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Pyrazine, 2,3-diethyl-5-methyl-


Normal alkane RI, polar column, custom temperature program

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Column type CapillaryCapillaryCapillaryCapillaryCapillary
Active phase FFAPHP-InnowaxHP-InnowaxInnowaxDB-FFAP
Column length (m)  60.60.30.30.
Carrier gas HeliumHeliumHeliumHeliumHe
Substrate      
Column diameter (mm)  0.320.320.250.32
Phase thickness (mum)  0.250.250.500.25
Program not specified40 0C (5 min) 4 0C/min -> 60 0C (5 min) 8 0C/min -> 250 0C (3 min)not specified40 0C (2 min) 10 0C/min -> 100 0C 3 0C/min -> 160 0C 5 0C/min -> 260 0C (10 min)35 0C (2 min) 40 K/min -> 60 0C (1 min) 6 K/min -> 240 0C
I 1454.1501.1494.1505.1485.
ReferenceFrauendorfer and Schieberle, 2008Viegas and Bassoli, 2007Viegas and Bassoli, 2007Ito and Mori, 2004Mayer and Grosch, 2001
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryCapillaryCapillary
Active phase FFAPFFAPFFAPFFAPFFAP
Column length (m) 30.25.30.30. 
Carrier gas HeHeHeHe 
Substrate      
Column diameter (mm) 0.320.320.320.32 
Phase thickness (mum) 0.250.250.250.25 
Program 35C(1min) => 40C/min => 60C (1min) => 6C/min => 230C35C(2min) => 40C/min => 60C(2min) => 6C/min => 230C35C (2min) => 40C/min => 60C (2min) => 6C/min => 180C => 10C/min => 240C35C (2min) => 40C/min => 60C (2min) => 6C/min => 180C => 10C/min => 240Cnot specified
I 1465.1469.1490.1490.1478.
ReferenceMatsui, Guth, et al., 1998Zehentbauer and Grosch, 1998Schermann and Schieberle, 1997Schermann and Schieberle, 1997Guth and Grosch, 1994
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryCapillary
Active phase Supelcowax-10FFAPFFAPCarbowax 20M
Column length (m) 30.   
Carrier gas He   
Substrate     
Column diameter (mm) 0.32   
Phase thickness (mum)     
Program 35C => 40C/min => 60C(2min) => 4C/min => 240Cnot specifiednot specifiednot specified
I 1538.1478.1485.1459.
ReferenceSchieberle and Grosch, 1994Guth and Grosch, 1993Blank, Sen, et al., 1992Mihara and Masuda, 1987
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI

References

Go To: Top, Normal alkane RI, polar column, custom temperature program, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Frauendorfer and Schieberle, 2008
Frauendorfer, F.; Schieberle, P., Changes in key aroma compounds of criollo cocoa beans during roasting, J. Agric. Food Chem., 2008, 56, 21, 10244-10251, https://doi.org/10.1021/jf802098f . [all data]

Viegas and Bassoli, 2007
Viegas, M.C.; Bassoli, D.G., Utilizacao do indice de retencao linear para caracterizacao de compostos volateis em cafe soluvel utilizando GC-MS e coluna HP-Innowax, Quim. Nova, 2007, 30, 8, 2031-2034, https://doi.org/10.1590/S0100-40422007000800040 . [all data]

Ito and Mori, 2004
Ito, K.; Mori, M., Formation of pyrazines in aqueous maltose/glucose/fructose-glutamide model systems upon heating at below 100 0C, Food Sci. Technol. Res., 2004, 10, 2, 199-204, https://doi.org/10.3136/fstr.10.199 . [all data]

Mayer and Grosch, 2001
Mayer, F.; Grosch, W., Aroma simulation on the basis of the odourant composition of roasted coffee headspace, Flavour Fragr. J., 2001, 16, 3, 180-190, https://doi.org/10.1002/ffj.975 . [all data]

Matsui, Guth, et al., 1998
Matsui, T.; Guth, H.; Grosch, W., A comparative study of potent odorants in peanut, hazelnut, and pumpkin seed oils on the basis of aroma extract dilution analysis (AEDA) and gas chromatography-olfactometry of headspace samples (GCOH), Lipid - Fett, 1998, 100, 2, 51-56, https://doi.org/10.1002/(SICI)1521-4133(199802)100:2<51::AID-LIPI51>3.0.CO;2-W . [all data]

Zehentbauer and Grosch, 1998
Zehentbauer, G.; Grosch, W., Crust aroma of baguettes. I. Key odorants of baguettes prepared in two different ways, J. Cereal Science, 1998, 28, 1, 81-92, https://doi.org/10.1006/jcrs.1998.0184 . [all data]

Schermann and Schieberle, 1997
Schermann, P.; Schieberle, P., Evaluation of key odorants in milk chocolate and cocoa mass by aroma extract dilution analyses, J. Agric. Food Chem., 1997, 45, 3, 867-872, https://doi.org/10.1021/jf960670h . [all data]

Guth and Grosch, 1994
Guth, H.; Grosch, W., Identification of the character impact odorants of stewed beef juice by instrumental analyses and sensory studies, J. Agric. Food Chem., 1994, 42, 12, 2862-2866, https://doi.org/10.1021/jf00048a039 . [all data]

Schieberle and Grosch, 1994
Schieberle, P.; Grosch, W., Potent odorants of rye bread crust - differences from the crumb and from wheat bread crust, Z. Lebensm. Unters. Forsch., 1994, 198, 4, 292-296, https://doi.org/10.1007/BF01193177 . [all data]

Guth and Grosch, 1993
Guth, H.; Grosch, W., 12-Methyltridecanal, a species-specific odorant of stewed beef, Lebensm. Wiss. Technol., 1993, 26, 2, 171-177, https://doi.org/10.1006/fstl.1993.1035 . [all data]

Blank, Sen, et al., 1992
Blank, I.; Sen, A.; Grosch, W., Potent odorants of the roasted powder and brew of Arabica coffee, Z. Lebensm. Unters Forsch., 1992, 195, 3, 239-245, https://doi.org/10.1007/BF01202802 . [all data]

Mihara and Masuda, 1987
Mihara, S.; Masuda, H., Correlation between molecular structures and retention indices of pyrazines, J. Chromatogr., 1987, 402, 309-317, https://doi.org/10.1016/0021-9673(87)80029-8 . [all data]


Notes

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