G000517

GC Analysis of Pyrazines in Peanut Butter on SUPELCOWAX 10 after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber

suitable for GC, application for SPME

Properties

• technique(s): gas chromatography (GC): suitable; solid phase microextraction (SPME): suitable
• test parameters: sample/matrix: 5 g peanut butter in 40 mL vial; SPME fiber: divinylbenzene-Carboxen-polydimethylbenzene StableFlex (57328-U); extraction: headspace, 30 min at 65 °C in heating block; desorption process: 270 °C for 5 min; column: SUPELCOWAX 10, 30 m × 0.25 mm, 0.25 μm (24079); oven: 40 °C (5 min) to 230 °C at 4 °C/min; inj. temp.: 270 °C; injection: splitless/split, closed 0.5 min, 270 °C, with 0.75 mm liner; detector: ion trap mass spectrometer, m/z =30-350 at 0.6 sec/scan. Selected ions used for quantitation.; carrier gas: Helium, 30 cm/sec; liner: 0.75 mm; sample: peanut butter
• suitability: application for SPME
• application(s): agriculture; food and beverages

Description

Analysis Note

In this application, SPME was used for the analysis of volatiles in multifloral honey using a headspace method. Headspace SPME (HS-SPME) using a Carboxen/PDMS/DVB fiber coupled with gas chromatography-mass spectrometry (GC/MS) was used for the characterization of the volatile fraction of honey samples. Using SPME it was possible to obtain and distinguish the chemical fingerprints of different types of honey. The relatively polar SUPELCOWAX 10 GC column provides excellent separation of these polar compounds.

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Analyte

2-Ethyl-3-methylpyrazine
1-Methylpyrrole
2,3-Dimethylpyrazine
2,5-Dimethylpyrazine
2-Ethylpyrazine, ≥98%, FG
2,3-Diethylpyrazine
2-Methylpyrazine
Carbon disulfide
Dimethyl disulfide
2,6-Dimethylpyrazine
See All (10)