Reduced urination rate while drinking beer with an unpleasant taste and off-flavor

A lowered subjective evaluation of the taste and flavor of beer due to stal eness or to the addition of an unpleasant taste and flavor was found to be closely correlated with the urination rate. Beer in the same lot was compar ed immediately after shipment from the brewery and after leaving at room te mperature far 1 month or 5 months. Each beer sample was given to volunteers at the rate of 3 ml/kg/15 min for 2 hours, and the urine volume was measur ed every. 30 minutes. The urination rate was highest from the volunteers wh o drank fresh beer and lowest from those who drank 5-month-old beer. The su bjective evaluation of both the taste and drinkability of 5-month-old beer was significantly lower than that of fresh beer. Beer samples with various unpleasant taste and flavor substances added lowered the urination Fate. Th e results suggest that the perception of an unpleasant taste and off-flavor would lower the urination rate.