Pyrazine, ethyl-
- Formula: C6H8N2
- Molecular weight: 108.1411
- IUPAC Standard InChIKey: KVFIJIWMDBAGDP-UHFFFAOYSA-N
- CAS Registry Number: 13925-00-3
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Ethylpyrazine; 2-Ethylpyrazine
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Van Den Dool and Kratz RI, non-polar column, temperature ramp
Go To: Top, References, Notes
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 | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | DB-5 | SPB-5 | CP-Sil 8CB-MS | HP-5 | BPX-5 |
Column length (m) | 60. | 60. | 60. | 30. | 50. |
Carrier gas | He | ||||
Substrate | |||||
Column diameter (mm) | 0.32 | 0.32 | 0.25 | 0.25 | 0.32 |
Phase thickness (μm) | 1. | 1. | 0.25 | 0.1 | 0.5 |
Tstart (C) | 40. | 40. | 40. | -30. | 60. |
Tend (C) | 260. | 230. | 280. | 250. | 250. |
Heat rate (K/min) | 4. | 3. | 4. | 10. | 4. |
Initial hold (min) | 2. | 5. | 2. | 1. | 5. |
Final hold (min) | 10. | 5. | 5. | 5. | 20. |
I | 920. | 917. | 924. | 915. | 934. |
Reference | Methven L., Tsoukka M., et al., 2007 | Deport, Ratel, et al., 2006 | Hierro, de la Hoz, et al., 2004 | Siegmund and Murkovic, 2004 | Bredie, Mottram, et al., 2002 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | BPX-5 | BPX-5 | BPX-5 | DB-1 | BPX-5 |
Column length (m) | 50. | 50. | 50. | 60. | 50. |
Carrier gas | He | He | He | He | He |
Substrate | |||||
Column diameter (mm) | 0.32 | 0.32 | 0.32 | 0.32 | 0.32 |
Phase thickness (μm) | 0.5 | 0.5 | 0.25 | 1. | 0.25 |
Tstart (C) | 60. | 60. | 60. | 40. | 35. |
Tend (C) | 250. | 250. | 250. | 220. | 250. |
Heat rate (K/min) | 4. | 4. | 4. | 2. | 4. |
Initial hold (min) | 5. | 5. | 5. | 5. | 3. |
Final hold (min) | 10. | 10. | 10. | 10. | |
I | 923. | 923. | 929. | 888. | 925. |
Reference | Ames, Guy, et al., 2001 | Ames, Guy, et al., 2001 | Ames, Guy, et al., 2001, 2 | Kim, 2001 | Oruna-Concha, Duckham, et al., 2001 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|---|
Active phase | BPX-5 | CP Sil 8 CB | DB-1 | BPX-5 | BPX-5 |
Column length (m) | 50. | 60. | 60. | 50. | 50. |
Carrier gas | He | He | N2 | He | He |
Substrate | |||||
Column diameter (mm) | 0.32 | 0.25 | 0.25 | 0.32 | 0.325 |
Phase thickness (μm) | 0.25 | 0.25 | 1. | 0.50 | 0.5 |
Tstart (C) | 35. | 40. | 30. | 40. | 50. |
Tend (C) | 250. | 280. | 200. | 280. | 250. |
Heat rate (K/min) | 4. | 4. | 5. | 4. | 4. |
Initial hold (min) | 3. | 2. | 2. | ||
Final hold (min) | 10. | 30. | 10. | ||
I | 936. | 921. | 897. | 933. | 930. |
Reference | Oruna-Concha, Duckham, et al., 2001 | Elmore, Mottram, et al., 2000 | Wu, Wang, et al., 2000 | Aaslyng, Elmore, et al., 1998 | Ames, Defaye, et al., 1997 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
Column type | Capillary | Capillary | Capillary | Capillary |
---|---|---|---|---|
Active phase | HP-1 | DB-1 | SE-30 | DB-1 |
Column length (m) | 50. | 50. | 50. | 60. |
Carrier gas | He | He | ||
Substrate | ||||
Column diameter (mm) | 0.32 | 0.32 | 0.32 | 0.25 |
Phase thickness (μm) | 1.5 | 1.05 | 0.25 | 0.25 |
Tstart (C) | 40. | 40. | 50. | 40. |
Tend (C) | 220. | 260. | 240. | 220. |
Heat rate (K/min) | 2. | 2. | 4. | 2. |
Initial hold (min) | ||||
Final hold (min) | 30. | 40. | 10. | |
I | 888. | 888. | 893. | 892. |
Reference | Zhang, Dorjpalam, et al., 1992 | Izzo and Ho, 1991 | Misharina, Golovnya, et al., 1991 | Zhang and Ho, 1991 |
Comment | MSDC-RI | MSDC-RI | MSDC-RI | MSDC-RI |
References
Go To: Top, Van Den Dool and Kratz RI, non-polar column, temperature ramp, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Methven L., Tsoukka M., et al., 2007
Methven L.; Tsoukka M.; Oruna-Concha M.J.; Parker J.K.; Mottram D.S.,
Influence of sulfur amino acids on the volatile and nonvolatile components of cooked salmon (Salmo salar),
J. Agric. Food Chem., 2007, 55, 4, 1427-1436, https://doi.org/10.1021/jf0625611
. [all data]
Deport, Ratel, et al., 2006
Deport, C.; Ratel, J.; Berdagué, J.-L.; Engel, E.,
Comprehensive combinatory standard correction: A calibration method for handling instrumental drifts of gas chromatography-mass spectrometry systems,
J. Chromatogr. A, 2006, 1116, 1-2, 248-258, https://doi.org/10.1016/j.chroma.2006.03.092
. [all data]
Hierro, de la Hoz, et al., 2004
Hierro, E.; de la Hoz, L.; Ordóñez, J.A.,
Headspace volatile compounds from salted and occasionally smoked dried meats (cecinas) as affected by animal species,
Food Chem., 2004, 85, 4, 649-657, https://doi.org/10.1016/j.foodchem.2003.07.001
. [all data]
Siegmund and Murkovic, 2004
Siegmund, B.; Murkovic, M.,
Changes in chemical composition of pumpkin seeds during the roasting process for production of pumpkin seed oil (Part 2: volatile compounds),
Food Chem., 2004, 84, 3, 367-374, https://doi.org/10.1016/S0308-8146(03)00241-3
. [all data]
Bredie, Mottram, et al., 2002
Bredie, W.L.P.; Mottram, D.S.; Guy, R.C.E.,
Effect of temperature and pH on the generation of flavor volatiles in extrusion cooking of wheat flour,
J. Agric. Food Chem., 2002, 50, 5, 1118-1125, https://doi.org/10.1021/jf0111662
. [all data]
Ames, Guy, et al., 2001
Ames, J.M.; Guy, R.C.E.; Kipping, G.J.,
Effect of pH and temperature on the formation of volatile compounds in cysteine/reducing sugar/starch mixtures during extrusion cooking,
J. Agric. Food Chem., 2001, 49, 4, 1885-1894, https://doi.org/10.1021/jf0012547
. [all data]
Ames, Guy, et al., 2001, 2
Ames, J.M.; Guy, R.C.E.; Kipping, G.J.,
Effect of pH, temperature, and moisture on the formation of volatile compounds in glycine/glucose model systems,
J. Agric. Food Chem., 2001, 49, 9, 4315-4323, https://doi.org/10.1021/jf010198m
. [all data]
Kim, 2001
Kim, J.S.,
Einfluss der Temperatur beim Rösten von Sesam auf Aroma und antioxidative Eigenschaften des Öls, PhD Thesis, Technischen Universität Berlin zur Erlangung des akademischen Grades, Berlin, 2001, 151. [all data]
Oruna-Concha, Duckham, et al., 2001
Oruna-Concha, M.J.; Duckham, S.C.; Ames, J.M.,
Comparison of volatile compounds isolated from the skin and flesh of four potato cultivars after baking,
J. Agric. Food Chem., 2001, 49, 5, 2414-2421, https://doi.org/10.1021/jf0012345
. [all data]
Elmore, Mottram, et al., 2000
Elmore, J.S.; Mottram, D.S.; Hierro, E.,
Two-fibre solid-phase microextraction combined with gas chromatography-mass spectrometry for the analysis of volatile aroma compounds in cooked pork,
J. Chromatogr. A, 2000, 905, 1-2, 233-240, https://doi.org/10.1016/S0021-9673(00)00990-0
. [all data]
Wu, Wang, et al., 2000
Wu, C.-M.; Wang, Z.; Wu, Q.H.,
Volatile compounds produced from monosodium glutamate in common food cooking,
J. Agric. Food Chem., 2000, 48, 6, 2438-2442, https://doi.org/10.1021/jf9907743
. [all data]
Aaslyng, Elmore, et al., 1998
Aaslyng, M.D.; Elmore, J.S.; Mottram, D.S.,
Comparison of the aroma characteristics of acid-hydrolyzed and enzyme-hydrolyzed vegetable proteins produced from soy,
J. Agric. Food Chem., 1998, 46, 12, 5225-5231, https://doi.org/10.1021/jf9806816
. [all data]
Ames, Defaye, et al., 1997
Ames, J.M.; Defaye, A.B.; Bates, L.,
The effect of pH on the volatiles formed in an extruded starch-glucose-lysine model system,
Food Chem., 1997, 58, 4, 323-327, https://doi.org/10.1016/S0308-8146(96)00171-9
. [all data]
Zhang, Dorjpalam, et al., 1992
Zhang, Y.; Dorjpalam, B.; Ho, C.-T.,
Contribution of peptides to volatile formation in the Maillard reaction of casein hydrolysate with glucose,
J. Agric. Food Chem., 1992, 40, 12, 2467-2471, https://doi.org/10.1021/jf00024a026
. [all data]
Izzo and Ho, 1991
Izzo, H.V.; Ho, C.-T.,
Isolation and identification of the volatile components of an extruded autolyzed yeast extract,
J. Agric. Food Chem., 1991, 39, 12, 2245-2248, https://doi.org/10.1021/jf00012a029
. [all data]
Misharina, Golovnya, et al., 1991
Misharina, T.A.; Golovnya, R.V.; Yakovleva, V.N.; Vitt, S.V.,
Pyrazines formed in model glycerin-water systems,
Russ. Chem. Bull. (Engl. Transl.), 1991, 40, 9, 1742-1748, https://doi.org/10.1007/BF00960396
. [all data]
Zhang and Ho, 1991
Zhang, Y.; Ho, C.-T.,
Comparison of the volatile compounds formed from the thermal reaction of glucose with cysteine and glutathione,
J. Agric. Food Chem., 1991, 39, 4, 760-763, https://doi.org/10.1021/jf00004a029
. [all data]
Notes
Go To: Top, Van Den Dool and Kratz RI, non-polar column, temperature ramp, References
- Symbols used in this document:
Tend Final temperature Tstart Initial temperature - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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