Influence of the Driving Medium on the Gas Content in Beer and on Beer Sensorics
Martin Slabý | Jana Olšovská | Pavel Čejka
The choice of technology used for keg beer tapping has a considerable influence on his final taste and quality. The presence of oxygen has a substantial impact, causing rapid oxidative changes in draft beer that result in rapid aging, and the beer will acquire characteristic oxidative aroma and taste. When using inert driving gas, this phenomenon is suppressed but, as demonstrated in the present pilot study, the composition of the driving gas has an impact on the sensory profile of beer. The results show that the optimal ratio of nitrogen and carbon dioxide in the driving medium cannot be strictly determined since various kinds of beer and different speeds of draft require a different composition of driving media.
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