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Article

Open Access

Changes of Metabolites and Macro- and Micro-elements in Hungarian Potatoes under Organic and Conventional Farming

Author(s)

Rita Tömösközi-Farkas¹, Nóra Adányi¹, Magdolna Gasztonyi-Nagy¹, Mária Berki¹, Viola Horváth², Tibor Renkecz³, Kinga Simon³, Zoltán Fabulya⁴ and Zsolt Polgár⁵

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DOI:10.17265/2161-6264/2016.02.004

Affiliation(s)

1. National Agricultural Research and Innovation Centre, Food Science Research Institute, Budapest H-1022, Hungary
2. Research Group for Technical Analytical Chemistry, Hungarian Academy of Sciences, Budapest University of Technology and Economics, Budapest H-1111, Hungary
3. Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Budapest H-1111, Hungary
4. Department of Engineering, University of Szeged, Szeged H-6720, Hungary
5. Potato Research Centre, University of Pannonia, Keszthely H-8360, Hungary

ABSTRACT

To study the effect of cultivation system (conventional and organic) on potato tuber components, 42 parameters (anti-nutritives, micro- and macro-elements and 23 metabolites) were studied in three multi-resistant Hungarian potato varieties for three years in 2007-2009. Discriminant analysis of data proved that all investigated factors (farming technology, genotype and season/year) had significant effect on metabolites. Reversed phase high performance liquid chromatographic (HPLC-DAD, HPLC-MS) and elemental analysis methods have been adapted to quantify the major components, i.e., steroidal alkaloids, nitrite, nitrate, sugars, amino acids and micro-elements, in potato tubers. The absolute amount and changes of tuber components were influenced differentially by the technology, genotype and season in a complex manner. Any examined component, except nitrate content, was found to be significantly higher or lower consistently in relation to the production practice (organic or conventional) during the three years trials. Under the examined circumstances, no consequent positive effect of organic farming on the total amount of anti-nutritive components, vitamins or micro- and macro-elements of potato tubers could be proven.

KEYWORDS

Potato, organic farming, conventional farming, metabolomics, macro- and micro-elements.

Cite this paper

References

Changes of Metabolites and Macro- and Micro-elements in Hungarian Potatoes under Organic and Conventional Farming

Rita Tömösközi-Farkas1, Nóra Adányi1, Magdolna Gasztonyi-Nagy1, Mária Berki1, Viola Horváth2, Tibor Renkecz3, Kinga Simon3, Zoltán Fabulya4 and Zsolt Polgár5

Rita Tömösközi-Farkas¹, Nóra Adányi¹, Magdolna Gasztonyi-Nagy¹, Mária Berki¹, Viola Horváth², Tibor Renkecz³, Kinga Simon³, Zoltán Fabulya⁴ and Zsolt Polgár⁵