Effect of Wort Boiling System and Hopping Regime on Wort and Beer Stale-Flavor Aldehydes
Alexandr Mikyška,
Karel Štěrba
Abstract:The main factor responsible for the sensory aging of beer is the increase in off-flavor aldehydes during beer storage. In pilot brews (200 L) of pale lager beer with different hopping regimes and wort boiling systems, 15 carbonyls were monitored using the GC-MS method. Factor analysis revealed several groups of aldehydes with similar behavior during wort boiling. The concentration of most of them decreased with atmospheric wort boiling and increased with the time and energy-saving pressurized boiling system. W… Show more
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