GC Analysis for Aroma Fusel Alcohols in Rum on Watercol™ 1910 after Headspace SPME using 75 μm Carboxen®/PDMS Fiber, MSD


sample preparation Solid Phase Microextraction
sample/matrix 0.5 mL rum in a 2 mL vial
SPME fiber 75 μm
Carboxen®/polydimethylsiloxane on a fused silica core (57318)
extraction headspace, 60 °C for 45 min
desorption process 300 °C for 1.1 min
column Watercol 1910, 30 m x 0.25 mm I.D., 0.20 μm (29711-U)
oven 40 °C (2 min), 4 °C/min to 125 °C (1 min)
inj. temp. 300 °C
detector MSD, m/z= 18-500
MSD interface 260 °C
carrier gas helium, 1.1 mL/min
injection splitless
liner 0.75 mm I.D., direct (SPME) type, straight design (2633901)


Featured Industry Food and Beverages
Legal Information Carboxen is a registered trademark of Sigma-Aldrich Co. LLC
Watercol is a trademark of Sigma-Aldrich Co. LLC
suitability application for GC
application for SPME
Analysis Note Fusel alcohols are by-products of the fermentation process. Four of these (n-propanol, isobutanol, active amyl alcohol, and isoamyl alcohol) are important to alcoholic beverage manufacturers due to their aroma characteristics. 

The "Watercol" series of ionic liquid capillary GC columns are haracterized by their ability to product a sharp peak shape for water, sharp enough so that water can be integrated and quantified. Sharp peak shapes are also produced for many other small polar analytes, such as the four aroma fusel alcohols. 

In this application, a gin sample was analyzed for the presence of aroma fusel alcohols. As shown, none were detected.


Related Links