Malting quality indicators of Croatian dual-purpose barley varieties

Malting barley varieties usually demand higher expences than feed varieties, at least as far as management practice is concerned. For this reason, many growers in Croatia search for a quality replacement of malting varieties. Croatian market allows dual-purpose varieties, but strict quality parameters have to be met in order for a variety to be recognized as a malting/feed variety. The aim of this research was to preliminary assess the malting quality of several malting, feed and multipurpose (dual or combined) malting/feed barley varieties. 11 barley varieties were grown in Osijek area during 2011: seven malting/feed (M/F), two malting (M) and two feed barley varieties (F). The suitability for the beer production was assessed according to the malting quality indicators, determined by using standard methods of analytica EBC (European Brewing Convention). As expected, both malting varieties (Vanessa and Tiffany) demonstrated the best malting quality parameters. Most of the combined malting/feed varieties were within recommended values, except Maxim, Lukas and Gazda, which showed the lowest results in friability. Considering that the results were collected and evaluated over a period of one year, this study was taken as a good pointer to future, longer lasting investigations

UČINAK SELEKCIJE SNIŽENJA STABLJIKE NA UROD I KOMPONENTE URODA ZRNA JEČMA

This investigation deals with the effects of selection for short stem in population lines of the F4 generation derived from the barley cross between Timura x Osk. 4.208´2-84 developed by the single seed descent and pedigree method. Direct genetic gain from reducing the stem length was found to be 10.22 % at dense planting (400 kernels/m2) and 11.47 % at wide-spaced planting (100 kernels/m2). It was found that stem length had relatively high heritability (0.643 and 0.735). Large negative effects of reducing the stem length at wide-spaced and dense planting were estimated for the grain yield per plant, grain yield per plot and number of fertile tillers. Less pronounced negative effects were found for the grain weight per spike and grain number per spike. Phenotypic and genotypic correlations between stem length and other traits were mostly significant and positive with higher values at dense planting. Selection for a short stem length was efficient for the improvement of this trait. However, unfavorable correlations have significantly affected undesired expression of other traits, especially grain yield per plant, grain yield per plot and number of fertile tillers. Any further decrease of plant height should be accompanied by the appropriate selection for other traits, especially grain yield per plant, mass of one grain and harvest index.U radu su istraženi učinci selekcije na kraću stabljiku kod ječma u populaciji linija F4 generacije izvedene iz kombinacije križanja Timura x Osk.4.208´2-84 pomoću metode potomstva sjemenke po biljci (SSD) i pedigree metode. Ostvarena izravna genetska dobit sniženja stabljike bila je 10,22 % u gustoj sjetvi (400 zrna/m2 ) i 11,47 % u rijetkoj sjetvi (100 zrna/m2 ). Utvrđeno je da je dužina stabljike svojstvo relativno visokog heritabiliteta (0,643 i 0,735). Jaki negativni učinci sniženja dužine stabljike u rijetkoj i gustoj sjetvi procijenjeni su za urod zrna po biljci, urod zrna po parceli i broj plodnih vlati. Manje naglašeni negativni učinci utvrđeni su za masu zrna po klasu i broj zrna po klasu. Fenotipske i genotipske korelacije između dužine stabljike i drugih svojstava bile su uglavnom značajne i pozitivne s višim vrijednostima u gustoj sjetvi. Selekcija na skraćenje stabljike bila je učinkovita za poboljšanje toga svojstva. Međutim, nepovoljne korelacije značajno su utjecale na neželjenu ekspresiju drugih svojstava, naročito na urod zrna po biljci, urod zrna po parceli i broj plodnih vlati. Daljnje snižavanje visine stabljike trebalo bi biti praćeno i odgovarajućom selekcijom na druga svojstva, posebno urod zrna po biljci, masu zrna i žetveni indeks

GRAIN YIELD AND BREWING QUALITY OF BARLEY IN THE REPUBLIC OF CROATIA

Provedeno je istraživanje o proizvodnji ozimog i jarog ječma u suodnosu s pivarskom kakvoćom i urodom zrna u Republici Hrvatskoj u razdoblju od 1970. do 2002. godine. Analizom uroda zrna na temelju pokusa na Poljoprivrednom institutu Osijek, sorata koje su bile najzastupljenije u pojedinim petogodišnjim razdobljima u širokoj proizvodnji ustanovili smo povećanje uroda zrna od 94 kg/ha/godini kod ozimog ječma i 26 kg/ha/godini kod jarog ječma. Analiza pivarske kakvoće slada u Republici Hrvatskoj u razdoblju od 1999. do 2002. godine pokazuje da je ukupno ostvaren sadržaj ekstrakta od 79.19%, razlika ekstrakta od 2.49%, uz maseni udio bjelančevina u sladu od 12.53%, te Kolbach indeks od 41.12%, Hartongov broj od 42.36%, viskozitet cp 8.6 od 1.549 mPas i dijastatska snaga od 309 U.WK. Uspoređujući kakvoću slada sorti ozimog i jarog ječma, uočavamo da su u prosjeku sorte jarog ječma u odnosu na ozime imale viši i nepovoljniji sadržaj bjelančevina u sladu, ali povoljniji niži viskozitet i veću dijastatsku snagu slada. U proizvodnji ozimog ječma u istraživanom razdoblju najznačajnije sorte bile su Mursa, Alpha, Pan, Robur, Sladoran, Plaisant, Rex, Zlatko, Angora, Lord i Barun. U proizvodnji jarog ječma u istraživanom razdoblju najznačajnije sorte bile su Union, Velebit, Berenice, Jaran, Gimpel, Astor, Scarlett.The investigation into winter and spring barley production in correlation with the brewing quality and yield of grains in the Republic of Croatia from 1970 to 2002 was carried out. The regression analysis of yield of kernels using the data from the State Institute for Statistics, Croatia, shows for this period the annual yield increase by 52 kg/hectare. The yield analysis from the trials at the Osijek Institute of Agriculture with the prevailing varieties in specific five-year periods in the large scale production, an annual increase by 94 kg/hectare/year in winter barley and by 26 kg/hectare in spring barley was found. The quality analysis in the Republic of Croatia of the period from 1970 to 2002 showed that, in total, the extract content was 79.19%, the extract difference 2.49%, mass portion of proteins in malt 12.53%, Kolbach index 41.12%, Hartong 42.36%, viscosity cp 8.6 1.549 mPas and diastatic power 309 U.WK. When comparing the malt quality in winter and spring barley varieties it was noticed that on average the spring barley varieties vs. the winter barley varieties had a higher and more unfavorable protein content in malt, but lower viscosity and greater diastatic malt power. In production of winter barley and in investigated thirty year period the most important varieties were Mursa, Alpha, Pan, Robur, Sladoran, Plaisant, Rex, Angora, Zlatko, Lord, Barun and in production of spring barley varieties Union, Velebit, Berenice, Jaran, Gimpel, Astor, Scarlett

New ruthenium(II) bipyridyl complex : synthesis, crystal structure and cytotoxicity

A new Ru(II) bipyridyl complex with O-4-hydrogenpyridine-2,4-dicarboxylate was synthesized and characterized by IR, NMR and mass spectrometry, X-ray diffraction analysis and elemental analysis. The electrochemical characteristics of the complex were investigated by cyclic voltammetry, revealing Ru(II)/Ru(III) electron transfer in the positive range of potentials. On the opposite potential side, multiple partially reversible peaks were dominant, representing subsequent reductions of the bulky bipyridyl moiety. The cytotoxic activity of the complex was tested in two human cancer cell lines: A549 (lung cancer) and K562 (leukemia) as well as non-tumor MRC-5 cells, by MTT assays. The IC50 values were >300 and 177.63+/-2.28 mu M for the A549 and K562 cells, respectively

β-glucan content and β-glucanase activity of winter and spring malting barley cultivars

β-Glucan content and β-glucanase activity of winter and spring barley cultivars grown under different environments were evaluated. There were significant differences in both β-glucan content and β-glucanase activity between analysed barleys. The results showed that, for all cultivars and locations, approximately 75% of β-glucan present in grains was degraded after malting, and that marked differences existed among winter and spring type of cultivars in malt β-glucan content. The correlation analysis of β-glucan content and malt quality parameters showed that malt β-glucan content was significantly positively correlated with viscosity and extract difference, and negatively with malt β-glucanase activity and friability. Regarding malt β-glucanase activity, significantly higher activity was found in spring cultivars in contrast to winter cultivars

Origin of Middle-Infrared Peaks in Cerium Compounds

We have demonstrated that the middle-infrared (mid-IR) peaks in the optical conductivity spectra of Ce$X_3$ ($X$ = Pd, Sn, In) can be explained by first-principle band structure calculation with the spin-orbit interaction. The mid-IR peak shapes in these materials are not identical to one another: CePd$_3$, CeSn$_3$, and CeIn$_3$ have a triple-peak structure, double-peak structure and broad single-peak structure, respectively. These peaks can be theoretically explained by the optical transition from the occupied state to the spin-orbit splitted Ce $4f$ state. This result indicates that the mid-IR peaks originate from the simple band picture with the Ce $4f$ state near the Fermi level, not from the conventional cf hybridization gap based on the periodic Anderson model.Comment: 5 pages, 6 figures. To be published in J. Phys. Soc. Jpn. 78(1) (2009

Supplementary data for article: Baroud, A. A.; Mihajlović-Lalić, L. E.; Gligorijević, N.; Aranđelović, S.; Stanković, D.; Radulović, S.; Van Hecke, K.; Savić, A.; Grgurić-Šipka, S. Ruthenium(II) Bipyridine Complexes: From Synthesis and Crystal Structures to Electrochemical and Cytotoxicity Investigation. Journal of Coordination Chemistry 2017, 70 (5), 831–847. https://doi.org/10.1080/00958972.2017.1282611

Supplementary material for: [https://doi.org/10.1080/00958972.2017.1282611]Related to accepted version: [http://cherry.chem.bg.ac.rs/handle/123456789/2423