Aim: The study investigated the anti-hyperglycemic and anti-hyperlipidemic potentials of methanol extracts of Piper guineense and Aframomum melegueta leaves with a view to utilizing the plants in the treatment and management of cardiovascular disorders. Methodology: Twenty-eight healthy albino rats were randomly divided into seven equal groups: Group I received normal saline (2 ml/kg bwt); Group II received a single dose of alloxan(150 mg/kg bwt) intraperitoneally; Group III received alloxan (150 mg/kg bwt) + glibenclamide (5 mg/kg bwt);Group IV received alloxan (150 mg/kg bwt) +PG (200 mg/kg bwt); Group V received alloxan (150 mg/kg bwt) + PG (400 mg/kg bwt); Group VI received alloxan (150 mg/kg bwt) + AM 200 (mg/kg bwt); Group VII received alloxan (150 mg/kg bwt) + AM (400 mg/kg bwt). The blood glucose level was determined before and after treatment with the extracts. The lipid: (total cholesterol (TC), triglycerides (TG), high density lipoprotein (HDL) and low density lipoprotein (LDL) were estimated using the Randox diagnostic kits. Results: The results revealed that alloxan was able to induce hyperglycemia at 150 mg/kg bwt and post-treatment with P. guineense and A. melegueta at 200 mg/kg and 400 mg/ kg bwt were able to significantly lower the blood glucose level which was quite apparent in AM treated groups. Also, the extracts at 200 mg/kg and 400 mg/kg were able to bring a significant (p < 0.05) reduction in TC, TG and LDL concentrations when compared to the alloxan treated group with the highest reduction in AM treated groups. Conclusion: These results revealed that the methanol extract of P. guineense and A. melegueta elicited anti-hyperglycemic and anti-hyperlipidemic potentials of the extracts with the highest effect observed in A. melegueta treated rats.
One of the most problematic groups of water pollutants is dye, a main constituent of textile industrial wastewater, which is carcinogenic. Therefore, this research delved into adsorption of dyes from textiles and wastewater using acid-treated as an adsorbent. The adsorbent was prepared by functionalizing the pod of carob with concentrated H3PO4. The effects of operational parameters such as adsorbent dosage, contact time, initial concentration of dye and temperature were studied and optimized using central composite design of design of experiment (DOE). The effects of process parameters (contact time, concentration, adsorbent dosage and temperature) on the dye adsorption were determined and optimized. It was observed that the colour removal efficiency increased with an increase in adsorbent mass and contact time. The adsorption process is endothermic as the percentage removal increases with temperature. The optimum contact time, concentration, adsorbent dosage and temperature were found to be 60oC, 9.74hr, 10ppm, and 5g respectively for the maximum decolorization.
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