In Figure 3, MDGC analysis shows that an unresolved region is cut to a second column, and better resolution results. The original 1D chromatogram presented an unresolved peak cluster at the detector; however the odour at this point could be clearly recognised. If the overlapping components comprised a number of different aroma compounds, the net result will be an overall perception of the total. So, MDGC is able to satisfactorily resolved al the components peaks, and the aroma of eachg can be individually assessed. Here the asterisked peak gave rise to a spicy aroma, according to olfactometry analysis (refs 132, 157, 162).