Study on influence of some technological factors on high gravity brewing.

Abstract

This research focussed on the influence of some technological factors on the high gravity brewing. With the 20oBal wort prepared from 80% malt and 20% rice, pH 5.4 – 5.6, amonium sulphate addition (90mg nitrogen/L) or medium aeration during the first 12 fermenting hours increased the substrate assimilation rate and decreased the fermentation time. The ethanol concentration in the green beer can reach above 10%(v/v).These technological parameters can be applied in practice for high gravity brewing.