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Assessment of Bioactive Profile of Sorghum Brans under the Effect of Growing Conditions and Nitrogen Fertilization

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  • Róbert Nagy

    (Institute of Nutrition, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Str., 4032 Debrecen, Hungary)

  • Eszter Murányi

    (Research Institute of Karcag, Hungarian University of Agriculture and Life Sciences, 2100 Gödöllő, Hungary)

  • Piroska Bíróné Molnár

    (Institute of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 1 Egyetem Square, 4032 Debrecen, Hungary)

  • Judit Szepesi

    (Institute of Nutrition, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Str., 4032 Debrecen, Hungary)

  • Zoltán Győri

    (Institute of Nutrition, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Str., 4032 Debrecen, Hungary)

  • Szilvia Veres

    (Department of Applied Plant Biology, Institute of Crop Sciences, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi, 4032 Debrecen, Hungary)

  • Judit Remenyik

    (Institute of Food Technology, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 1 Egyetem Square, 4032 Debrecen, Hungary)

  • Péter Sipos

    (Institute of Nutrition, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 138 Böszörményi Str., 4032 Debrecen, Hungary)

Abstract

Sorghum bicolor (L.) Moench is an increasingly important crop grown in many countries as a food source due to its excellent nutritional value, drought and pest resistance, and gluten-free properties. In this study, the bioactive profiles and antioxidant potentials of brans of six sorghum varieties were evaluated using spectrophotometric methods. The effects of weather and environmental conditions and different nitrogen nutrition were also evaluated. The bran of red varieties contained a higher amount of polyphenols and tannins and exhibited higher antioxidant capacities than the bran of white varieties, with the exception of one red genotype. The highest total polyphenol contents were measured in samples from two red varieties (Zádor, Alföldi1) with 1084.52 ± 57.92 mg 100 g −1 GAE and 1802.51 ± 121.13 mg 100 g −1 GAE values, respectively, while condensed tannin content varied between 0.50 mg g −1 and 47.79 mg g −1 in sorghum brans. Red varieties showed higher antioxidant activities/capacities with 70–281 µmol TE g −1 and 71–145 µmol TE g −1 for DPPH and TEAC. Correlation analysis showed a strong interaction between DPPH, TEAC, and the amounts of polyphenols and tannins, but not with FRAP values. In conclusion, red-colored varieties are a good source of polyphenols, but seed color alone is not enough to determine the nutritional value of a genotype, and the environmental conditions greatly affect the bioactive profile of sorghum.

Suggested Citation

  • Róbert Nagy & Eszter Murányi & Piroska Bíróné Molnár & Judit Szepesi & Zoltán Győri & Szilvia Veres & Judit Remenyik & Péter Sipos, 2023. "Assessment of Bioactive Profile of Sorghum Brans under the Effect of Growing Conditions and Nitrogen Fertilization," Agriculture, MDPI, vol. 13(4), pages 1-17, March.
    • Handle: RePEc:gam:jagris:v:13:y:2023:i:4:p:760-:d:1107258
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    References listed on IDEAS

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    2. Fabien Candau & Charles Regnacq & Julie Schlick, 2022. "Climate Change, Comparative Advantage and the Water Capability to Produce Agricultural Goods," Working Papers hal-03671521, HAL.
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