o:1521 Optimizacija mikrotalasne ekstrakcije polifenolnih jedinjenja iz ploda aronije (Aronia melanocarpa L.) Optimization of microwave-assisted extraction of polyphenolic compounds from chokeberries (Aronia melanocarpa L.) : doctoral dissertation sr Aronia (Aronia melanocarpa) is one of the richest plant sources of polyphenols, mainly anthocyanins that provide a high antioxidant activity. In order to find extraction technique and conditions that will allow obtaining chokeberry extract with the maximum content of polyphenolic compounds, the microwave assisted extraction under different conditions (microwave power, ethanol concentration and extraction time) could be applied. Statistical methods (response surface methodology and artificial neural network with genetic algorithm) estimate the individual and combned effect of process parameters and proposed the optimal and most cost-effective extraction conditions which provide the highest possible content of polyphenolic compounds and antioxidant activity. The formulation of cookies based on wheat and buckwheat flour with the addition of fresh chokeberry fruits, juice or aronia extract obtained under optimum conditions leads to an improvement of conventional recipes and production of functional bakery products. Bibliografija: str. 181-223. Datum odbrane: 27.09.2018. Food engineering 534015382 91552101 6358 91552100 534015382 2018-12-17T17:46:32.053Z 45 no 46 mentor Valentina M. 1970- Simić 2018 63 mentor Ivana 1976- Karabegović 2018 63 član komisije Miodrag 1955- Lazić 2018 63 član komisije Nada 1964- Nikolić 2018 239 str. 7346635 http://phaidrabg.bg.ac.rs/o:1521 no yes 4 2018-12-17T17:46:32.320Z 70 Mikrotalasna ekstrakcija, aronija, polifenolna jedinjenja, optimizacija, metoda odzivnih površina, veštačke neuronske mreže, keks sa dodatom vrednošću microwave extraction, chokeberry, polyphenolic compounds, optimization, response surface methodology, artificial neural network, biscuits with enhanced value 665.52.061:582.711.71(043.3) T430 1738 18A08 18A0804 2018