HomeGC Analysis of Pyrazines in Peanut Butter on SUPELCOWAX® 10 after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber
GC Analysis of Pyrazines in Peanut Butter on SUPELCOWAX® 10 after SPME using 50/30 μm DVB/Carboxen/PDMS Fiber
Conditions | |
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Sample/Matrix | 5 g peanut butter in 40 mL vial |
Desorption Process | 270 °C for 5 min |
Extraction | Headspace, 30 min at 65 °C in heating block |
SPME Fiber | Divinylbenzene-Carboxen-polydimethylbenzene StableFlex™ (57328-U) |
Column | SUPELCOWAX® 10, 30 m x 0.25 mm, 0.25 µm (24079) |
Oven | 40 °C (5 min) to 230 °C at 4 °C/min |
Carrier Gas | Helium, 30 cm/sec |
Sample | Peanut butter |
Injection | Splitless/split, closed 0.5 min, 270 °C, with 0.75 mm liner |
Liner | 0.75 mm |
Inj. Temp. | 270 °C |
Detector | Ion trap mass spectrometer, m/z =30-350 at 0.6 sec/scan. Selected ions used for quantitation. |
Description | |
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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. |
Categories | Analytical Chromatography, SPME Applications, GC Applications, Foods, Flavors & Fragrances, Volatiles |
Featured Industry | Agriculture Food and Beverages |
Legal Information | SUPELCOWAX is a registered trademark of Sigma-Aldrich Co. LLC |
Other Notes | Complementary Products: Syringes Vials Gas Purification and Gas Management Inlet Liners, Glass Wool, and Specialized Hand Tools Septa and Specialized Hand Tools Column Ferrules, Nuts, and Specialized Hand Tools |
Suitability | Application for SPME, Application for GC |
Analyte
- 1-Methylpyrrole
- 2,3-Diethylpyrazine
- 2,3-Dimethylpyrazine
- 2,5-Dimethylpyrazine
- 2,6-Diethyl pyrazine
- 2,6-Dimethylpyrazine
- 2-Allyl-5-methylpyrazine
- 2-Ethenyl-5-methylpyrazine
- 2-Ethenyl-6-methylpyrazine
- 2-Ethyl pyrazine
- 2-Ethyl-3,5-dimethyl pyrazine
- 2-Ethyl-3-methyl pyrazine
- 2-Ethyl-5-methyl pyrazine
- 2-Ethyl-6-methyl pyrazine
- 2-Methyl-5-isopropylpyrazine
- 2-Methyl-5-propylpyrazine
- 2-Methyl-6-cis propenylpyrazine
- 2-Methylpyrazine
- 3,5-Diethyl-2-methyl pyrazine
- 3-Ethyl-2,5-dimethylpyrazine
- 3-Methylbutanal
- 4-Methylpentene-2-one
- 5-Methyl-2-propylpyrazine
- Carbon disulfide
- Dimethyl disulfide
- Heptanal
- Hexanal
- Pentanal
- Trimethyl pyrazine
Materials
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