Evolution of the Polyphenolic Content of Moravian White Grape Variety Wines of Different Vintages During Storage

Wine is known as a source of bioactive compounds and is one of the alcoholic beverages with the highestphenolic content. There has been growing interest in the composition of wine due to its beneficial propertiesfor human health. This work focuses on biologically active and sensory attributes of white wine and presentsresearch on wine chemical profiles in relation to their geographical origin, varieties and storage. The aimof this study was to investigate the phenolic compound evolution of 35 selected white wine varieties fromthe Moravian region in the Czech Republic. To separate and identify individual phenolic compounds in the wines, the high-performance liquid chromatographic method was used. A spectrophotometric methodwas applied for the determination of total polyphenol and total flavonoid content. This research presentsresults for the total benzoic and cinnamic acid derivatives, flavonols, flavanols and stilbene content ofMoravian white grape varieties. Differences were found in the content of these compounds, and the resultsshow that the phenolic concentrations depend on grape variety and storage time

Electrode Movement Prevention - an Animal Model

Electrode migration is the most common complication of spinal cord stimulation (SCS). The problem of longitudinal migration has already been solved, but lateral migration remains the most common current complication. The present article describes new electrodes fixation opportunities for the reduction of lateral migration in SCS. The pig was chosen as an animal model to illustrate a new protocol of electrode fixation for the control of lateral and longitudinal migration. The displacement of the electrode was measured using two different optical methods: the digital image stereo-correlation and the digital image processing methods. Fixation with two anchors has always considerably reduced electrode displacement and when fixation is done with two anchors and a loop then lateral migration is reduced by 62.5 % and longitudinal migration is reduced by 94.1 %. It was shown that the results are significantly different at the a=0.001 significance level. Based on a statistical evaluation it is possible to state that the differences between experimental results obtained for three different protocols of lead fixation are statistically significant and we can recommend the new fixation method for common practice

Selected nutritional values of field cricket (<em>Gryllus assimilis</em>) and its possible use as a human food

518-524The nutritional values of the field cricket (Gryllus assimilis (Fabricius, 1775)) were analysed for dry matter using infrared scales, crude protein using Kjeldahl method, fat by Soxhlet method and fatty acid composition using GC-MS. The average dry matter content of analysed insect was 22.6 %, content of crude protein was 55.6 %, fat content was 11.8 %. The analysis of the fatty acid profile shows that the most abundant fatty acids were C18:2, C16:0 and C18:1 and the atherogenic index was 0.55. Microbial analyses were also part of the research, with evaluation of the total content of bacteria (3.3.106 CFU g-1), coli form bacteria (3.5.104 CFU g-1) and lactic acid bacteria (5.8.106 CFU g‑1) and of yeasts and moulds (4.4.105 CFU g‑1). For the high content of lipids and proteins edible insects could be a good alternative future source of crude protein and fat. EFSA also deals with obtaining sufficient data about the nutritional value and safety of consuming edible insects