volatiles;    comprehensive two-dimensional gas chromatography;    GC×GC/TOFMS;    aroma;   

DOI  :  10.5935/0103-5053.20150110

学科分类：化学（综合）

来源: SciELO

【 摘 要 】

Solid phase microextraction, one-dimensional gas chromatography (1D-GC) and comprehensive two-dimensional gas chromatography (GC×GC) with mass spectrometric detector have been used to characterize the volatile profile of Moscatel sparkling wines. Predominant classes were esters, acids, alcohols and terpenes. The efficiency of GC×GC was apparent due to the higher number of compounds positively and/or tentatively identified through this technique (two and a half times higher than with 1D-GC), as well as by the separation of co-eluted compounds in 1D-GC. Principal components analysis showed that the volatile profile of the majority of sparkling wines is similar. Only two samples differed from others and the compounds responsible for this behavior were nerol, menthol, linalool acetate, limonene and geraniol. Furthermore, a clear separation among sparkling wines done with two Moscato grape varieties (Bianco and Giallo) was observed in cluster analysis due to the higher chromatographic area of terpenes and norisoprenoids verified in Giallo samples.

【 授权许可】

Unknown