Quantitation of the odour-active compounds in Andes berry (Rubus glaucus Benth) fruit using the molecular sensory approach

The odour-active volatiles of Andes berry fruit (Rubus glacus Benth) were isolated by solvent-assisted flavour evaporation. Subsequent gas chromatography-olfactometry and gas chromatography coupled to mass spectrometry analyses and application of stable isotopic dilution analyses allow identifying 2-heptanol and ethyl butanoate as key aroma compounds in this fruit. Other relevant odorants were 4-hydroxy-2,5-dimethyl-3(2H)-furanone and ethyl benzoate, because of their contribution to the overall Andes berry aroma (high OAVs).