The importance of the parameters pH-value and boiling temperature in the brewery on the primary gushing is given.
The impact of pellet hopping at the start of the wort boiling process on the overfoaming volume is mainly dependant on the selected hop variety. A significant decline of the gushing volume can be achieved by the usage of hop products which are not accordant to the German purity law.
In the stage of fermentation the vitality of the yeast plays a bigger role than the temperature.
The inhibitory effect of protein-precipitating polyphenols on the overfoaming is shown by tannic acids.
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