Faculty of Biotechnology and Food Sciences in Nitra Journal of Microbiology, Biotechnology and Food Sciences 1338-5178 special issue 3 (Food Sciences) vol. 4 2015-02-02 2015-02-02 THE CONTENT OF POLYPHENOLS IN FRUIT OF HIGHBUSH BLUEBERRY (VACCINIUM CORYMBOSUM L.) RELATING TO DIFFERENT FERTILIZER APPLICATION 109 113 EN Michal Medvecký Michal Medvecký Ján Daniel Ján Daniel Alena Vollmannová Alena Vollmannová Stanislav Zupka Stanislav Zupka Miriama Kopernická Miriama Kopernická Six varieties of high blueberries (Vaccinium corymbosum L.) grown on a plantation of research station in Krivá, that is located in the northern part of Slovakia, was examined to determine the content of polyphenols in the fruit depending on the three variants of fertilization. The first variant was realized with the application of organic fertilization, second one with mineral fertilizers and third variant was left without fertilization. The content of total polyphenols (TP) was determined spectrophotometrically using Folin-Ciocalteau reagent. The total polyphenol content ranged from 2522.90 mg.kg-1 to 4960.20 mg.kg-1 in the variant with organic fertilization. In the variant with mineral fertilization the total polyphenol content ranged from 2278.25 mg.kg-1 to 3350.23 mg.kg-1. In the variant without fertilization was concentration of total polyphenols from 2503.63 mg.kg-1 to 3790.48 mg.kg-1. Statistical evaluation of the results confirmed a very weak correlation between polyphenols and one variety of different fertilization on the level of significance (p <0.05). Statistically significant effect on the level of significance (p <0.05) in Tukey's test was confirmed at the Patriot variety of organic and mineral fertilization and the mineral fertilization and control variant.
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