Yeast and Fermentation Session
Thomas Tyrell, Versuchs- und Lehranstalt für Brauerei, Berlin, Germany
Co-author(s): Steve Eglin, Technische University, Dresden, Germany;
Rolf Exner, Eckert & Wellmann GmbH, Berlin, Germany; Roland Folz and
Christoph Uhde, Versuchs- und Lehranstalt für Brauerei, Berlin, Germany
ABSTRACT: Testing of yeast properties is mainly done in so
called EBC fermentation test tubes. There dimension allows, in
comparison to other fermentations in laboratory scale, a relatively high
liquid column with only 2 L of volume. This simulates a certain
sedimentation height and static pressure to the yeast. These dimensions
come closer to a real fermentation then fermentations in other
laboratory equipment. Nevertheless the well-established EBC test tubes
have their limitations in further oxygen free processing of the
fermented beer and test fermentations under higher CO2
concentrations. Additionally the handling of these relatively fragile
tubes is not very practical. For that reason at VLB Berlin new
fermentation test tubes have been developed and were presented at the
last EBC Conference in Glasgow in 2011. This poster presents
standardized methods for yeast propagation before and after beer
handling (filtration and oxygen free bottling) in fermentation trials
and gives an overview of possible applications.
Thomas Tyrell
apprenticed as a brewer and maltster at the Pott’s Brauerei in Oelde,
Germany, from 1991 to 1994. After his apprenticeship, from 1994 to 2001
he gained working experience in different breweries, including Saxer
Brewing Company (Portland, OR), Wettringer Brauhaus (Wettringen,
Germany), Weißbräu Brauhaus (Cologne, Germany), and Magister Cervecerías
Artesanales (La Coruña, Spain). Studying in Berlin at the Technical
University he received a Diplom Ingenieur degree in brewing science
(2001–2006) (diploma thesis at Cervecería Polar, Caracas Venezuela).
Since early 2007 he has been at VLB, and since 2008 part of the VLB
Department of Brewing and Beverage Science & Applications. At VLB he
is responsible for research/consulting projects. In addition
coordination of the institute’s activities for Iberoamerica are part of
his responsibilities.
VIEW PRESENTATION 239