PROCTOR BARLEY AND ITS MALT

Abstract
Attempts have been made to relate the properties of 89 samples of malt to the total nitrogen content of the barley and the modification of this nitrogen. The significance of different concentrations of malt permanently-soluble nitrogen and wort nitrogen as yeast-feeding and potential haze-forming material is discussed. A modified extract-prediction equation involving nitrogen and 1,000-corn weight is given, as is also an alternative equation which does not involve 1,000-corn weight and which Is preferred. The opportunity is taken to stress the importance of the fine-coarse extract difference as a guide to modification. The results of hand valuation assessment of Proctor barley must be confirmed by nitrogen determinations.

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