Browsing by Author "Raliat Abimbola Aladodo"

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    Effect of chitosan-silver nanoparticle composite-treated water on selected biochemical parameters of rats
    (Pharmacotherapy Group, University of Benin, Benin City, Nigeria., 2025) Raliat Abimbola Aladodo; Abdulhakeem Olarewaju Sulyman; Mutiu Adewunmi Alabi; Rasheed Bolaji Ibrahim; Juwon Samuel Afolayan; Ibrahim Opeyemi Ibrahim; Fausat Abimbola Jimoh; Yusuf Ayodeji Iyanda; Saheed Sabiu; Chidolue Chinenye Kingsley
    Purpose: To investigate the impact of chitosan-silver nanoparticles (chitosan-AgNP) composite-treated water on some biochemical parameters in the albino rats. Methods: Water samples were pretreated with chitosan-coated silver nanoparticles (chitosan-AgNPs) prior to oral administration in a rodent model. Following a 28-day experimental period, serum biochemical markers associated with hepatic and renal functions and enzymatic activities were quantitatively assessed to evaluate potential physiological and metabolic alterations. Results: Biochemical analysis revealed significant alterations in liver and kidney function markers in rats exposed to contaminated water. Liver alkaline phosphatase (ALP), aspartate aminotransferase (AST), and γ-glytamyl transferase (GGT) activities were significantly decreased (p < 0.05), while serum ALP, AST and GGT levels were significantly elevated (p < 0.05) in the contaminated water group compared to control. Serum urea and creatinine levels were significantly higher in rats exposed to contaminated water (90 ± 0.08 mg/dL and 21.73 ± 4.03 mg/dL, respectively) compared to the control group (43 ± 0.13 mg/dL and 16.37 ± 1.97 mg/dL, respectively; p < 0.05). Conversely, administration of chitosan-AgNP-treated water significantly reduced these elevations, bringing the values closer to control levels. Bacteriological analysis showed a drastic reduction in total coliform and fecal counts from 1.44 × 10⁷ CFU/mL and 7.2 × 10⁶ CFU/mL, respectively, to 0 CFU/mL after 27 days of chitosan-AgNP treatment. Conclusion: The findings suggest that chitosan-AgNP treatment significantly reduces bacterial load in water and positively affects selected biochemical parameters of albino rats, indicating its potential as a water treatment option.
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    Purification and Partial Characterization of Cellulase Produced by Aspergillus niger Cultured on Vitellaria paradoxa shells
    (2017) Abdulhakeem Olarewaju Sulyman; Yusuf A Iyanda; Afolabi Olaniyi Opasola; OtunOla Adedayo; Raliat Abimbola Aladodo
    This research investigated the purification and partial characterization of cellulase produced by Aspergillus niger cultured on Vitellaria paradoxa shells. Cellulase (endoglucanase) from A. niger was produced under optimum fermentation conditions at 35 °C, pH 4.7, V. paradoxa, 4 g/L, inoculum size of 10 mm and the fermentation media incubated for 120 hours. The crude endoglucanase obtained were partially purified by subjecting to ammonium sulphate precipitation, dialysis and gel filtration chromatography for further purification. The effect of temperature and pH on the activity of purified endoglucanase was determined. Cellulase was purified to 734.33 folds by Sephadex G-100 column chromatography with a specific activity and yield of 4.406 U/mg and 63.03% respectively. Fractions 4 and 7 contained the highest endoglucanase activity out of 18 fractions collected and the two fractions were pooled for further analysis. The activity of purified endoglucanase was optimum at a temperature of 40 °C and pH 5. Therefore, the purified endoglucanase produced may be explored in detergent industry.