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Variation in nutrient and antinutrient contents of tubers from yellow yam (Dioscorea cayenensis) genotypes grown at two locations

dc.contributor.authorAkin-Idowu, P.E.
dc.contributor.authorOdunola, O.A.
dc.contributor.authorAsiedu, Robert
dc.contributor.authorMaziya-Dixon, B.
dc.contributor.authorUwaifo, A.O.
dc.date.accessioned2019-12-04T11:15:21Z
dc.date.available2019-12-04T11:15:21Z
dc.date.issued2008
dc.identifier.citationAkin-Idowu, P.E., Odunola, O.A., Asiedu, R., Maziya-Dixon, B. & Uwaifo, A.O. (2008). Variation in nutrient and antinutrient contents of tubers from yellow yam (Dioscorea cayenensis) genotypes grown at two locations. Journal of Food, Agriculture & Environment, 6(3-4), 95-100.
dc.identifier.issn1459-0255
dc.identifier.urihttps://hdl.handle.net/20.500.12478/2961
dc.description.abstractEight genotypes of yellow yam (Dioscorea cayenensis) were planted at locations in two major yam-growing agroecologies of Nigeria (Onne in the humid forest zone and Ibadan in the forest/savannah transition zone) for assessment of the contents of minerals and antinutrients. Significant differences (P<0.05) were observed among the genotypes in tuber contents of Fe, Zn, Ca, Mn, P, Cu and tannin. The levels of Fe, Zn, Ca, Mg, K, P and phytate (Phy) were higher (P<0.05) in tubers grown at Ibadan than at Onne. Values for Cu and tannin were similar at the two locations for all genotypes. Significant (P<0.05) genotype x environment interactions were detected for tuber contents of only Zn, Mn and Phy. The ranges of molar ratios Phy:Zn (2.2 - 4.1), Ca:Phy (8.3 - 15.0), and [Ca][Phy]/[Zn] (0.01 - 0.02) suggest that phytate could inhibit bioavailability of calcium but not zinc in foods prepared from yellow yam. The tannin content was not high enough to influence the bioavailability of iron in yam-based foods. The levels of minerals and antinutrients in their tubers, the location and genotype x environment effects, and the potential influences on bioavailability of minerals in yam-based foods would be of interest to yam improvement and public health intervention programmes.
dc.language.isoen
dc.subjectMinerals
dc.subjectAntinutrients
dc.subjectGenotypes
dc.subjectGenotype X Environment
dc.subjectMolar Ratio
dc.subjectPhytates
dc.subjectTannin
dc.subjectDioscorea Cayenensis
dc.subjectYellow Yam
dc.titleVariation in nutrient and antinutrient contents of tubers from yellow yam (Dioscorea cayenensis) genotypes grown at two locations
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.affiliationUniversity of Ibadan
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectYam
cg.iitasubjectPlant Production
cg.iitasubjectPlant Health
cg.iitasubjectPlant Diseases
cg.iitasubjectPests Of Plants
cg.iitasubjectMarkets
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectDisease Control
cg.iitasubjectFood Security
cg.iitasubjectGenetic Improvement
cg.iitasubjectPost-Harvesting Technology
cg.iitasubjectLivelihoods
cg.iitasubjectHandling, Transport, Storage And Protection Of Agricultural Products
cg.accessibilitystatusLimited Access
local.dspaceid94062


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