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Phenolic acids in kernels of different coloured-grain wheat genotypes

Author

Listed:
  • Luboš Paznocht

    (Department of Chemistry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Zora Kotíková

    (Department of Chemistry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Barbora Burešová

    (Department of Chemistry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Jaromír Lachman

    (Department of Chemistry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences Prague, Prague, Czech Republic)

  • Petr Martinek

    (Agrotest fyto, Ltd., Kroměříž, Czech Republic)

Abstract

The content of free, conjugated and bound phenolic acids in 12 wheat (Triticum aestivum L.) genotypes of 4 different grain colours (standard red, yellow endosperm, purple pericarp and blue aleurone) from 2-year field trial was analysed in the present study. Significant increase (8%) in the total phenolic acid content was observed in the dryer year 2017. Five phenolic acids (ferulic, sinapic, p-coumaric, vanillic and 4-hydroxybenzoic) and cis-isomers of ferulic and sinapic acid were determined by HPLC-DAD (high-performance liquid chromatography with a diode-array detector) in grain samples. The total phenolic acid content of coloured wheat groups varied: blue aleurone > purple pericarp > yellow endosperm > red colour (798 > 702 > 693 > 599 µg/g). The fraction of bound phenolic acids was the major contributor to the total phenolic acid content (91.7%) with ferulic acid predominating (85.2%). Conjugated phenolic acids accounted for 7.9% of the total with sinapic and ferulic acid predominating (47.6% and 19.9%). The composition of individual phenolic acids was similar within these two fractions. The remaining 0.4% was represented by the fraction of free phenolic acids in which the phenolic acid profile varied among the individual coloured groups. Ferulic acid prevailed in red and yellow wheats, vanillic in blue and p-coumaric in purple wheats.

Suggested Citation

  • Luboš Paznocht & Zora Kotíková & Barbora Burešová & Jaromír Lachman & Petr Martinek, 2020. "Phenolic acids in kernels of different coloured-grain wheat genotypes," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(2), pages 57-64.
    • Handle: RePEc:caa:jnlpse:v:66:y:2020:i:2:id:380-2019-pse
    DOI: 10.17221/380/2019-PSE
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    References listed on IDEAS

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    1. Monika Zrcková & Ivana Capouchová & Luboš Paznocht & Marie Eliášová & Petr Dvořák & Petr Konvalina & Dagmar Janovská & Matyáš Orsák & Lucie Bečková, 2019. "Variation of the total content of polyphenols and phenolic acids in einkorn, emmer, spelt and common wheat grain as a function of genotype, wheat species and crop year," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 65(5), pages 260-266.
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    Cited by:

    1. Ivana Capouchová & Barbora Burešová & Luboš Paznocht & Marie Eliášová & Kateřina Pazderů & Petr Konvalina & Matěj Satranský & Václav Dvořáček, 2020. "Antioxidant activity and content of selected antioxidant compounds in grain of different oat cultivars," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 66(7), pages 327-333.

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