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DisplayTitle Using Exogenous Enzymes to Boost Biotransformation
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AbstractBiotransformation has become a buzzword in the brewing
community, with many brewers even performing dry hopping at certain specific
times to hit what is considered to be the “biotransformation sweet spot.”
Academic literature does not support these claims. With the aid of enzymes developed for the wine industry, two experimental
IPA beers were brewed: one with an enzyme preparation aimed at
hydrolyzing glycosides and the other with a β-lyase preparation aimed at
releasing bound thiols. Triangle tests for each treatment were carried out by a
panel of over 25 participants, composed of brewers and judges, and showed that
both beers were significantly different from the control, yet preference was
overwhelmingly toward the no-enzyme IPA control beer. Furthermore, the
descriptive analysis carried out by the same panel showed a clear trend toward
both enzyme beers being less tropical/fruity and more herbal and/or citrusy,
the exact opposite of the purported benefit of biotransformation.
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