ISSN:
1750-3841
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
,
Process Engineering, Biotechnology, Nutrition Technology
Notes:
A method for analyzing volatiles such as alcohols (1-octen-3-ol), aldehydes (trans-trans-2,4-decadienal, trans-2-nonenal), terpenols (linalool, terpineol, and oxides), and isoprenoids (β-damascenone, β-ionone, 1,1,6-trimethyl-1,2-dihydronaphtalen and vitispirane) on white wines using solid phase microextraction has been developed. The analytes were extracted directly from the headspace of a constant volume of wine using 7 different fibers coated with different stationary phases compared with a classic dichloromethane extract. The best extraction efficiency was obtained with a divinylbenzene/Carboxen/polydimethylsiloxane, 50/30 μm. Sample volume, time, and temperature of the extraction were optimized and the matrix effect studied. The limits of quantification varied between 0.013 and 1.81 μg/L. The r-values for linearity studies varied between 0.9761 and 0.9999. Among the compounds measured, some are related to the aroma of young white wine, such as linalol, terpineol, β-damascenone, whereas others, for example, 1-octen-3-ol, trans-trans-2,4-decadienal, trans-2-nonenal, 1,1,6-trimethyl-1,2-dihydronaphtalene, and vitispirane, are related to evolution characteristic of white wines.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2621.2003.tb05811.x
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