Impact of the malting procedure on the quality of naked barley variety from the Agricultural institute of Osijek

Cilj rada bilo je ustanovljavanje utjecaja postupka slađenja na pokazatelje kakvoće sladova golozrnog ječma prema preporučenim vrijednostima za standardni svijetli slad. Ispitivan je utjecaj postupka slađenja na udjel topljivog N u sladu, odnos ukupnog N i topljivog N (Kolbachov index), Hartongov broj, ekstrakt, razliku fino/grubo meljave, boju, boju nakon kuhanja, pH, viskoznost i filtrabilnost sladovine i udjel b-glukana. Slađene su dvije sorte golozrnog ječma (Matko i GZ 184). Provedena su 4 postupaka slađenja i to: (A) standardni postupak (kontrola), te tri postupka sa snižavanjem temperature klijanja drugi i treći dan; (B) blago-intenzivni, (C) umjereno-intenzivni i (D) snažno –intenzivni postupak s naglim snižavanjem temperature klijanja nakon prvog dana, te stalnom temperaturom do kraja procesa. Na temelju dobivenih rezultata, te njihovom usporedbom s dostupnim podacima u znanstveno-stručnoj literaturi, procijenjena je uspješnosti određenog postupka mikroslađenja s obzirom na gore navedena preporučena svojstva.The aim of this research was to determine the influence of malting procedure on quality indicators of naked barley malt according to recommended properties for standard pale malt. The influence of four malting procedures on soluble N share in malt, total N and soluble N ratio (Kolbach index), Hartong number, extract, fine/coarse difference, colour, boiled wort colour, pH, viscosity and filterability of wort, and β-glucane was tested. Malted sample was two domestic naked barley varieties (Matko and GZ 184). Four malting procedures have been conducted: (A) standard procedure – control; (B) gently intensive procedure with uniform temperature increase during germination till the end of the process; (C) moderately intensive procedure with increase in germination temperature on the second and third day, and constant germination temperature till the end of the process; (D) procedure with sudden germination temperature decrease after the first day, and constant temperature till the end of the process. Based on obtained results, and their comparison to results in scientific and technical literature, the efficacy of certain micromalting procedure was evaluated, considering recommended properties of naked barley malt

Influence of malting procedure on the quality of hulless barley malt

This paper investigated the influence of malting procedure on quality indicators of hulless (naked) barley malt according to the recommended values for standard pale malt. The aim was to determine the optimal malting procedure in order to achieve the best results for investigated indicators in relation to the recommended values. Two domestic hulless barley varieties (Matko and GZ-184) were malted and four malting procedures were applied: (A) standard procedure – control; (B) gently intensive procedure with uniform temperature increase during germination till the end of the process; (C) moderately intensive procedure with the increase of germination temperature on the second and third day, and constant germination temperature till the end of the process; (D) procedure with sudden germination temperature decrease after the first day, and constant temperature till the end of the process. The influence of four malting procedures on soluble N content in malt, total N and soluble N ratio (Kolbach index), Hartong number, friability, extract, fine/coarse difference, colour, boiled wort colour, pH, viscosity and filterability of wort, and β-glucans were investigated. Based on obtained results, and their comparison to results reported in scientific and technical literature, the efficacy of each micromalting procedure was evaluated, considering recommended values for hulless barley malt. The results indicate that the resistance to deeper modification of grain (expressed as lower water absorption during soaking grains, and as weaker friability) are the main problem that will need to be solved in the further selection processes of domestic hulless barley varieties for malting. The intensification of the process of germination should be combined with the extension of soaking time, which should lead to improvements of friability of malt and better value for other indicators of malt quality

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements