Time-resolved electron paramagnetic resonance (TREPR) data collected during the photodegradation of iso-a-acids (isohumulones), the principal bittering agents from hops in beer, are presented and discussed, and, from the data, the photophysics leading to free-radical production as the primary step in the photodecomposition of iso-a-acids towards the development of "skunky" beer are explained.
Origin
University Of North Carolina, Usa
Journal Title
Chem Eur J 7 21 2001 4554-4561
Sector
General
Class
G 2461