Abstract 005
Gas Chromatographic Determination of Beer Volatiles by Carbon Disulfide Extraction: Improved Methodology, Data Handling, and Interpretation
J. Amer. Soc. Brew. Chem. 34: 4-13, 1976
L.E. Stenroos, K.J. Siebert, and M.C. Meilgaard
The reproducibility of CS2 extraction was improved by decreasing the proportion of salt added and by standardizing the conditions. A new liquid phase and the use of glass columns and Teflon-faced septa led to better gas chromatographic separation and reproducibility. An autoinjector and a computing integrator provided further improvements
and greater convenience of operation. A computer program was developed which prints out the results for each peak and produces a statistical summary of repeat detn. It also calculates the probable flavour significance of the analysis employing known flavour thresholds and interactions. Use of the method is illustrated with a study of the
course of commercial fermentations in open and closed vessels. A number of domestic and imported beers and malt liquors were also analysed.
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