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Cloning of Wheat LTP1500 and Two Fusarium culmorum Hydrophobins in Saccharomyces cerevisiae and Assessment of Their Gushing Inducing Potential in Experimental Wort Fermentation
Author(s) -
Zapf Michael W.,
Theisen Simone,
Vogel Rudi F.,
Niessen Ludwig
Publication year - 2006
Publication title -
journal of the institute of brewing
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.523
H-Index - 51
eISSN - 2050-0416
pISSN - 0046-9750
DOI - 10.1002/j.2050-0416.2006.tb00719.x
Subject(s) - saccharomyces cerevisiae , hydrophobin , fusarium culmorum , yeast , fermentation , cloning (programming) , chemistry , biochemistry , food science , gene , biology , fusarium , botany , computer science , programming language
The potential of surface active proteins to affect gushing upon their formation in situ during fermentation was investigated. This was achieved by cloning the genes of two hydrophobins of F. culmorum and of a wheat lipid transfer protein (LTP1500) in Saccharomyces cerevisiae , with expression of these genes under control of the constitutive TPI (triose phosphate isomerase) promoter. The transgenic yeast clones were used for fermentation of wort. The resulting beers were bottled and examined for the occurrence of gushing. Gushing was induced by the class II hydrophobin FcHyd5p of the fungus F. culmorum , found in naturally occurring cases of gushing worldwide.