Publications

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effect of the mode of incorporation on the disintegrant properties of acid modified water and white yam starches.acid modified starches obtained from two species of yam tubers namely white yam - dioscorea rotundata l. and water yam - d. alata l. dial2 have been investigated as intra- and extra-granular disintegrants in paracetamol tablet formulations. the native starches were modified by acid hydrolysis and employed as disintegrant at concentrations of 5 and 10% w/w and their disintegrant properties compared with those of corn starch bp. the tensile strength and drug release properties of the tablets, asse ...201223960789
changes in biochemical constituents and induction of early sprouting by triadimefon treatment in white yam (dioscorea rotundata poir.) tubers during storage.the ability of triadimefon (tdm), a triazolic fungicide, to alter the biochemical constituents and thereby minimizing the days required for sprouting in white yam (dioscorea rotundata poir.) tubers during storage under (30+/-2) degrees c in the dark, was studied. tdm at 20 mg/l was given to tubers by dipping the tubers in treatment solution containing 20 mg/l tdm on 10, 25 and 40 d after storage (das). starch, sugars, protein, amino acid contents as well as protease and alpha-amylase activities ...200717444605
a genetic linkage map of guinea yam ( dioscorea rotundata poir.) based on aflp markers.a genetic linkage map of the tetraploid white yam ( dioscorea rotundata poir.) was constructed based on 341 co-dominantly scored amplified fragment length polymorphism (aflp) markers segregating in an intraspecific f(1) cross. the f(1) mapping population was produced by crossing a landrace cultivar tdr 93-1 as female parent to a breeding line tdr 87/00211 as the male parent. the marker segregation data were split into maternal and paternal data sets, and separate genetic linkage maps were constr ...200212582485
variation, heritability and genetic advance of eight characters in white yam.phenotypic and genotypic coefficients of variation, heritability, and genetic advance were estimated for: time to vine emergence, leaf size, leaf virus infection, plant leafiness, shoot height, vine dry weight, number of tubers per hill and tuber yield per hill in white yam (dioscorea rotundata poir.) using plants recently derived from seedlings (sp) as well as those that have been clonally propagated for 3-5 years (cp). estimates for these parameters were much lower in sp than in cp plants. mea ...198324263630
characterization of acid modified dioscorea starches as direct compression excipient.starches obtained from four different dioscorea species namely white (d. rotundata), bitter (d. dumetorum), chinese (d. oppositifolia) and water yam (d. alata), were modified by acid hydrolysis and the physicochemical, material and tablet formation properties of the starches were investigated with the aim of determining their usefulness as a direct compression excipient in pharmaceutical tablets. the results obtained indicate that the physicochemical, material and tablet properties of the acid m ...200919519180
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