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The results of investigation of the tannin content in the oak acorn kernel Quercus cerris, qualitative analysis of tannin and antioxidation effect of ethanol extracts of acorn on porcine lipid (prime steam lard) as a substrate are presented in this paper. Experiments were carried out on kernel samples of the domestic oak acorn, from the location Zaglavak, near by the town of Bajina Bašta. Tannin content was determined by spectrophotometric procedure using phosphorus Wolframic acid on wave length of 715 nm. Qualitative analysis of tannin included sediment and stain responses as well as tannoform test with formalaldehyde and HCl. Antioxidant effect of ethanol extracts was investigated on fat samples treated at the temperature of 600C in the dark (Schaaloven test). The rate of oxidation was determined by measuring Peroxide value (Pb) and TBA value. The investigated extracts were obtained based on drying of acorn kernel and extracts based on thermal treatment - dry frying of acorn kernel. The obtained results show that dried acorn kernel contains 11.69 % of tannin and thermally treated acorn kernel 8.55%. Qualitative analysis confirmed the presence of gallic acid (pyrogallic, hydrolysing) tannins based on positive general sediment and stain responses on tannins. Ethanol extracts demonstrate antioxidation traits on porcine lipids in trial conditions. Synergistic effect of citric acid with primary anti oxidant was not proved. Thermal treatment of acorn kernel does not reduce the antioxidation activity of extracts

SUMMARYSpelt [Triticum spelta (L.)] is a wheat species that is becoming increasingly popular in the production of safe food, and also due to rising possibilities for ecological farming of this alternative crop. Two-year research on possibilities of growing spelt was carried out during 2011 and 2012, on the experimental field of the Institute of Agriculture in Banja Luka (Republic of Srpska). The subject-matter of the research was two spelt cultivars: Hungarian cultivar Ekö-10 and Serbian Novi Sad cultivar Nirvana. The trials were set up in the form of a randomised block design with three repetitions. The trials investigated the following morphological and productive traits: plant height, spike length and 1000-grain weight. The results show that the cultivars have a large genetic potential. Statistically, Nirvana had significantly higher plants (150.66 cm), longer spikes (8.37 cm) and higher1000-grain weight (46.39 g) than cultivar Ekö-10 that had lower values in the both years of research. Identifying correlations enabled better understanding of interrelations among the traits and their balancing, in order to increase yield per unit area. The conditions of the trial site were proved favourable for growing spelt.

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