Abstract
In connection with investigations on flavour-related carbonyl compounds and the chemical classification of the geographical and floral origin of honey, the compound (S)-(+)-dehydrovomi folio [4-cyclohexene-3-one-6-hydroxy-1,1,5-trimethyl-6-(3oxo-l-butenyl)] was isolated from heather honey by HPLC and identified for the first time in honey by ultraviolet, infrared and nuclear-magnetic-resonance spectroscopy, mass spectrometry and polarimetry. After the isolation of the carbonyl compounds by derivatisation with Girard-T reagent and gas chromatography, heather honeys showed an (S)-(+)-dehy-drovomifoliol content of 56–264 mg/kg, whereas honeys from eight other floral origins contained only 0.033 to 6 mg/kg of this compound. The isolated compound was odourless, but the great difference in the (S)-(+)-dehydrovomifoliol content between heather honey and the honeys of other floral origin may offer the possibility of determining adulterations of heather honey.
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