The evaluation of selected qualitative parameters of sweet potato (Ipomoea batatas L.) in dependence on its cultivar

Authors

  • Miroslav Šlosár Department of Vegetable Production, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2, 949 76 Nitra https://orcid.org/0000-0001-8692-405X
  • Alžbeta Hegedűsová Department of Vegetable Production, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture in Nitra
  • Ondrej Hegedűs J. Selye University, Faculty of Economics Department of Management Bratislavská str. 3322 945 01 Komárno
  • Ivana Mezeyová Department of Vegetable Production, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2 https://orcid.org/0000-0001-5405-5611
  • Ján Farkaš Department of Vegetable Production, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2
  • Marcel Golian Department of Vegetable Production, Faculty of Horticulture and Landscape Engineering, Slovak University of Agriculture in Nitra, Tr. A. Hlinku 2 https://orcid.org/0000-0001-7266-7099

DOI:

https://doi.org/10.5219/1036

Keywords:

sweet potato, quality, carotenoids, vitamin C, total soluble solids

Abstract

The sweet potato (Ipomoea batatas L.) is relatively known vegetable species, but it is grown only on small area in the Middle European region. Its cultivars are characterized by different colour of tuber flesh which can be white, beige, yellow, orange and purple. The aim of this study was to determine and compare selected qualitative parameters of tubers (total carotenoids, vitamin C and total soluble solids) among orange, white and purple sweet potato cultivars. The field experiments were established at Slovak University of Agriculture in Nitra in 2016 and 2017. Sweet potatoes were grown by hillock system with using of black non-woven textile for soil mulching. The tuber harvest was realised on the 6th October 2016 and 13rd September 2017. The highest content of total carotenoids was found in orange sweet potato cultivars (78.47 - 122.89 mg.kg-1 fresh weight) and its values were multiple-fold higher in comparison with purple (4.22 mg.kg-1 f. w.) and white (10.71 mg.kg-1 f. w.) cultivars. Orange cultivars were also richer source of vitamin C (246.31 - 325.99 mg.kg-1 f. w.) compared to white (179.66 mg.kg-1 f. w.) and purple (187.75 mg.kg-1 f. w.) cultivars of sweet potatoes. The total soluble solids, expressing mainly sugar content, was higher in purple (10.13 °BRIX) cultivar of sweet potatoes, followed by cultivars with orange (8.52 - 9.72 °BRIX) and white (5.57 °BRIX) tuber flesh. Obtained results showed the significant effect of cultivar, characterized by different tuber flesh colour, on the composition and contribution of sweet potatoes for human health. 

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Published

2019-02-23

How to Cite

Šlosár, M. ., Hegedűsová, A. ., Hegedűs, O. ., Mezeyová, I. ., Farkaš, J. ., & Golian, M. . (2019). The evaluation of selected qualitative parameters of sweet potato (Ipomoea batatas L.) in dependence on its cultivar. Potravinarstvo Slovak Journal of Food Sciences, 13(1), 131–137. https://doi.org/10.5219/1036

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