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    Variation in the evaluation of cis- and trans-<beta>-carotene in yellow-fleshed cassava (Manihot esculenta Cranz) varieties as a function of the storage root portion and sampling method

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    Date
    2016-07
    Author
    Maziya-Dixon, A.
    Alamu, E.O.
    Dixon, A.
    Type
    Journal Article
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Providing correct estimates of the carotenoid content of cassava varieties is very important in any cassava-breeding program for improving vitamin A intakes in sub-Saharan Africa especially among high-risk groups. The effect of different sampling methods-sampling with cork-borer(SPM1) and sampling without cork-borer (SPM2)-on cis- and trans-β-carotene in yellow-fleshed storage roots of cassava was investigated with 40 elite cassava varieties (comprises of 2 trials), grown in 2004/2005 growing season in replicated field trials (Randomized Complete Block Design) and harvested at 12 months after planting. The cis- and trans- isomers of β-carotene of the varieties of SPM1 and SPM2 was determined using HPLC. Result showed significant genotypic differences (P < 0.001) for both cis- and trans- β-carotene contents among the varieties. The mean cis- and trans- β-carotene contents were generally highest in the proximal portions and lowest in the distal portion of cassava storage roots. There was no significant difference (P > 0.05) in the two sampling methods and there was also positive correlation between the cis- and trans- β -carotene contents for both trials 1 and 2. This study provides information on β-carotene distribution and the appropriateness of SPM2 as an alternative and easy sampling method for carotenoid contents in yellow-fleshed cassava varieties.
    https://dx.doi.org/10.1016/j.lwt.2016.03.002
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/856
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.lwt.2016.03.002
    IITA Subjects
    Cassava
    Agrovoc Terms
    Manihot Esculenta; Varieties; Sampling
    Regions
    Africa South Of Sahara
    Countries
    Sudan
    Journals
    LWT - Food Science and Technology
    Collections
    • Journal and Journal Articles4475
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