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This study evaluates the phenolic content of red (Vranec and Merlo) and white (Smederevka and Chardonnay) wines produced under different vinifications and grapes at different ripening phases. HPLC-DAD-MS, MALDI-TOF-MS and spectrophotometry were used for analysis of phenolics (anthocyanins, hydroxycinnamic acids and proanthocyanidins) in the samples, observing that their content varied greatly with the winemaking conditions and ripening. The effect of pH of the sample and mobile phase on anthocyanin analysis was explored. Maximum flavylium response was obtained in the samples acidified to pH...

The theoretical characteristics of logistics and logistics systems are numerous, with specific characteristics, different implications and missions. Logistics activities in the wine industry are very important. Macedonia is a large exporter of wine. In terms of export value of agricultural products in Macedonia, wine is at the first place in terms of exports of alcoholic beverages, and at the second place immediately after the tobacco. The winemaking in Macedonia is continuously increasing, especially the last ten years. Besides the increased production, a special attention is paid to the...

Research Paper (postgraduate) from the year 2014 in the subject Food Technology, grade: 10, language: English, abstract: The purpose of this study was to introduce a new source of antioxidants obtained from grape pomace as well as aronia and blueberry and engages them in preparation of a new yoghurt product in order to be last - longer and more beneficial for human health than the traditional one. Totally, grape pomaces from 4 varieties (Zupjanka, Prokupec, Kadinal and Vranec), as well as blueberry and aronia, were used. For the extraction of polyphenolics, liquid-liquid extraction with...