This diploma thesis deals with the analysis of low molecular weight proteins in barley during malting by SDS-PAGE method. Attention was paid to PR proteins, specifically LTP proteins and thionins, considered to be connected with gushing effect. Barley samples, malt intermediates and malt samples taken in 10 consecutive days to cover the whole malting process were used for the experiment. In total, 5 samplings were used for the analysis. Proteins extracted from the samples were separated by SDS-PAGE using a Tris-tricine buffer system. The protein lines of LTP proteins and thionins were identified in the resulting gels. The relative optical density values of the selected protein bands were obtained to assess the effect of malting on these proteins. A similar pattern of change in the content of mentioned low molecular weight proteins during the malting process was observed. This was confirmed by finding a statistically significant positive correlation between the relative optical density values of LTP proteins and thionins. Furthermore, the relationship between the low molecular weight protein content and the gushing potential and the microbiological contamination of the samples was investigated, but was not confirmed.
| Identifer | oai:union.ndltd.org:nusl.cz/oai:invenio.nusl.cz:295713 |
| Date | January 2017 |
| Creators | Myslivcová, Pavla |
| Contributors | Svoboda, Zdeněk, Mikulíková, Renata |
| Publisher | Vysoké učení technické v Brně. Fakulta chemická |
| Source Sets | Czech ETDs |
| Language | Czech |
| Detected Language | English |
| Type | info:eu-repo/semantics/masterThesis |
| Rights | info:eu-repo/semantics/restrictedAccess |
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