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    Phenolic profile and content of sorghum grains under different irrigation managements

    252271.pdf (1.371Mb)
    Access Status
    Open access
    Authors
    Wu, G.
    Bennett, Sarita
    Bornman, J.
    Clarke, M.
    Fang, Z.
    Johnson, Stuart
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Wu, G. and Bennett, S. and Bornman, J. and Clarke, M. and Fang, Z. and Johnson, S. 2017. Phenolic profile and content of sorghum grains under different irrigation managements. Food Research International. 97: pp. 347-355.
    Source Title
    Food Research International
    DOI
    10.1016/j.foodres.2017.04.030
    ISSN
    0963-9969
    School
    Department of Environment and Agriculture
    URI
    http://hdl.handle.net/20.500.11937/53661
    Collection
    • Curtin Research Publications
    Abstract

    Sorghum grain is widely consumed in Sub-Saharan Africa and Asia, as a staple food due to its adaptation to harsh environments. The impact of irrigation regime: full irrigation (100%); deficit irrigation (50%); and severe deficit irrigation (25%) on phenolic profile and content of six sorghum grain genotypes was investigated by high performance liquid chromatography coupled with diode array detection and electrospray ionization mass spectrometry (HPLC-DAD-ESI-MS). A total of 25 individual polyphenols were unequivocally or tentatively identified. Compared to the colored-grain genotypes, the white grained sorghum var. Liberty had a simpler polyphenol profile. The concentrations of the sorghum-specific 3-deoxyanthocyanidins luteolinidin and apigeninidin, were higher under deficit irrigation compared to the other two regimes in all genotypes. These findings will be valuable for the selection of sorghum genotypes for grain production as human food under water deficit conditions, since polyphenol levels can affect the grain's nutritional value and health properties.

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