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AB72110-EN 0816M-W8
Overview:
Wine makers have historically used gas chromatography and mass spectrometry,
(GC-MS) to detect pesticides, they now more commonly use the technique to
supplement quality control checks of wine taste. Without GC-MS, wine makers must
rely on expert evaluation by oenologists to determine wine quality. By identifying
maturation tracers and molecules commonly responsible for taste defects, GC-MS
augments expert opinion with objective and quantitative information. The method
described in this application note allows wine makers to obtain precise measurements
on the organoleptic parameters that determine wine purity on site, rather than having
to send samples for expensive, external analysis.
Method:
Samples were prepared using a SPME (solid-phase microextraction) PDMS/DVB 65μm
StableFlex
™
SPME Fiber. An ISQ mass spectrometer was used to perform sequential
full scan/SIM acquisitions. A Thermo Scientific
™
TRACE
™
GC Ultra
™
with a Thermo
Scientific
™
TraceGOLD
™
TG-5MS 15 m × 0.25 mm × 0.25 μm column was used.
Results were analyzed using Thermo Scientific
™
QuanLab
™
Forms software. QuanLab
Forms is also Directorate-General for Health and Consumer Protection (SANCO)
compliant and can be used in the European Union.
Part Number
Description
26098-1300
TraceGOLD TG-5MS 15m x 0.25mm x 0.25µm
Conclusion:
The ability of the ISQ GC-MS to detect several contaminants in wine at lower
concentrations than the limit of human tasters, and its ease of use in combination with
a single-step, two-minute sample preparation, make it a useful tool for the wine
industry. This general method may be customized to particular wines by incorporating
new parameters such as trying other SPME coatings in the extraction phase.
Read the full application noteIdentification and Quantification of Impurities
in Wines by GC-MS
Benedicte Gauriat-Desroy, Eric Phillips, Stacy Crain, Trisa Robarge
Thermo Fisher Scientific, Austin, TX, USA
(With special thanks to members of Oenologic Center of Grezillac)
Application Summary AN 52242