Abstract 021
Application of Pattern-Recognition Techniques to the Essential Oil of Hops
J. Amer. Soc. Brew. Chem. 42: 54-61, 1984
L.E. Stenroos and K.J. Siebert
The essential oils from 148 hop samples grown in North America and Europe were collected by steam distillation. Capillary column gas chromatography was used to separate and measure the oil constituents. The results were analysed by pattern-recognition and multivariate analysis techniques. The programs that were most successful in classifying the major hop varieties in the sample set were SIMCA and Stepwise Discriminant Analysis. These methods indicated which of the peaks in the chromatograms were characteristic of variety and of growing regions. The results obtained enable estimation of the variety of unknown samples.
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