Pyrazine, 2-ethyl-3,5-dimethyl-


Van Den Dool and Kratz RI, non-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 SPB-5SE-54ZB-5DB-5CP Sil 8 CB
Column length (m) 30.25.30.30.60.
Carrier gas  HeHeHe 
Substrate      
Column diameter (mm) 0.530.320.250.250.25
Phase thickness (μm) 1.50.250.250.250.25
Program 40C(1min) => 6C/min => 180C => 20C/min => 280C40C(1min) => 40C/min => 60C(1min) => 4C/min => 140C => 20C/min => 240C(5min)50C(1min) => 3C/min => 209C => 20C/min => 280C40C(1min) => 6C/min => 180C => 20C/min => 280C0C => rapidly => 40C(8min) => 4C/min => 250C(10min)
I 1081.1084.1059.1081.1088.
ReferenceMajcher and Jelen, 2007Frauendorfer and Schieberle, 2006Lu, Hao, et al., 2005Majcher and Jelén, 2005Duckham, Dodson, et al., 2001
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryCapillaryCapillary
Active phase DB-5DB-5SE-54BPX-5SE-54
Column length (m) 30.50.30.50.25.
Carrier gas HeHeHeHeHe
Substrate      
Column diameter (mm) 0.320.320.320.320.32
Phase thickness (μm) 0.250.50.250.50.5
Program 35C(2min) => 40C/min => 60C (2min) => 4C/min => 240CoC(5min) => 60C/min => 60C (5min) => 4C/min => 250C35C (2min) => 40C/min => 60C (2min) => 6C/min => 180C (5min) => 10C/min => 230C (5min)OC (5min) => 60C/min => 60C(5min) => 4C/min => 250C35C (2min) => 4C/min => 150C => 10C/min => 240C
I 1082.1098.1083.1087.1085.
ReferenceRychlik and Bosset, 2001Parker, Hassell, et al., 2000Tairu, Hofmann, et al., 2000Bredie, Mottram, et al., 1998Fickert and Schieberle, 1998
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryCapillary
Active phase SE-54SE-54BPX-5DB-1
Column length (m) 30.30.50.60.
Carrier gas  HeHeHe
Substrate     
Column diameter (mm) 0.320.320.320.32
Phase thickness (μm) 0.250.250.50.25
Program 35C(2min) => 40C/min => 50C(5min) => 6C/min => 230C(15min)40C (2min) => 40C/min => 50C (2min) => 240C (10min)OC => 60C/min => 60C(5min) => 4C/min => 250C(20min)-40C => 40C/min => 40C => 2C/min => 260C
I 1083.1079.1088.1068.
ReferenceHofmann and Schieberle, 1998Münch, Hofmann, et al., 1997Owens J.D., Allagheny N., et al., 1997Kuo, Zhang, et al., 1989
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI

References

Go To: Top, Van Den Dool and Kratz RI, non-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.

Majcher and Jelen, 2007
Majcher, M.A.; Jelen, H.H., Effect of Cysteine and Cystine Addition on Sensory Profile and Potent Odorants of Extruded Potato Snacks, J. Agric. Food Chem., 2007, 55, 14, 5754-5760, https://doi.org/10.1021/jf0703147 . [all data]

Frauendorfer and Schieberle, 2006
Frauendorfer, F.; Schieberle, P., Identification of the key aroma compounds in Cocoa powder based on molecular sensoly correlations, J. Agr. Food Chem., 2006, 54, 15, 5521-5529, https://doi.org/10.1021/jf060728k . [all data]

Lu, Hao, et al., 2005
Lu, C.-Y.; Hao, Z.; Payne, R.; Ho, C.-T., Effects of water content on volatile generation and peptide degradation in the Maillard reaction of glycine, diglycine, and triglycine, J. Agric. Food Chem., 2005, 53, 16, 6443-6447, https://doi.org/10.1021/jf050534p . [all data]

Majcher and Jelén, 2005
Majcher, M.A.; Jelén, H.H., Identification of potent odorants formed during the preparation of extruded potato snacks, J. Agric. Food Chem., 2005, 53, 16, 6432-6437, https://doi.org/10.1021/jf050412x . [all data]

Duckham, Dodson, et al., 2001
Duckham, S.C.; Dodson, A.T.; Bakker, J.; Ames, J.M., Volatile flavour components of baked potato flesh. A comparison of eleven potato cultivars, Nahrung/Food, 2001, 45, 5, 317-323, https://doi.org/10.1002/1521-3803(20011001)45:5<317::AID-FOOD317>3.0.CO;2-4 . [all data]

Rychlik and Bosset, 2001
Rychlik, M.; Bosset, J.O., Flavour and off-flavour compoundsof SwissGruy ere cheese. Evaluation of potent odorants, Int. Dairy J., 2001, 11, 11-12, 895-901, https://doi.org/10.1016/S0958-6946(01)00108-X . [all data]

Parker, Hassell, et al., 2000
Parker, J.K.; Hassell, G.M.E.; Mottram, D.S.; Guy, R.C.E., Sensory and instrumental analyses of volatiles generated during the extrusion cooking of oat flours, J. Agric. Food Chem., 2000, 48, 8, 3497-3506, https://doi.org/10.1021/jf991302r . [all data]

Tairu, Hofmann, et al., 2000
Tairu, A.O.; Hofmann, T.; Schieberle, P., Studies on the key odorants formed by roasting of wild mango seeds (Irvingia gabonensis), J. Agric. Food Chem., 2000, 48, 6, 2391-2394, https://doi.org/10.1021/jf990765u . [all data]

Bredie, Mottram, et al., 1998
Bredie, W.L.P.; Mottram, D.S.; Guy, R.C.E., Aroma volatiles generated during extrusion cooking of maize flour, J. Agric. Food Chem., 1998, 46, 4, 1479-1487, https://doi.org/10.1021/jf9708857 . [all data]

Fickert and Schieberle, 1998
Fickert, B.; Schieberle, P., Identification of the key odorants in barley malt (caramalt) using GC/MS techniques and odour dilution analyses, Nahrung, 1998, 42, 6, 371-375, https://doi.org/10.1002/(SICI)1521-3803(199812)42:06<371::AID-FOOD371>3.0.CO;2-V . [all data]

Hofmann and Schieberle, 1998
Hofmann, T.; Schieberle, P., Identification of key aroma compounds generated from cysteine and carbohydrates under roasting conditions, Z. Lebensm. Unters. Forsch. A, 1998, 207, 3, 229-236, https://doi.org/10.1007/s002170050324 . [all data]

Münch, Hofmann, et al., 1997
Münch, P.; Hofmann, T.; Schieberle, P., Comparison of key odorants generated by thermal treatment of commercial and self-prepared yeast extracts: influence of the amino acid composition on odorant formation, J. Agric. Food Chem., 1997, 45, 4, 1338-1344, https://doi.org/10.1021/jf960658p . [all data]

Owens J.D., Allagheny N., et al., 1997
Owens J.D.; Allagheny N.; Kipping G.; Ames J.M., Formation of volatile compounds during Bacillus subtilis fermentation of soya beans, J. Sci. Food Agric., 1997, 74, 1, 132-140, https://doi.org/10.1002/(SICI)1097-0010(199705)74:1<132::AID-JSFA779>3.0.CO;2-8 . [all data]

Kuo, Zhang, et al., 1989
Kuo, M.-C.; Zhang, Y.; Hartman, T.G.; Rosen, R.T.; Ho, C.-T., Selective purge-and-trap method for the analysis of volatile pyrazines, J. Agric. Food Chem., 1989, 37, 4, 1020-1022, https://doi.org/10.1021/jf00088a045 . [all data]


Notes

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