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

Journal of Agricultural Science and Technology(B) 2016年第2期6卷 83-92页

作者： Rita Tomoskozi-Farkas Nora Adanyi Magdolna Gasztonyi-Nagy Maria Berki Viola Horvath tibor renkecz Kinga Simon Zoltan Fabulya Zsolt Polgar National Agricultural Research and Innovation Centre Food Science Research Institute Budapest H-1022 Hungary Research Group for Technical Analytical Chemistry Hungarian Academy of Sciences Budapest University of Technology andEconomics Budapest H-1111 Hungary Department of Inorganic and Analytical Chemistry Budapest University of Technology and Economics Budapest H-1111Hungary Department of Engineering University of Szeged Szeged H-6720 Hungary Potato Research Centre University ofPannonia Keszthely H-8360 Hungary

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 fanning on the total amount of anti-nutritive components, vitamins or micro- and macro-elements of potato tubers could be proven.

关键词： Potato organic farming conventional fanning metabolomics macro- and micro-elements.

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