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Sample Preparation	30 min equilibration at 40 °C prior to extraction
Sample Preparation	Fiber postbake after extraction, 3 min at 270 °C
Sample/Matrix	Ground Cascade variety hop pellets
Desorption Process	3 min, 270 °C
Extraction	20 min, headspace, 40 °C
SPME Fiber	Divinylbenzene/Carboxen/Polydimethylsiloxane (DVB/CAR/PDMS), 50/30 μM (57298-U)
Column	Equity-1, 60 m x 0.25 mm I.D., 0.25 µM (28047-U)
Oven	60 °C (2 min), 5 °C/min to 275 °C (5 min)
Carrier Gas	helium, 1 mL/min constant flow
Liner	0.75 mm ID, SPME
Inj. Temp.	270 °C
Detector	MSD
MSD Interface	300 °C
Scan Range	Full scan, m/z 50-500

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Analysis Note	Terpenes are contained in the essential oils derived from plants, and often impart characteristic aromas to the plant and/or oil. In this application, headspace-SPME combined with GC/MS was used to analyze some of the terpenes present in the Cascade variety of hops. Chromatographic separation was performed on an Equity^®-1 capillary GC column, and identification was done using retention indices and spectral library match. Analysis showed a characteristic terpene profile, with high levels of ÃŸ-myrcene, caryophyllene, and humulene present.
Categories	Analytical Chromatography, GC Applications, Terpenes, Hydrocarbons
Featured Industry	Food and Beverages
Legal Information	Equity is a registered trademark of Sigma-Aldrich Co. LLC
Other Notes	Add 0.5 gm ground hops to a 10 mL headspace vial
Suitability	Application for SPME, application for GC

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GC Analysis of Terpenes in Hops (Cascade Variety) on Equity®-1 after Headspace SPME using 50/30 µM DVB/CAR/PDMS Fiber

Materials

GC Analysis of Terpenes in Hops (Cascade Variety) on Equity^®-1 after Headspace SPME using 50/30 µM DVB/CAR/PDMS Fiber