Determination of Volatile Compounds in Wine by Automated Solid-Phase Microextraction and Gas Chromatography.
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Universidad de La Rioja
info
ISSN: 0009-5893
Argitalpen urtea: 2004
Alea: 59
Zenbakia: 11/12/2010
Orrialdeak: 733-738
Mota: Artikulua
Beste argitalpen batzuk: Chromatographia
Laburpena
Solid-phase microextracfion in headspace mode has been applied to the determination of volatile compounds (3-methyl-1-butyl acetate, 3-mefhyl-1-bufanol, ethyl hexanoate, pentanol, hexanol, linalool, diethyl succinate, α-terpineol, 2-phenylethyl acetate, geraniol, 2-phenylethanol and octanoic acid) in wine samples from the Denominación de Origen Calificada Rioja using gas chromatography and a flame ionization detector. After the preliminary tests, several parameters were optimized using a Plackett-Burman design to get the most relevant variables. These parameters were: extraction time, desorption time, split ratio, magnetic stirring, type of fibre, type of injection (headspace or direct sampling) and type of salt. Five wine samples were analysed under optimum conditions. Concentrations ranging from 0.0104 mg L-1 for pentanol and 48.9 mg L-1 for 3-methyl-1-butanol were obtained. Linalool, α-terpineol and geraniol were not detected. Limit of detection ranging 0.00150-0.00800 mg L-1 and relative standard deviation ranging 1.1-5.7% were obtained.