Determination of sensory active compounds in hops using GC-MS

Determination of sensory active compounds in hops using GC-MS Abstract The goal of this thesis was to determine sensory active compounds from a sample of hops by gas chromatographic-mass spectrometric detection. Hop oils were selected for this determination which, despite its low representation in hops, contain up to several hundred components. Hop oils were exctracted using a new method based on fluidized-bed extraction. An integral part of this work was identifying the yield of the method that has become an instrument to defining the content of hop oils in different hop varieties. A comparsion of the obtained extracts with the literature was made and a search was done for the link between chemical structure of the hop oils and their representation in the hops sample with regard to its age. Keywords: exctraction, hops, hop oil, gas chromatography, mass spectrometr