Динамика основных биохимических элементов в клубнях картофеля в процессе хранения
2014
Завадская, О. (National University of Bioresources and Environmental Management of Ukraine, Kyiv (Ukraine) | Ковтун, А.
Nutritional and biological value of potato tubers is determined by the content of basic biochemicalcomponents, and primarily – dry matter, carbohydrates, proteins, vitamins, etc. The amount of biologicallyvaluable components also determines the suitability of tubers for processing or for long-term storage and itdepends very much on the varietal characteristics. In this study, different potato varieties grown in the conditionsof southern Polissya of Ukraine, were investigated according to their biochemical and organoleptic indicesbefore and after the long-term storage. Six potato varieties were used in the experiment, and namely: threevarieties of German origin (Adretta, Bellarosa, Vineta), two domestic varieties (Svitanok kyivs’kui, Borodyans’karozheva) and one Dutch variety (Condor). The highest nutritive and biological value after six months of storagewas recorded by the tubers of the varieties Svitanok kyivs’kui (control variant) and Vineta. A high content ofstarch (18.6 and 17.2%, respectively) and ascorbic acid (15.5 and 15.6 mg%, respectively) was maintained in thesetwo varieties. A close direct correlation between the starch content and taste of boiled tubers was established. Asa result of the correlation analysis it was revealed that the sugar content in potato tubers significantly affect theirsusceptibility to rotting (r = 0,84 ± 0,11). After six months of storage, the tubers of Vineta variety received thehighest score for the complex of organoleptic characteristics. Consequently, for long-term storage, it is moreadvisable to grow the potato varieties Vineta and Svitanokkyivs’kui.
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