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Antioxidant activity, S-alk(en)yl-l-cysteine sulfoxide and polyphenol content in onion (Allium cepa L.) cultivars are associated with their genetic background

Author

Listed:
  • Katarína Mitrová

    (Crop Research Institute, Prague, Czech Republic)

  • Vojtěch Hrbek

    (Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic)

  • Pavel Svoboda

    (Crop Research Institute, Prague, Czech Republic)

  • Jana Hajšlová

    (Department of Food Analysis and Nutrition, Faculty of Food and Biochemical Technology, University of Chemistry and Technology Prague, Prague, Czech Republic)

  • Jaroslava Ovesná

    (Crop Research Institute, Prague, Czech Republic)

Abstract

Six onion cultivars Bingo, Dormo, Elenka, Elbrus, Spirit, and Sturon grown in the Czech Republic for commercial purposes were analysed to investigate the content of health-promoting compounds. The results showed that at harvest time, cysteine sulfoxide content varied from 32.38 to 44.16 g/kg of dry weight, polyphenol content was between 2.66 and 3.37 g/kg of dry weight, and antioxidant activity ranged from 0.75 to 0.83 g/kg. Cv. Bingo had the highest level of the analysed compounds. The cultivars were concurrently analysed by DNA (microsatellite) markers. Dendrograms based on the chemical composition and DNA analysis were almost identical. This finding confirms the dependence of the secondary metabolite content on onion genotype.

Suggested Citation

  • Katarína Mitrová & Vojtěch Hrbek & Pavel Svoboda & Jana Hajšlová & Jaroslava Ovesná, 2016. "Antioxidant activity, S-alk(en)yl-l-cysteine sulfoxide and polyphenol content in onion (Allium cepa L.) cultivars are associated with their genetic background," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 34(2), pages 127-132.
    • Handle: RePEc:caa:jnlcjf:v:34:y:2016:i:2:id:268-2015-cjfs
    DOI: 10.17221/268/2015-CJFS
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