The kinetic studies of Elais guineensis sap is of major important in determining the extent of preservation of palm wine, since production is highest in the rainy season. The effect of 0.1, 0.2, 0.4, 0.8 and 1.6% Asystasia gangeticum leaves extract (in order to inhibit the activities of microbes during fermentation of E. guineensis sap) on the rate of palm wine fermentation, using 100 mL portion of fresh palm sap was determined. The rate of fermentation is measured as the rate of carbon dioxi...
Dioscorea rotundata plant stem is an oral paste used for controlling persistence cough and hiccups in Oghe Traditional medical practices. In order to ascertain the extent of activity around its medicinal use, the anti-tussive activity and phytochemical screening of D. rotundata stem extracts were evaluated. The anti-tussive activity was studied on guinea pigs dosed with citric acid fumes. Phytochemical studies using simple chemical tests and TLC analysis were carried out on the stem extracts....
Mixing water is very vital for development of concrete and /or mortar. It can also be a source of aggressive ions in the cured concrete/ mortar. This study investigated the effect of mixing water on performance of cement mortar made from selected Ordinary Portland cement (OPC) and Portland pozzolana cement (PPC). Test cements were sampled from three local cement manufacturing plants while mixing water was randomly sampled from different construction sites in Kajiado, Machakos and Nairobi coun...
ABSTRACT Gold mohur -Delonixregia, Tamarind - TamarindusindicaandC amel foot Pilostigmathonningii are tropical seeds reported to be native to Madasgasca, now they grow in every frost free nation across the world Based on the compositional analysis, the three seeds are rich in nutritional components especially proteins, oil and dietary fiber. The three seeds are rich in Glutamine, Aspartate, Leucine, Lysine, Arginine and valine. This result support the main aim of this research project...
ABSTRACT Zinc Oxide (ZnO) nanowires with hexagonal structure were successfully synthesized by chemical bath deposition technique. The obtained nanowires were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX) and spectrophotometer. The SEM micrographs revealed the morphology of ZnO nanowires with diameter between 170.3 and 481nm and showed that the pH of the bath solution, 8.1 is the optimized value to form ZnO nanowires ...
ABSTRACT Zinc Oxide (ZnO) nanowires with hexagonal structure were successfully synthesized by chemical bath deposition technique. The obtained nanowires were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), energy dispersive X-ray analysis (EDX) and spectrophotometer. The SEM micrographs revealed the morphology of ZnO nanowires with diameter between 170.3 and 481nm and showed that the pH of the bath solution, 8.1 is the optimized value to form ZnO nanowires ...
ABSTRACT The kinetics and mechanisms of the redox reactions of μ-oxo-bridged iron(III) complex ion Na4[(FeEDTA)2 O].12H2O denoted as Fe2 O4+, with the thiols-2 mercaptobenzothiazole(MBSH), 2- mercaptophenol(PhSH), 2-mercaptoacetic acid (MSH), and l-cysteine (RSH) have been investigated in aqueous perchloric acid medium at [H+]=1×10-4 mol dm-,3,I=0.05mol dm-3(NaClO4) and at T =27.0±0.1oC. The reactions were monitored under pseudo-first order condition .The rate of reaction was first-ord...
ABSTRACT Dried and pulverised leaves of A. boonei De Wild (Apocynacea) were extracted using methanol for 48 h. The methanol extract obtained was defatted using n-hexane and fractionated using ethylacetate. The ethyl acetate fraction of the extract was subjected to vacuum liquid chromatography (VLC) in silica gel using gradients of hexane-ethyl acetate. The VLC fractions were further separated on Sephadex LH-20. A total of 10 compounds were successfully isolated and purified using the reverse...
ABSTRACT Dried and pulverised leaves of A. boonei De Wild (Apocynacea) were extracted using methanol for 48 h. The methanol extract obtained was defatted using n-hexane and fractionated using ethylacetate. The ethyl acetate fraction of the extract was subjected to vacuum liquid chromatography (VLC) in silica gel using gradients of hexane-ethyl acetate. The VLC fractions were further separated on Sephadex LH-20. A total of 10 compounds were successfully isolated and purified using the reverse...
ABSTRACT Cr (VI) is a well-known highly toxic metal. This project focuses on the removal of Cr (VI) from contaminated water using activated carbon entrapped in calcium alginate beads. Activated carbon used for this work was prepared from an organic waste material called walnut shell by carbonization using phosphoric acid as an activating agent. 0.5g of activated carbon was added to 10mL of 4% sodium alginate solution.The mixture was promptly dropped into 3.5% aqueous solution of calciu...
ABSTRACT This study was undertaken to determine the natural raaionuclides activities of 238U, 232Th, and 4°K as contaminants and their distribution from dust particles obtained from selected qua1Ties in Ekiti and Ondo States. This work was performed in four quarries sites located in Ekiti and Ondo States and a control sample. The radioactivity concentrations of the natural radionuclides (238U. 232Th and 4°K) in the collected quarries dust samples were determined by gamma ray spectrometry. ...
ABSTRACT Three species of garden egg namely Solanum aithiopicum, Solanum aubergine and Solanum anguivi processed into raw and boiled powdered flour, samples were taken for their nutritional and mineral components using standard analytical methods. Proximate composition determined include total ash, moisture content, crude fibre, crude protein, crude fat and carbohydrate by difference, the mineral components determined are P, Fe, Mg, Na, Mn, Zn, Ni and Cu. The proximate analysis (%) shows th...
ABSTRACT Gold mohur -Delonixregia, Tamarind - TamarindusindicaandC amel foot - Pilostigmathonningii are tropical seeds reported to be native to Madasgasca, now they grow in every frost free nation across the world .. Based on the compositional analysis, the three seeds are rich in nutritional components especially proteins, oil and dietary fiber. The three seeds are rich in Glutamine, Aspartate, Leucine, Lysine, Arginine and valine. This result support the main aim of this research proje...
The concentrations of Ni, Mn, Cd, Cu, Zn, Pb and Cr, were determined in some pastas consumed in Nigeria, with a view to providing information on the dietary intakes of heavy metals and exposure of humans to toxic metals. The concentrations of these seven (7) elements were determined by atomic spectrometry after nitric acid/perchloric acid digestion. The concentrations of the metals (µg/g) in the locally manufactured pasta samples were in the following ranges: Ni (0.109 - 0.344); Mn (0.377 - ...
ABSTRACT The synthesis of ten new alkynylated derivatives of angular phenoxazine and alkynylated naphthoquinone was thoroughly investigated. The first intermediate, 6-chloro-5Hbenzo[ a]phenoxazin-5-one was obtained by the condensation of 2-aminophenol with 2,3- dichloro-1,4- naphthoquinone in the presence of anhydrous sodium tricarbonate (IV) . Thereafter, the intermediate and 2,3-dichloro-1,4-naphthoquinone were each suggested to Sonogashira cross–coupling reaction under copper-, amine-, ...