Aroma compound analysis of Eruca sativa (Brassicaceae) SPME headspace leaf samples using GC, GC-MS, and olfactometry.
The aroma compounds of rocket salad (Eruca sativa) SPME headspace samples of fresh leaves were analyzed using GC, GC-MS, and olfactometry. More than 50 constituents of the Eruca headspace could be identified to be essential volatiles, responsible for the characteristic intense green; herbal; nutty and almond-like; Brassicaceae-like (direction of cabbage, broccoli, and mustard); and horseradish-like aroma of these salad leaves. As aroma impact compounds, especially isothiocyanates, and derivatives of butane, hexane, octane, and nonane were identified. 4-Methylthiobutyl isothiocyanate (14.2%), cis-3-hexen-1-ol (11.0%), cis-3-hexenyl butanoate (10.8%), 5-methylthiopentyl isothiocyanate (9.3%), cis-3-hexenyl 2-methylbutanoate (5.4%), and 5-methylthiopentanenitrile (5.0%) were found in concentrations higher than 5.0% (calculated as % peak area of GC analysis using a nonpolar column).
Institute of Pharmaceutical Chemistry, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria. leopold.jirovetz@univie.ac.at
Leopold
L
Jirovetz
David
D
Smith
Gerhard
G
Buchbauer
D000473:Alkanes / Q000032:analysis; D019607:Brassicaceae / Q000737:chemistry*; D002073:Butanes / Q000032:analysis; D002849:Chromatography, Gas; D008401:Gas Chromatography-Mass Spectrometry; D006586:Hexanes / Q000032:analysis; D017879:Isothiocyanates / Q000032:analysis; D009795:Octanes / Q000032:analysis; D009812:Odorants; D018515:Plant Leaves / Q000737:chemistry*; D012903:Smell
D000473:Alkanes; D002073:Butanes; D006586:Hexanes; D017879:Isothiocyanates; D009795:Octanes; C046888:butane; C017573:nonane; C026728:octane