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The Volatility of Dimethyl Sulfide in Water in Infinite Dilution Measured by Rayleigh Distillation and Dohnal Method
H. Scheuren, M. Dillenburger, J. Tippmann, F.-J. Methner and K. Sommer

This work is about the volatility of dimethyl sulfide (DMS) in water in infinite dilution. DMS is an important flavour indicative for the wort quality. It is an unwanted flavour component whose reduction by vaporisation is of great interest for the brewer. Different vaporisation systems are available which perform vaporisation at different temperatures. For validating their vaporisation effectivity the temperature dependent volatility of DMS has to be known. Therefore the volatility of dimethyl sulfide is measured by Rayleigh distillation and Dohnal method in a broad temperature range. The resulted values confirm recently published data measured with flash distillation and disclose a volatility maximum at low temperatures.

Descriptors: dimethyl sulfide, DMS, volatility, wort, vaporisation, overall-evaporation

BrewingScience Monatsschrift fr Brauwissenschaft, 67 (September/October 2014), pp. 116-119