Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

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


Normal alkane RI, 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 CapillaryCapillaryCapillaryCapillaryCapillary
Active phase DB-WaxDB-WaxDB-WaxTC-WaxDB-Wax
Column length (m) 30.30.30.60.60.
Carrier gas Helium HeHeHe
Substrate      
Column diameter (mm) 0.250.250.250.250.32
Phase thickness (mum) 0.250.250.250.50.25
Tstart (C) 40.40.40.40.40.
Tend (C) 210.200.210.230.230.
Heat rate (K/min) 3.8.5.3.6.
Initial hold (min)  3. 8. 
Final hold (min)  20.  20.
I 1493.1504.1499.1504.1478.
ReferenceKumazawa, Sakai, et al., 2010Schirack, Drake, et al., 2006Kumazawa, Kubota, et al., 2005Ishikawa, Ito, et al., 2004Akiyama, Murakami, et al., 2003
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillaryCapillaryCapillaryCapillary
Active phase DB-WaxDB-WaxDB-FFAPDB-WaxDB-Wax
Column length (m) 30.60.30.30.30.
Carrier gas HeHeHeHeHe
Substrate      
Column diameter (mm) 0.250.250.320.530.25
Phase thickness (mum) 0.250.250.251. 
Tstart (C) 40.40.40.40.70.
Tend (C) 210.210.230.225.160.
Heat rate (K/min) 5.5.6.6.2.
Initial hold (min)   2.5.8.
Final hold (min)   5.30. 
I 1499.1499.1480.1490.1488.
ReferenceKumazawa and Masuda, 2002Kumazawa and Masuda, 2002Sanz, Czerny, et al., 2002Cadwallader and Heo, 2001Wong and Bernhard, 1988
Comment MSDC-RI MSDC-RI MSDC-RI MSDC-RI MSDC-RI
Column type CapillaryCapillary
Active phase Carbowax 20MCarbowax 20M
Column length (m) 50.50.
Carrier gas HydrogenN2
Substrate   
Column diameter (mm) 0.200.22
Phase thickness (mum)   
Tstart (C) 50.80.
Tend (C) 200.200.
Heat rate (K/min) 1.2.
Initial hold (min)   
Final hold (min) 35. 
I 1515.1459.
ReferenceWu, Liou, et al., 1987Mihara and Enomoto, 1985
Comment MSDC-RI MSDC-RI

References

Go To: Top, Normal alkane RI, 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.

Kumazawa, Sakai, et al., 2010
Kumazawa, K.; Sakai, N.; Amma, H.; Sakamoto, S.; Kodama, M.; Wada, Y.; Nishimura, O., Identification and formation of volatile components responsible for the characteristic aroma of Mat Rush (Igusa), Biosci. Biotechnol. Biochem., 2010, 74, 6, 1231-1236, https://doi.org/10.1271/bbb.100053 . [all data]

Schirack, Drake, et al., 2006
Schirack, A.V.; Drake, M.A.; Sander, T.H.; Sandeep, K.P., Characterization of aroma-active compounds in microwave blanched peanuts, J. Food Sci., 2006, 71, 9, c513-c520, https://doi.org/10.1111/j.1750-3841.2006.00173.x . [all data]

Kumazawa, Kubota, et al., 2005
Kumazawa, K.; Kubota, K.; Masuda, H., Influence of Manufacturing Conditions and Crop Season on the Formation of 4-Mercapto-4-methyl-2-pentanone in Japanese Green Tea (Sen-cha), J. Agric. Food Chem., 2005, 53, 13, 5390-5396, https://doi.org/10.1021/jf050392z . [all data]

Ishikawa, Ito, et al., 2004
Ishikawa, M.; Ito, O.; Ishizaki, S.; Kurobayashi, Y.; Fujita, A., Solid-phase aroma concentrate extraction (SPACE ): a new headspace technique for more sensitive analysis of volatiles, Flavour Fragr. J., 2004, 19, 3, 183-187, https://doi.org/10.1002/ffj.1322 . [all data]

Akiyama, Murakami, et al., 2003
Akiyama, M.; Murakami, K.; Ohtani, N.; Iwatsuki, K.; Sotoyama, K.; Wada, A.; Tokuno, K.; Iwabuchi, H.; Tanaka, K., Analysis of volatile compounds released during the grinding of roasted coffee beans using solid-phase microextraction, J. Agric. Food Chem., 2003, 51, 7, 1961-1969, https://doi.org/10.1021/jf020724p . [all data]

Kumazawa and Masuda, 2002
Kumazawa, K.; Masuda, H., Identification of potent odorants in different green tea varieties using flavor dilution technique, J. Agric. Food Chem., 2002, 50, 20, 5660-5663, https://doi.org/10.1021/jf020498j . [all data]

Sanz, Czerny, et al., 2002
Sanz, C.; Czerny, M.; Cid, C.; Schieberle, P., Comparison of potent odorants in a filtered coffee brew and in an instant coffee beverage by aroma extract dilution analysis (AEDA), Eur. Food Res. Technol., 2002, 214, 4, 299-302, https://doi.org/10.1007/s00217-001-0459-9 . [all data]

Cadwallader and Heo, 2001
Cadwallader, K.R.; Heo, J., Aroma of roasted sesame oil: characterization by direct thermal desorption-gas chromatography-olfactometry and sample dilution analysis, Am. Chem. Soc. Symp. Ser., 2001, 782, 187-202. [all data]

Wong and Bernhard, 1988
Wong, J.M.; Bernhard, R.A., Effect of nitrogen source on pyrazine formation, J. Agric. Food Chem., 1988, 36, 1, 123-129, https://doi.org/10.1021/jf00079a032 . [all data]

Wu, Liou, et al., 1987
Wu, C.-M.; Liou, S.-E.; Chang, Y.-H.; Chiang, W., Volatile compounds of the wax gourd (Benincasa hispida, Cogn) and a wax gourd beverage, J. Food Sci., 1987, 52, 1, 132-134, https://doi.org/10.1111/j.1365-2621.1987.tb13988.x . [all data]

Mihara and Enomoto, 1985
Mihara, S.; Enomoto, N., Calculation of retention indices of pyrazines on the basis of molecular structure, J. Chromatogr., 1985, 324, 428-430, https://doi.org/10.1016/S0021-9673(01)81342-X . [all data]


Notes

Go To: Top, Normal alkane RI, polar column, temperature ramp, References