Lannea acida is a plant known to have various medicinal and therapeutic properties. The
phytoche... more Lannea acida is a plant known to have various medicinal and therapeutic properties. The phytochemicals or secondary metabolites and antibacterial activity of its root and stem bark were studied in this research work. The phytochemical screening of the plant was carried out using standard methods of analysis and these investigations revealed the presence of bioactive components comprising flavonoids, alkaloids, saponins, steroids, terpenoids, glycosides and phenols while tannins were not detected in both the root and stem bark of the plant. The plant was extracted with water and 100% methanol via cold maceration method and the extracts were subjected to antibacterial activities using the agar plate disc diffusion and nutrient broth dilution techniques. against E. coli, S. aureus and Shigella spp to ascertain its medicinal and therapeutic properties at various concentrations range from 50 mg/mL – 6.25 mg/mL. From the study it was observed that the stem bark extract has the higher antibacterial activity against E. coli and Shigella spp with mean zone of inhibition of 18.50 ± 0.02 and 14.10 ± 0.12 mm while the root recorded the higher antibacterial activity against S.aureus with mean zone of inhibition of 16.37 ± 0.07 mm. The result indicates that the extracts of the root and stem bark of this plant possess antibacterial activities.
Biodiesel is becoming popular as an environmentally friendly fuel, it has been used as an alterna... more Biodiesel is becoming popular as an environmentally friendly fuel, it has been used as an alternative for diesel fuel in the automotive industry, commonly known as No. 2 diesel. This research seeks to explore the potentials of Citrullus lanatus (Watermelon) seed oil as feedstock for biodiesel production. Various samples were collected, extracted, analyzed, transesterified and Characterized using standard spectroscopic and analytical procedures. The quality of the biodiesel and its biodegradability was also investigated. The oil quality parameters of Citrullus lanatus were found to be: oil content of 43.67 %, acid value 10.61 mgKOH/g, Iodine value 40.91 gI2/100g, Moisture content 2.83 %, saponification value 137.45 mgKOH/g, Peroxide value 8.00 meq/kg. The biodiesel yield, specific gravity (SG), density and flash point of the methyl ester were found to be 81 %, 0.804 , 0.87 g/cm and 124 C respectively. The biodiesel was found to be inherently degradable (38.45 %). These results showed...
Lannea acida is a plant known to have various medicinal and therapeutic properties. The
phytoche... more Lannea acida is a plant known to have various medicinal and therapeutic properties. The phytochemicals or secondary metabolites and antibacterial activity of its root and stem bark were studied in this research work. The phytochemical screening of the plant was carried out using standard methods of analysis and these investigations revealed the presence of bioactive components comprising flavonoids, alkaloids, saponins, steroids, terpenoids, glycosides and phenols while tannins were not detected in both the root and stem bark of the plant. The plant was extracted with water and 100% methanol via cold maceration method and the extracts were subjected to antibacterial activities using the agar plate disc diffusion and nutrient broth dilution techniques. against E. coli, S. aureus and Shigella spp to ascertain its medicinal and therapeutic properties at various concentrations range from 50 mg/mL – 6.25 mg/mL. From the study it was observed that the stem bark extract has the higher antibacterial activity against E. coli and Shigella spp with mean zone of inhibition of 18.50 ± 0.02 and 14.10 ± 0.12 mm while the root recorded the higher antibacterial activity against S.aureus with mean zone of inhibition of 16.37 ± 0.07 mm. The result indicates that the extracts of the root and stem bark of this plant possess antibacterial activities.
Biodiesel is becoming popular as an environmentally friendly fuel, it has been used as an alterna... more Biodiesel is becoming popular as an environmentally friendly fuel, it has been used as an alternative for diesel fuel in the automotive industry, commonly known as No. 2 diesel. This research seeks to explore the potentials of Citrullus lanatus (Watermelon) seed oil as feedstock for biodiesel production. Various samples were collected, extracted, analyzed, transesterified and Characterized using standard spectroscopic and analytical procedures. The quality of the biodiesel and its biodegradability was also investigated. The oil quality parameters of Citrullus lanatus were found to be: oil content of 43.67 %, acid value 10.61 mgKOH/g, Iodine value 40.91 gI2/100g, Moisture content 2.83 %, saponification value 137.45 mgKOH/g, Peroxide value 8.00 meq/kg. The biodiesel yield, specific gravity (SG), density and flash point of the methyl ester were found to be 81 %, 0.804 , 0.87 g/cm and 124 C respectively. The biodiesel was found to be inherently degradable (38.45 %). These results showed...
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Drafts by Hamza Yakubu
phytochemicals or secondary metabolites and antibacterial activity of its root and stem bark were
studied in this research work. The phytochemical screening of the plant was carried out using
standard methods of analysis and these investigations revealed the presence of bioactive
components comprising flavonoids, alkaloids, saponins, steroids, terpenoids, glycosides and
phenols while tannins were not detected in both the root and stem bark of the plant. The plant
was extracted with water and 100% methanol via cold maceration method and the extracts were
subjected to antibacterial activities using the agar plate disc diffusion and nutrient broth dilution
techniques. against E. coli, S. aureus and Shigella spp to ascertain its medicinal and therapeutic
properties at various concentrations range from 50 mg/mL – 6.25 mg/mL. From the study it was
observed that the stem bark extract has the higher antibacterial activity against E. coli and
Shigella spp with mean zone of inhibition of 18.50 ± 0.02 and 14.10 ± 0.12 mm while the root
recorded the higher antibacterial activity against S.aureus with mean zone of inhibition of 16.37
± 0.07 mm. The result indicates that the extracts of the root and stem bark of this plant possess
antibacterial activities.
Papers by Hamza Yakubu
phytochemicals or secondary metabolites and antibacterial activity of its root and stem bark were
studied in this research work. The phytochemical screening of the plant was carried out using
standard methods of analysis and these investigations revealed the presence of bioactive
components comprising flavonoids, alkaloids, saponins, steroids, terpenoids, glycosides and
phenols while tannins were not detected in both the root and stem bark of the plant. The plant
was extracted with water and 100% methanol via cold maceration method and the extracts were
subjected to antibacterial activities using the agar plate disc diffusion and nutrient broth dilution
techniques. against E. coli, S. aureus and Shigella spp to ascertain its medicinal and therapeutic
properties at various concentrations range from 50 mg/mL – 6.25 mg/mL. From the study it was
observed that the stem bark extract has the higher antibacterial activity against E. coli and
Shigella spp with mean zone of inhibition of 18.50 ± 0.02 and 14.10 ± 0.12 mm while the root
recorded the higher antibacterial activity against S.aureus with mean zone of inhibition of 16.37
± 0.07 mm. The result indicates that the extracts of the root and stem bark of this plant possess
antibacterial activities.