Kvasny Prum. 2013; 59(7-8): 181-189 | DOI: 10.18832/kp2013018

The dependence of malt quality on the variety and year.Peer-reviewed article

Štefan DRÁB, Vratislav PSOTA, Helena FRANČÁKOVÁ, Lenka SACHAMBULA, Jiří HARTMANN, Marián TOKÁR
1 SPU, Katedra skladovania a spracovania rastlinných produktov, Tr. A. Hlinku 2, SK-949 76 Nitra, Slovenská republika
2 VÚPS, a. s., Sladařský ústav, Mostecká 7, CZ-614 00 Brno, Česká republika
3 ÚKZÚZ, Hroznová 2, CZ-656 06 Brno, Česká republika

Eleven spring barley varieties from harvest years 2009, 2010 and 2011 were studied. Eight basic technological parameters of malt for the determination of malting quality of barley were assessed: content of nitrogenous substances in barley, malt extract, relative extract at 45 °C, Kolbach index, diastatic power, apparent attenuation, friability and β-glucan content in sweet wort. Results of the statistical analysis showed that the variety, year and locality significantly affected the studied parameters and contributed to a variability of the individual parameters from 6.61 % to 60.12 %. The highest effect of the genetic material was recorded in the parameter of diastatic power. Differences between years affected especially a variability of Kolbach index. More positive and negative statistically significant relationships were determined between the studied parameters (protein content and friability r = 0.46; extract and friability r = 0.55; relative extract at 45 °C and Kolbach index r = 0.53; friability and b-glucan content in wort r = 0.53).Eleven spring barley varieties from harvest years 2009, 2010 and 2011 were studied. Eight basic technological parameters of malt for the determination of malting quality of barley were assessed: content of nitrogenous substances in barley, malt extract, relative extract at 45 °C, Kolbach index, diastatic power, apparent attenuation, friability and β-glucan content in sweet wort. Results of the statistical analysis showed that the variety, year and locality significantly affected the studied parameters and contributed to a variability of the individual parameters from 6.61 % to 60.12 %. The highest effect of the genetic material was recorded in the parameter of diastatic power. Differences between years affected especially a variability of Kolbach index. More positive and negative statistically significant relationships were determined between the studied parameters (protein content and friability r = 0.46; extract and friability r = 0.55; relative extract at 45 °C and Kolbach index r = 0.53; friability and b-glucan content in wort r = 0.53).

Keywords: spring barley, variety, year, technological parameters

Received: May 6, 2013; Accepted: June 2, 2013; Published: July 1, 2013 

References

  1. Anderson, R. G., 2000: Current practice in Malting, Brewing and Distilling. In Morris, P. C., Bryce, J. H., 2000: Cereal Biotechnology. Woodhead, Cambridge: 183-215. ISBN 978-1-85573-498-2. Go to original source...
  2. Arends, A. M., Fox, G. P., Henry, R. J., Marschke, R. J., Symons, M. H., 1995: Genetic and Environmental Variation in the Diastatic Power of Australian Barley. Journal of Cereal Science, 21(1): 63-70. Go to original source...
  3. Basařová, G., 2010: Suroviny pro výrobu piva. In Basařová, G.
  4. Šavel J., Basař, P., Lejsek, T., 2010: Pivovarství. Vydavatelství VŠCHT, Praha: 3-111. ISBN 978-80-7080-734-7.
  5. Briggs, D. E., Boulton, Ch. A., Brooks, P. A., Stevens, R.: 2004: Brewing Science and Practice. CRC Press, Boca Raton. ISBN 0-8493- 2547-1. EBC, 2009: Analytica-EBC. 3 Barley: 3.3.2 Total nitrogen of barley: Dumas combustion Metod; 4 Malt: 4.5.1 Extract of malt: Congress mash, 4.9.3 Soluble nitrogen of malt: Dumas combustion, 4.11.1 Fermantability, Final attenuation of laboration wort from malt, 4.12 Diastatic power of malt, 4.15 Friability, glassy corns and unmodified grains of malt by friabilimeter, 4.16.2 High molecular weight β-glucan content of malt: Fluorimetric method; Getränke-Fachverlag Hans Carl, Nürnberg, Germany. ISBN 3-418- 00759-7.
  6. Fox, G. P., Panozzo, J. F., Li, C. D., Lance, R. C. M., Inkerman, P. A., Henry, R. J., 2003: Molecular Basis of Barley Quality. Australian Journal of Agricultural Research, 54(12): 1081-1101. Go to original source...
  7. Gibson, T. S., Solah, V., 1995: Diastatic Power in Malted Barley: Contributions of Malt Parameters to its Development and the Potential of Barley Grain Beta-Amylase to Predict Malt Diastatic Power. Journal of the Institute of Brewing, 101(4): 277-280. Go to original source...
  8. Gupta, M., Abu-Ghannam, N., Gallaghar, E., 2010: Barley for Brewing: Characteristic Changes during Malting, Brewing and Applications of its By-Products. Comprehensive reviews in food science and food safety, 9:318-328. Go to original source...
  9. Güler, M., 2003: Barley Grain β-Glucan Content as Affected by Nitrogen and Irrigation. Field Crops Research, 84(3): 335-340. Go to original source...
  10. Hartman, I., Prokeš, J., Helánová, A., Hartmann, J., 2010: The Relationship between Barley Starch Content and Malt Extract. Kvasny Prum., 56(11-12): 423-427. Go to original source...
  11. Heisel, S. E., 2006: Providing Cereals for Brewing. In Bamforth, C. W., 2006: Brewing, New Technologies. CRC Press, Boca Raton: 10-29. ISBN 978-0-8493-9159-0. Go to original source...
  12. Kendall, N. T., 1998: Malting Barley in Canada 1987-1997. MBAA Technical Quarterly, 35(1): 31-33.
  13. Kosař, K., Psota, V., Havlová, P., Šusta, J., 2000: Sladovnický ječmen. In Kosař, K., Procházka, S., 2000: Technologie výroby sladu a piva. VÚPS, Brno: 30-63. ISBN 80-902658-6-3.
  14. Kreisz, S., 2009: Malting. In Eßlinger, H. M., 2009: Handbook of Brewing: Processes, Technology, Markets. WILEY-VCH, Weinheim. 147-164. ISBN 978-3-527-31674-8. Go to original source...
  15. Križanová, K., Psota, V., Sleziak, Ľ., Žofajová, A., Gubiš, J., 2010: Spring Barley Breeding for Malting Quality. Potravinárstvo, 4(2): 39-44. ISSN 1337-0960. Go to original source...
  16. Kuusela, P., Hämäläinen, J. J., Reinikainen, P., Olkku, J., 2004: A Simulation Model for the Control of beta-Glucanase Activity and beta-Glucan Degradation during Germination in Malting. Journal of the Institute of Brewing, 110(4): 309-319. Go to original source...
  17. Li, Y., Schwarz, P. B., Barr, J. M., Horsley, R. D., 2008: Factors Predicting Malt Extract within a Single Barley Cultivar. Journal of Cereal Science, 48(2): 531-538. Go to original source...
  18. Líšková, M., Frančáková, H., Mareček, J., 2011: Changes of Crude Protein Content in Malting Barley Influenced by Post-Harvest Ripening. Journal of Central European Agriculture, 12(1): 92-102. Go to original source...
  19. MEBAK, 2011: Raw material. Malz: 3.1.4.11 Maischmethode nach Hartong-Kretschmer VZ 45 °C. Mitteleuropäischen Brautechnischen Analysenkommission, Freising-Weihenstephan, Germany.
  20. Meussdoerffer, F., Zarnkow, M., 2009: Starchy Raw Materials. In Eßlinger, H. M., 2009: Handbook of Brewing: Processes, Technology, Markets. WILEY-VCH, Weinheim: 43-83. ISBN 978-3-527- 31674-8. Go to original source...
  21. Molina-Cano, J.-L., Rubió, A., Igartua, E., Gracia, P., Montoya, J.-L., 2000: Mechanisms of Malt Extract Development in Barleys from Different European Regions: I. Effect of Environment and Grain Protein Content on Malt Extract Yield. Journal of the Institute of Brewing. 106(2): 111-115. Go to original source...
  22. Nie, C., Wang, CH., Zhou, G., Dou F., Huang, M., 2010: Effects of Malting Conditions on the Amino Acid Compositions of Final Malt. African Journal of Biotechnology, 9(53): 9018-9025.
  23. Nielsen, J. P., Munck, L., 2003: Evaluation of Malting Barley Quality Using Exploratory Data Analysis. I. Extraction of Information from Micro-Malting Data of Spring and Winter Barley. Journal of Cereal Science, 38(2) 173-180. Go to original source...
  24. Oscarsson, M., Andersson, R., Åman, P., Olofsson, S., Jonsson, A., 1998: Effects of Cultivar, Nitrogen Fertilization Rate and Environment on Yield and Grain Quality of Barley. Journal of the Science of Food and Agriculture, 78(3): 359-366. Go to original source...
  25. Pérez-Vendrell, A. M., Brufau, J., Molina-Cano, J. L., Francesch, M., Guasch, J., 1996: Effects of Cultivar and Environment on β-(1,3)- -(1,4)-D-Glucan Content and Acid Extract Viscosity of Spanish Barleys. Journal of Cereal Science, 23(3): 285-292. Go to original source...
  26. Psota, V., Kosař, K., 2002: Ukazatel sladovnické kvality. Kvasny Prum., 48(6): 142-148. Go to original source...
  27. Psota, V., Horáková, V., Kopřiva, R., 2008: Barley Varieties Registered in the Czech Republic in 2008. Kvasny prum., 54(6): 186-192. Go to original source...
  28. Wang, J., Zhang, G., Chen, J., Shen, Q., Wu, F., 2003: Genotypic and Environmental Variation in Barley beta-Amylase Activity and its Relation to Protein Content. Food Chemistry, 83(2): 163-165. Go to original source...
  29. Wang, J., Zhang, G., Chen, J., Wu, F., 2004: The Changes of β-Glucan Content and β-Glucanase Activity in Barley before and after Malting and their Relationships to Malt Qualities. Food Chemistry, 86(2) 223-228. Go to original source...
  30. Wackerbauer, K., Zufall, C., 1997: From Malthouse to Brewery - Malt Specification and Analysis. Brauwelt International, 15: 22-29. Go to original source...
  31. Yin, C., Zhang, G.-P., Wang, J.-M., Chen J.-X., 2002: Variation of Beta-Amylase Activity in Barley as Affected by Cultivar and Environment and its Relation to Protein Content and Grain Weight. Journal of Cereal Science, 36(3): 307-312. Go to original source...

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