Kvasny Prum. 2010; 56(11-12): 423-427 | DOI: 10.18832/kp2010043

The relationship between barley starch content and malt extract.Peer-reviewed article

Ivo HARTMAN, Josef PROKEŠ, Alena HELÁNOVÁ, Jiří HARTMANN
1 Výzkumný ústav pivovarský a sladařský, a. s., Sladařský ústav, Mostecká 7, CZ-614 00 Brno
2 Ústřední kontrolní a zkušební ústav zemědělský, CZ-656 06 Brno

Barley samples from harvest 2005-09 were evaluated. Samples with high and low starch content were malted and malt extract was determined. The aim was to assess the relationship between a previous crop, barley yield, sieving fractions over 2.5 mm, barley technological quality and starch content and further to determine the effect of starch content on malt yield, malt extract and theoretical extract yield in malt per hectare. Starch content affected statistically significantly extract content in malt and thus also extract yield per hectare. Statistically highly significant negative correlation between the content of nitrogenous substances and starch content in barley, malt extract and barley yield was determined.Barley samples from harvest 2005-09 were evaluated. Samples with high and low starch content were malted and malt extract was determined. The aim was to assess the relationship between a previous crop, barley yield, sieving fractions over 2.5 mm, barley technological quality and starch content and further to determine the effect of starch content on malt yield, malt extract and theoretical extract yield in malt per hectare. Starch content affected statistically significantly extract content in malt and thus also extract yield per hectare. Statistically highly significant negative correlation between the content of nitrogenous substances and starch content in barley, malt extract and barley yield was determined.

Keywords: barley, extract, malt, starch

Received: September 10, 2010; Accepted: October 14, 2010; Published: November 1, 2010 

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