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    Harvesting time and roasting effects on colour properties, xanthophylls, phytates, tannins and vitamin C contents of orange maize hybrid

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    Journal Article (789.3Kb)
    Date
    2020
    Author
    Alamu, E.O.
    Maziya-Dixon, B.
    Menkir, A.
    Ogunlade, A.O.
    Olaofe, O.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Biofortified maize varieties form an essential part of a nutritious diet; available evidence suggests that different processing methods may affect the final food products. The study aimed to evaluate the effects of processing (roasting) and harvesting time on the bioactive components (lutein, zeaxanthin, β-cryptoxanthin, phytate, tannin and vitamin C) and colour properties (L*, a*, b*), of biofortified orange maize. The orange maize hybrids used for the study were obtained from the International Institute of Tropical Agriculture (IITA) diverse lines with high provitamin A (PVA) content. The results showed that harvesting time and roasting methods significantly (P ≤ 0.001) affected the colour properties. The positive values of ∆b* 30.7, 36.0 and 38.1 at 20 days after pollination (DAP), 27DAP and 34DAP, respectively showed that the intensity of orange colour increased with delay in harvesting time. In unprocessed freshly harvested orange hybrid maize; lutein, zeaxanthin, β-cryptoxanthin, tannin and vitamin C increased with an increase in harvesting time. For roasted hybrid, the mean concentrations of all the bioactive components increased with increases in harvesting time except for tannin and vitamin C that showed a decrease at 20DAP and 27DAP. The results revealed that processing and time of harvest affect the levels of non-provitamin A carotenoids, tannins, phytic acid, Vitamin C and the colour properties of biofortified maize genotypes.
    https://dx.doi.org/10.1038/s41598-020-78433-9
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7045
    IITA Authors ORCID
    Alamu Emmanuel Oladejihttps://orcid.org/0000-0001-6263-1359
    Busie Maziya-Dixonhttps://orcid.org/0000-0003-2014-2201
    Abebe Menkirhttps://orcid.org/0000-0002-5907-9177
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1038/s41598-020-78433-9
    Research Themes
    Biotech and Plant Breeding; Nutrition and Human Health
    IITA Subjects
    Agronomy; Biofortification; Food Security; Maize; Nutrition; Plant Production
    Agrovoc Terms
    Biofortification; Maize; Genotypes; Hybrids; Nutrition; Harvesting Date; Tannins; Vitamin Content
    Regions
    Africa; West Africa
    Countries
    Nigeria
    Hubs
    Southern Africa Hub; Headquarters and Western Africa Hub
    Journals
    Scientific Reports
    Collections
    • Journal and Journal Articles4835
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