Relationship Between Grain Hardness and Malting Quality of Barley (Hordeum vulgare L.) |
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| Authors: | V. Psota K. Vejražka O. Faměra M. Hrčka |
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| Affiliation: | 1. Malting Institute, Brno, Research Institute of Brewing and Malting, Plc., Prague, Czech Republic.;2. Department of Crop Science, Breeding and Phytopathology, Mendel University of Agriculture and Forestry, Brno, Czech Republic.;3. Department of Agriculture Products Quality, Czech University of Agriculture, Prague, Czech Republic. |
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| Abstract: | In a three‐year period, protein content, polysaccharides and values of the selected malting parameters were determined in 12 varieties of barley. Hardness was assessed using the particle size index (PSI) and a Do‐Corder apparatus (BRA). Significant differences in the levels of hardness between the varieties were detected. Hardness was affected by variety from 37% (PSI) and 71% (BRA). Significant correlations were determined between the PSI and extract content (0.64***), Kolbach index (0.66***), friability (0.57***), β‐glucans in wort (?0.51***) and colour of malt (0.57***). Significant correlations were found between BRA and content of non‐starch polysaccharides in caryopses (0.64***), extract (?0.62***), Kolbach index (?0.70***), friability (?0.70***), β‐glucans in wort (0.79***) and wort colour (?0.56***). Correlation was determined between hardness and malting quality index (PSI 0.51***, BRA ?0.71***). |
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| Keywords: | Barley β ‐glucans Brabender hardness PSI quality |
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