Browsing by Author "Jimoh, Akeem Adebayo"

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    Comparative Studies of the Physicochemical Properties of Moringa oleifera (Nigeria), Moringa oleifera (Kenya) and Moringa oleifera (India)
    (Longdom Publishing SL, 2015) Bale, Adebayo Tajudeen; Olubuade, Fatimah Eniola; Ogundele, Damilola Temitope; Olayemi, Victoria Tosin; Jimoh, Akeem Adebayo; Musa, Rukayat Titilayo
    The oil from Moringa oleifera seeds obtained from Afon in Asa Local Government Area of Kwara State, Nigeria, was extracted using n-hexane. The oil yield determined experimentally was 26.2%. The oil concentration was compared with those reported by [1,2]. Some physicochemical properties like the density, specific gravity, refractive index, pH, viscosity, acid value, peroxide value, saponification value, iodine value and FFA were determined. The results obtained were compared against previously reported data.
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    Sorption Study of Cd(II) from Aqueous Solution Using Activated Carbon Prepared from Vitellaria paradoxa Shell
    (2015) Bale, Adebayo Tajudeen; Jimoh, Akeem Adebayo; Adebayo, G.B; Otun, K.O; Ajiboye, Abdulfatai Temitope; Jamiu, W.; Alao, F.O
    Activated carbon prepared from vitellaria paradoxa (shea nut) shell using ortho-phosphoric acid has been used for the removal of Cd(II) ion from aqueous solution. The adsorbent sample was characterized by some physicochemical and spectroscopic parameters such as pH, point of zero charge (PZC), moisture content, iodine number, loss on ignition, bulk density, XRF, SEM and TEM. The pH and the PZC of the sample were found to be 4.0 and 5.8 respectively. The adsorbent sample has moisture content of 5.22 ± 0.1%, iodine number of 456.50 ± 59%, loss on ignition 10.71 ± 0.18% bulk density of 0.84 ± 0.09%. The XRF analysis indicated that Ca, Si and Fe were major constituents in the adsorbent sample. The SEM and TEM analysis results indicated good adsorptive characteristics of the adsorbent. Result from the FTIR analysis indicate presence of some important components such as C=O, O-H, C-O N-H, and P-H which responsible for high adsorptive capacity of the adsorbent. The equilibrium adsorption of Cd(II) ion data was well fitted with Langmuir and Freundlich isotherms with correlation coefficient of 0.996 and 0.998 respectively. The kinetic study revealed that pseudo-second order kinetic was better fitted compared to pseudo-first order kinetic. Thermodynamic experiment indicated that the adsorption process was exothermic with ∆H equals +27.84 KJ/mol and ∆S equals -0.993 KJ/molK.
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    The Studies of Antioxidant and Antimicrobial Potentials of the Leaf Extract of Bauhinia monandra Plant
    (Longdom Publishing SL, 2015) Bale, Adebayo Tajudeen; Ajiboye, Abdulfatai Temitope; Musa, MD; Otun, KO; Jimoh, Akeem Adebayo; Lawal, SO; Arowona, MT
    In the present study, the dried leaf (144g) of B. monandra plant was extracted with 95% ethanol. The crude extract was partitioned into ethyl acetate and n-hexane layers to afford fractions with golden brown and greenish yellow colours respectively. The fractions were concentrated and coded EFBM and HFBM. The preliminary phytochemical screening conducted on the crude extract and ethyl acetate fraction (EFBM) revealed the presence of flavonoids, tannins, steroids, terpenoids, saponin, cardiac glycoside and phenols. The antioxidant activity of EFBM and HFBM was evaluated using DPPH radical scavenging assay with ascorbic acid as a reference standard. However, the result of analysis revealed that EFBM exhibited high antioxidant (IC50 µg/mL=0.010) activity than HFBM (IC50 µg/m = 5.564) and reference standard ascorbic acid (IC50 µg/mL=30). The antibacterial activity of EFBM and HFBM against three gram negative bacterial strains (Eschericha coli, Pseudomonas aeruginosa and Klebsillia oxytoca) was also evaluated and it was found that EFBM exhibited highest antibacterial potential. In contrast to this, HFBM showed negligible or zero activity against all the bacteria strains. The results of the GC-MS analyses of EFBM and HFBM showed the presence of nine different phytochemicals. In EFBM, oleic acid which is classified as monounsaturated omega-9-fatty acid with percentage concentration, (40.76%) was the major compound as identified by the GC-MS and 4-hydroxy-5-methyl-3-propyl-2-hexanone with percentage concentration, (42.70%) was identified as the major compound in HFBM. The results of this studies demonstrated that folk medicine can be as effective as modern medicine to combat pathogenic microorganisms. The millenarian use of the leaf of this plant in folk medicine suggests that it represents an economic and safe alternative to treat infectious diseases.