A Love Affair with Yeast
MBAA AWARD OF MERIT LECTURE
MBAA TQ doi:10.1094/TQ-47-4-1015-01 |
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Graham G. Stewart. The International Centre for
Brewing and Distilling, Heriot-Watt University, Edinburgh, Scotland,
EH14 4AS.
Abstract
Yeast is still economically one of the most important microorganism
employed on this planet. In addition, it is a eukaryote with a cellular
structure similar to mammalian cells. Consequently, it has been
extensively used as an �experimental eukaryote,� and many of the findings
have been applied to medical research and molecular biology. My personal
interest in yeast began with the use of yeast as an experimental organism,
and this led to studies on its use in the brewing (and distilling)
industry. In this context, I have studied areas such as flocculation,
culture storage methods, genetic manipulation, wort sugar and amino acid/peptide uptake, high-gravity brewing, and yeast stress effects.
Keywords: ale and lager beer, experimental eukaryote,
flocculation, high-gravity brewing, wort composition and clarity, yeast
S�ntesis
La levadura sigue siendo una de los m�s
importantes microorganismos empleados en el planeta, del punto de vista
econ�mico. Dado que es un eucariota con una estructura celular similar al
de c�lulas mamarias, ha sido usada extensivamente como un �eucariota
experimental� y los resultados de estos experimentos han sido aplicados a
la investigaci�n m�dica y a la biolog�a molecular. Mi inter�s en la
levadura comenz� con el uso de levadura como un organismo experimental y
eso me llev� a conocer su uso en la industria cervecera y de la
destiler�a. He estudiado �reas como floculaci�n, m�todos de almacenaje de
cultivos, manipulaci�n gen�tica, asimilaci�n de azucares del mosto y de
amino �cidos/pept�dicos, proceso �high gravity� y efectos del estr�s sobre
la levadura.
Palabras
claves: cervezas �ale� y �lager,� composici�n y
claridad de mosto, eucariota experimental, floculaci�n, levadura, proceso
�high gravity�
