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High resolution gas chromatographic determination of diterpenic alcohols and sterols in coffee lipids |
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| Authors: | G. Lercker N. Frega F. Bocci M. T. Rodriguez-Estrada |
| Affiliation: | (1) Institute of Agrarian Industries, University of Bologna, via S. Giacomo 7, 40126 Bologna, Italy;(2) Department of Food Technology and Microbiology, Section of Food Industries and Technologies, University of Florence, via Donizetti 6, 50144 Firenze, Italy |
| Abstract: | Summary The composition of the unsaponifiable fraction of coffee lipids extracted before and after roasting was determined in two coffee types (Arabica and Robusta) of different geographic origin. Component identification was performed by gas chromatography-mass spectrometry. Large amounts of diterpene mono-and di-alcohols were found in both varieties; cafestol, kahweol and 16-O-methylcafestol were identified. Other components that were partly generated during roasting were also identified; these compounds seem to arise from the dehydration of cafestol and dehydrocafestol. |
| Keywords: | Gas chromatography-mass spectrometry Coffee lipids Diterpenic alcohols Sterols |
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