Kvasny Prum. 2011; 57(7-8): 246-252 | DOI: 10.18832/kp2011027

Influencing malt quality by exogenous ethylene application performed in the course of post-harvest ripening of barley grain.Peer-reviewed article

Ivo HARTMAN, Helena FIŠEROVÁ, Alena HELÁNOVÁ, Josef PROKEŠ, Jiří HARTMANN
1 Výzkumný ústav pivovarský a sladařský, a.s., Sladařský ústav Brno, Mostecká 7, 614 00 Brno
2 Mendelova univerzita v Brně, Zemědělská 1, 613 00 Brno
3 Ústřední kontrolní a zkušební ústav zemědělský, Hroznová 2, 656 02 Brno

As compared with result obtained in the control variant, the technology of storage in a micro malting house with an increased level of ethylene (200 to 300 nl.l-1) in exchanged air statistically significant positive effect on values of malt extract yield, relative extract at 45 °C, degree of attenuation, diastatic power, Kolbach index, content of beta-glucans in malt, malt homogeneity and malt modification.As compared with result obtained in the control variant, the technology of storage in a micro malting house with an increased level of ethylene (200 to 300 nl.l-1) in exchanged air statistically significant positive effect on values of malt extract yield, relative extract at 45 °C, degree of attenuation, diastatic power, Kolbach index, content of beta-glucans in malt, malt homogeneity and malt modification.

Keywords: dormancy, barley cultivars, malting, micromalting box

Received: April 22, 2011; Accepted: June 24, 2011; Published: July 1, 2011 

References

  1. Fišerová, H., Hartmann, J., Prokeš, J., Helánová, A.: Složení mezizrnného plynu při klíčení ječmene jarního a jeho vliv na jakost sladu (Composition of intergrain gas in the course of spring barley germination and its effect on malt quality, in Czech).Kvasny Prum. 53, 2007: 308-309.
  2. Gualano, N. A., Benech-Arnold, R. L.: The effect of water and nitrogen availability during grain filling on the timing of dormancy release in malting barley crops. Euphytica. 168, 2009: 291-301. Go to original source...
  3. Woods, J. L., McCallum, D. J.: Dormancy in malting barley: Quantifying the effect of storage temperature on different varieties and the response to sudden cooling.Journal of the institute of brewing, 106, 2000, 251-258. Go to original source...
  4. Jacobsen, E.E., Miller, B., Munck, L.,Woods, J.L.:Drying, heating and their effects on dormancy break and germination rate decline. Stored Malting Barley, Reims, France, 2001, 31-47.
  5. Robson, E. J., Woods, J. L.: Dormancy in stored malting barley: Quantifying the rate of break and the effect of cooling. J.Inst.Brew.107, 2001, 389-397. Go to original source...
  6. Fišerová, H., Hradilík, J., Procházka, S., Klemš, M., Ráčilová, A.: Formation of ethylene, ethane and abscisic acid content in relation to dormancy of spring barley (Hordeum vulgare L.) kernels. Rostlinná výroba 42, 1996, 245-248.
  7. Eastwell, C., Spencer, M. S.: Ethylene effect on amylase activity from isolated barley aleurone layers - possible modification by proteolytic enzymes. Plant Physiol. 70, 1982, 849-852. Go to original source...
  8. Burg, S. P., Burg, E. A.: Ethylene formation in pea seedlings. Its relation to the inhibition of bud growth caused by indole-3-acetic acid. Plant Physiol. 43, 1968, 1069-1074. Go to original source...
  9. Prokeš, J., Fišerová, H., Helánová, A., Hartmann, J.: Význam oxidu uhličitého a ethylenu v procesu sladování (Importance of carbon dioxide and ethylene during the process of malting, in Czech). Kvasny Prum. 52, 2006: 349-352. Go to original source...
  10. Prokeš, J., Fišerová, H., Helánová, A., Hartmann, J.:Effect of exogenous factors on malt quality. Kvasný Prům. 55, 2009, 122-126. Go to original source...
  11. Fišerová, H., Prokeš, J., Helánová, A., Hanuš,V.:Změny plynného prostředí při výrobě sladu (Changes in gas environment during the process of malting, in Czech). In: 5. metodické dny. 1. vyd. Praha 2009, s. 51.
  12. Fišerová, H., Prokeš, J., Helánová, A., Hartmann, J.:Effect of Barley Kernels Dormancy on the Malt Quality. In: Book of abstracts, ESNA - European society for new methods in agricultural research, 39th Annual meeting, Brno, MZLU, 2009, ISBN 978-807375-319-1. b
  13. Prokeš, J., Fišerová, H., Helánová, A., Hartmann, J.: Effect of Interaction between Barley Dormancy and Exogenous Conditions of Germination on Selected Malt Quality Parameters.In 32nd EBC CONRESS. 1. vyd. 2009, s. 74.b
  14. Fišerová, H., Prokeš, J., Helánová, A., Hartmann, J.: Změny kvality sladu v průběhu posklizňového dozrávání ječmene (Changes in malt quality in the course of post-harvest ripening of barley). Kvasny Prum. 58, 2010: 93-99. Go to original source...
  15. Fišerová, H., Kula, E., Klemš, M., Reinöhl, V.: Phytohormones as indicators of the degree of damage in birch (Betula pendula).Biol., Bratislava 56, 2001, 405-409.
  16. Fišerová, H., Mikušová, Z., Klemš, M.: Estimation of ethylene production and 1-aminocyclopropane-1-carboxylic acid content in plants by means. Plant, Soil and Environment: Rostlinná výroba 54, 2008, 55-60. Go to original source...