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Investigating manual sprout removal in stored yam: effect of tuber sizes on some physicochemical properties

dc.contributor.authorEtudaiye, H.A.
dc.contributor.authorUvere, P.O.
dc.contributor.authorRees, D.
dc.contributor.authorAbayomi, L.
dc.contributor.authorWestby, A.
dc.contributor.authorMaroya, N.G.
dc.contributor.authorUkpabi, U.J.
dc.date.accessioned2020-11-23T12:52:42Z
dc.date.available2020-11-23T12:52:42Z
dc.date.issued2020
dc.identifier.citationEtudaiye, H.A., Uvere, P.O., Rees, D., Abayomi, L., Westby, A., Maroya, N.G. & Ukpabi, U.J. (2020). Investigating manual sprout removal in stored yam: effect of tuber sizes on some physicochemical properties. London Journal of Research in Science: Natural and Formal, 20(4), 81-95.
dc.identifier.issn2631-8490
dc.identifier.urihttps://hdl.handle.net/20.500.12478/7002
dc.description.abstractThe study focused on manual sprout removal and effect of tuber sizes on some physicochemical properties of the stored yams. Yam variety, Ameh (Dioscorea rotundata) with different tuber sizes ≤ 0.5 Kg, 0.6-0.9 Kg and ≥ 1.0 Kg for small (SS), medium (MS) and big(BS) sizes, respectively, were used. The primary nodal complex (PNC) was removed using three methods: hand picking, half cutting and full cutting. Tubers were stored on shelves for 16 weeks in a yam storage laboratory at National Root Crops Research Institute, Umudike, Nigeria. Physicochemical parameters determined were temperature, relative humidity, sprout count, weight loss (WL), dry matter (wet basis), starch yield, amylose, reducing sugars (TRS), water absorption capacity (WAC) and bulk density (BD). Weight loss significantly (p>0.05) increased with storage. The mean dry matter (DM) across sprout removal methods showed significant difference (p>0.05), and lowest in big tubers (30.77%). DM was lowest in control and hand picking at 16 weeks. Starch yield, amylose and TRS were highest in the MS tubers. Values of MS tubers for starch, amylose and TRS were 25.88%, 13.11% and 3.11%, respectively. Starch, amylose and sugars decreased with storage. There was a significant difference (p>0.05) in starch yield, amylose and sugars across tuber size and across storage period. Mean values of tubers for manual sprout removal methods during storage on BD and WAC were significant (p>0.05) and highest in BS tubers (0.47 g/ml BD and 2.00 g/ml WAC).
dc.description.sponsorshipYam Improvement for Income and Food Security in West Africa
dc.format.extent81-95
dc.language.isoen
dc.subjectYams
dc.subjectDioscorea Rotundata
dc.subjectTubers
dc.subjectVarieties
dc.subjectStorage
dc.subjectPhysicochemical Properties
dc.subjectSprouting
dc.subjectDry Matter
dc.subjectSoil Density
dc.titleInvestigating manual sprout removal in stored yam: effect of tuber sizes on some physicochemical properties
dc.typeJournal Article
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.contributor.affiliationUniversity of Nigeria
cg.contributor.affiliationUniversity of Greenwich
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.identifier.bibtexciteidETUDAIYE:2020
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Production
cg.iitasubjectYam
cg.journalLondon Journal of Research in Science: Natural and Formal
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution-NonCommercial 4.0 (CC BY-NC 4.0)
cg.targetaudienceScientists
cg.iitaauthor.identifierNorbert Maroya: 0000-0002-7079-4729
cg.futureupdate.requiredNo


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