The changes of the polyphenol content and antioxidant activity in potato tubers (Solanum tuberosum L.) due to nitrogen fertilization


  • Janette Musilová Department of Chemistry, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra
  • Jaromí­r Lachman Department of Chemistry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague
  • Judita Bystrická Department of Chemistry, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra
  • Zuzana Poláková Department of Statistics and Operation Research, Faculty of Economics and Management, Slovak University of Agriculture in Nitra
  • Peter Kováčik Department of Agrochemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Slovak University of Agriculture in Nitra
  • Diana Hrabovská Department of Chemistry, Faculty of Biotechnology and Food Sciences, Slovak University of Agriculture in Nitra



potato, polyphenol, antioxidant activity, nitrogen fertilization


Cultivar is one of the most important internal factors affecting polyphenol concentration in the plants. However, influence of the grown locality, climate conditions and way of cultivation belong to important external factors. In our experiment the influence of different nitrogen doses (0 - 40 - 80 - 120 - 160 - 240 kg N.ha-1) applied in the form of Vermikompost on the total polyphenol content and derived total antioxidant activity in cv. Sorento were investigated. While in the 1st - 5th variants the determined polyphenol content in dry mater of potato tubers decreased from 399.2 to 70.40, in the 6th variant that was twice higher in comparison to the 5th variants (135.6 The statistically significant differences in values of total polyphenol content between variants (polynomial function of 2nd degree) were confirmed. The study also confirmed a strong statistical correlation between the content of polyphenols and the content of antioxidant activity has been confirmed
(sign. F: 3.24E-10). The highest value of antioxidant activity was observed in the first variant. From the first to the fifth variant (7.62 - 4.84%), the value of antioxidant activity was decreasing and in the sixth variant this value increased to 6.31%.


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How to Cite

Musilová, J. ., Lachman, J. ., Bystrická, J. ., Poláková, Z. ., Kováčik, P. ., & Hrabovská, D. . (2013). The changes of the polyphenol content and antioxidant activity in potato tubers (Solanum tuberosum L.) due to nitrogen fertilization. Potravinarstvo Slovak Journal of Food Sciences, 7(1), 164–170.

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