Selectivity in separation using π electron-rich stationary phases for the comprehensive two-dimensional analysis of cafe espresso

Stevenson, Paul G., Mnatsakanyan, Mariam, Dennis, Gary R. and Shalliker, R. Andrew 2011, Selectivity in separation using π electron-rich stationary phases for the comprehensive two-dimensional analysis of cafe espresso, Journal of separation science, vol. 34, no. 1, pp. 21-26.

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Title Selectivity in separation using π electron-rich stationary phases for the comprehensive two-dimensional analysis of cafe espresso
Author(s) Stevenson, Paul G.
Mnatsakanyan, Mariam
Dennis, Gary R.
Shalliker, R. Andrew
Journal name Journal of separation science
Volume number 34
Issue number 1
Start page 21
End page 26
Total pages 6
Publisher Wiley - V C H Verlag GmbH & Co. KGaA
Place of publication Weinheim, Germany
Publication date 2011-01
ISSN 1615-9306
1615-9314
Keyword(s) coffee
comprehensive heart cutting
2-D-HPLC
phenyl type stationary phase
Summary The multidimensional high-performance liquid chromatography separations of the complex sample matrix found in café espresso coffee were completed on the propyl phenyl and butyl phenyl columns that contain 3 and 4 carbon atoms in the spacer chain, respectively. Phenyl type stationary phases are able to undergo unique π–π interactions with aromatic compounds. Previous works have found that there are differences in retention characteristics between these chain lengths and this was explored further here. It was found that when analysing the separations by quadrants, using a geometric approach to factor analysis and by measuring the normalised mean radius, subtle differences in the separations were observed and the butyl phenyl phase was more selective for the high to medium polarity species. However, there was very little difference in separation behaviour for the hydrophobic components within the coffee sample. Overall, the analysis of the entire separation showed very little difference.
Language eng
Field of Research 030108 Separation Science
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1.1 Refereed article in a scholarly journal
Copyright notice ©2010, Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim
Persistent URL http://hdl.handle.net/10536/DRO/DU:30047843

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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