G003784

Omegawa xge Fraktion gerösteter Kaffebohnen

application for SPME, suitable for GC

Eigenschaften

• Methode(n): gas chromatography (GC): suitable; solid phase microextraction (SPME): suitable
• Testparameter: sample/matrix: 2 g of coffee beans; SPME fiber: 50/30 μm divinylbenzene/Carboxen on polydimethylsiloxane on a StableFlex fiber (57329-U); extraction: headspace, with a pre-equilibration period of 10 min. at 60 °C, and then a fiber exposure of 40 min. at 60 °C, agitated in an alternate clockwise-anticlockwise rotation mode at 500 rpm; desorption process: 260 °C for 5 min; column: Omegawax 250, 30 m x 0.25 mm I.D., 0.25 μm (24136); oven: 40 °C (5 min), 4 °C/min to 230 °C, 50 °C/min to 280 °C (2 min); inj. temp.: 260 °C; detector: MS, m/z 40-400; carrier gas: helium, 34.8 cm/sec constant; injection: splitless; scan range: m/z 40-400; sample: Roasted coffee; liner: 0.75 mm I.D. SPME/Splitless (2633901)
• Eignung: application for SPME
• Anwendung(en): food and beverages

Beschreibung

Hinweis zur Analyse

Headspace-SPME followed by GC analysis was used in this application to analyze volatile compounds in roasted coffee. SPME is ideal for analyzing the headspace of solid samples like coffee beans. The Carboxen/DVB/PDMS fiber is the fiber of choice for analyzing the wide range of analytes commonly found in roast coffee beans.The relatively polar Omegawax 250 GC column provided high resolution.

Rechtliche Hinweise

Analyt

Methyl acetate
2-Methylfuran
Ethyl acetate
2-Butanone
2,3-Dihydro-5-methylfuran
Ethyl alcohol
2,5-Dimethylfuran
2,3-Butanedione
3-Hexanone
2,3-Pentanedione
Hexanal
3-Penten-2-one
2,3-Hexanedione
1-Methylpyrrole
3,4-Hexanedione
α-Terpinene
Pyridine
(R)-(+)-Limonene, purum, ≥98.0% (sum of enantiomers, GC)
Pyrazine
γ-Terpinene
2-Methylpyrazine
p-Cymene
2,5-Dimethylpyrrole
Acetoin, primarily dimer, ≥95%, FG
2,5-Dimethylpyrazine
2,6-Dimethylpyrazine
2-Ethylpyrazine, ≥98%, FG
2,3-Dimethylpyrazine
4-Heptanone
3-Ethylpyridine
2,3,5-Trimethylpyrazine
Furfural
Pyrrole
Furfuryl acetate
Linalool
Linalyl acetate
5-Methylfurfural
γ-Butyrolactone
2-Acetyl-1-methylpyrrole
Furfuryl alcohol
2-Acetylpyrrole
Pyrrole-2-carboxaldehyde
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