Adebayo A . Oladejo | Nnamdi Azikiwe University, Awka-Nigeria (original) (raw)
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Papers by Adebayo A . Oladejo
Journal of Applied Life Sciences International, 2018
Aims: To evaluate the contributions of Nigerian leafy vegetables to nutrition and health. Methodo... more Aims: To evaluate the contributions of Nigerian leafy vegetables to nutrition and health. Methodology: Eight leafy vegetables were comparatively analyzed for proximate, mineral and antinutrient compositions. Results: The proximate composition showed that the vegetables are good sources of protein, energy and fiber. Brassica oleracea has the highest protein content while Brassica oleracea and Trianthema portulacastrum are the richest in fiber. The result showed that the vegetables are good sources of iron, manganese, magnesium, potassium and calcium. Trianthema portulacastrum has the highest levels of minerals. The Recommended Dietary Allowance for manganese, magnesium and calcium can be met by a 100 g per day servings of the vegetables; while up to 60% of the Recommended Dietary Allowance for iron and potassium can be met by a 100 g per day servings of the vegetables. The vegetables were poor sources of zinc. The level of sodium in the vegetables was very low. The antinutrients in the investigated vegetables were much lower than safe limits and Original Research Article
Journal of Applied Life Sciences International, 2017
Journal of Applied Life Sciences International, 2017
The antioxidant potential of Bridelia ferruginea, which is a widely used medicinal plant in Niger... more The antioxidant potential of Bridelia ferruginea, which is a widely used medicinal plant in Nigeria, subtropical Africa and parts of Asia was investigated using thiobarbituric acid reactive species (TBARS) assay. The aqueous extract of Bridelia ferruginea stem bark used in this study showed inhibition against the formation of thiobarbituric acid reactive species (TBARS) induced by Iron (II) sulphate in the liver and brain tissue homogenates of the locally bred male and female albino-Wistar rats used. The extract was discovered to have different antioxidant potentials in a manner that was concentration dependent. The aqueous extract of the plant showed a good percentage inhibition of 56.06% in the liver homogenate and 60.65% in the brain homogenate both at a concentration of 0.33 mg/ml using iron (II) sulphate as pro-oxidant with IC 50 values of 3.00 ± 1.59
Aims: To evaluate the contributions of Nigerian leafy vegetables to nutrition and health. Methodo... more Aims: To evaluate the contributions of Nigerian leafy vegetables to nutrition and health. Methodology: Eight leafy vegetables were comparatively analyzed for proximate, mineral and antinutrient compositions. Results: The proximate composition showed that the vegetables are good sources of protein, energy and fiber. Brassica oleracea has the highest protein content while Brassica oleracea and Trianthema portulacastrum are the richest in fiber. The result showed that the vegetables are good sources of iron, manganese, magnesium, potassium and calcium. Trianthema portulacastrum has the highest levels of minerals. The Recommended Dietary Allowance for manganese, magnesium and calcium can be met by a 100 g per day servings of the vegetables; while up to 60% of the Recommended Dietary Allowance for iron and potassium can be met by a 100 g per day servings of the vegetables. The vegetables were poor sources of zinc. The level of sodium in the vegetables was very low. The antinutrients in the investigated vegetables were much lower than safe limits and Original Research Article Ajayi et al.; JALSI, 16(1): 1-8, 2018; Article no.JALSI.26666 2 levels reported for other plant sourced foods including nuts, roots, beans and berries. Conclusion: The investigated vegetables are good sources of essential nutrients and are low in antinutrients.
The study investigated the antibacterial activity of Jatropha curcas using aqueous, methanol and ... more The study investigated the antibacterial activity of Jatropha curcas using aqueous, methanol and ethanolic extracts that were obtained from the leaf against growth inhibition of Escherichia coli, Staphylococcus aureus, Proteus spp, Klebsiella pneumonia and Pseudomonas aeruginosa. Tannins, saponins, flavonoids, alkaloids, oxalates and cyanogenic glycosides were the phytochemicals present. All test microorganisms were significantly inhibited by the leaf extracts but the presence of oxalates and cyanogenic glycosides in the leaf could present potential toxicity and therefore reduces the application of this plant to topical but not systemic use. Clearly, additional pharmacology and safety studies are warranted to investigate clinical potential of Jatropha curcas as a topical antibiotic for use against susceptible pathogens.
Moringa oleifera is a small size multipurpose tree of approximately 5 to 10 m in height which is ... more Moringa oleifera is a small size multipurpose tree of approximately 5 to 10 m in height which is cultivated all over the world. The phytochemical constituents of aqueous and ethanolic stem bark and seed extracts of Moringa oleifera were assessed and compared. The mineral and proximate analyses were carried out on some selected parts of the plant. The result of the qualitative phytochemical constituents showed the presence of tannins, flavonoid, alkaloids, saponins, steroids, terpenoids and cardiac glycoside in both aqueous and ethanolic extracts. Results showed the presence of iron, calcium, potassium and zinc. Proximate analysis in all the investigated plant Original Research Article
The antioxidant potential of Bridelia ferruginea, which is a widely used medicinal plant in Niger... more The antioxidant potential of Bridelia ferruginea, which is a widely used medicinal plant in Nigeria, subtropical Africa and parts of Asia was investigated using thiobarbituric acid reactive species (TBARS) assay. The aqueous extract of Bridelia ferruginea stem bark used in this study showed inhibition against the formation of thiobarbituric acid reactive species (TBARS) induced by Iron (II) sulphate in the liver and brain tissue homogenates of the locally bred male and female albino-Wistar rats used. The extract was discovered to have different antioxidant potentials in a manner that was concentration dependent. The aqueous extract of the plant showed a good percentage inhibition of 56.06% in the liver homogenate and 60.65% in the brain homogenate both at a concentration of 0.33 mg/ml using iron (II) sulphate as pro-oxidant with IC 50 values of 3.00 ± 1.59
Journal of Applied Life Sciences International, 2018
Aims: To evaluate the contributions of Nigerian leafy vegetables to nutrition and health. Methodo... more Aims: To evaluate the contributions of Nigerian leafy vegetables to nutrition and health. Methodology: Eight leafy vegetables were comparatively analyzed for proximate, mineral and antinutrient compositions. Results: The proximate composition showed that the vegetables are good sources of protein, energy and fiber. Brassica oleracea has the highest protein content while Brassica oleracea and Trianthema portulacastrum are the richest in fiber. The result showed that the vegetables are good sources of iron, manganese, magnesium, potassium and calcium. Trianthema portulacastrum has the highest levels of minerals. The Recommended Dietary Allowance for manganese, magnesium and calcium can be met by a 100 g per day servings of the vegetables; while up to 60% of the Recommended Dietary Allowance for iron and potassium can be met by a 100 g per day servings of the vegetables. The vegetables were poor sources of zinc. The level of sodium in the vegetables was very low. The antinutrients in the investigated vegetables were much lower than safe limits and Original Research Article
Journal of Applied Life Sciences International, 2017
Journal of Applied Life Sciences International, 2017
The antioxidant potential of Bridelia ferruginea, which is a widely used medicinal plant in Niger... more The antioxidant potential of Bridelia ferruginea, which is a widely used medicinal plant in Nigeria, subtropical Africa and parts of Asia was investigated using thiobarbituric acid reactive species (TBARS) assay. The aqueous extract of Bridelia ferruginea stem bark used in this study showed inhibition against the formation of thiobarbituric acid reactive species (TBARS) induced by Iron (II) sulphate in the liver and brain tissue homogenates of the locally bred male and female albino-Wistar rats used. The extract was discovered to have different antioxidant potentials in a manner that was concentration dependent. The aqueous extract of the plant showed a good percentage inhibition of 56.06% in the liver homogenate and 60.65% in the brain homogenate both at a concentration of 0.33 mg/ml using iron (II) sulphate as pro-oxidant with IC 50 values of 3.00 ± 1.59
Aims: To evaluate the contributions of Nigerian leafy vegetables to nutrition and health. Methodo... more Aims: To evaluate the contributions of Nigerian leafy vegetables to nutrition and health. Methodology: Eight leafy vegetables were comparatively analyzed for proximate, mineral and antinutrient compositions. Results: The proximate composition showed that the vegetables are good sources of protein, energy and fiber. Brassica oleracea has the highest protein content while Brassica oleracea and Trianthema portulacastrum are the richest in fiber. The result showed that the vegetables are good sources of iron, manganese, magnesium, potassium and calcium. Trianthema portulacastrum has the highest levels of minerals. The Recommended Dietary Allowance for manganese, magnesium and calcium can be met by a 100 g per day servings of the vegetables; while up to 60% of the Recommended Dietary Allowance for iron and potassium can be met by a 100 g per day servings of the vegetables. The vegetables were poor sources of zinc. The level of sodium in the vegetables was very low. The antinutrients in the investigated vegetables were much lower than safe limits and Original Research Article Ajayi et al.; JALSI, 16(1): 1-8, 2018; Article no.JALSI.26666 2 levels reported for other plant sourced foods including nuts, roots, beans and berries. Conclusion: The investigated vegetables are good sources of essential nutrients and are low in antinutrients.
The study investigated the antibacterial activity of Jatropha curcas using aqueous, methanol and ... more The study investigated the antibacterial activity of Jatropha curcas using aqueous, methanol and ethanolic extracts that were obtained from the leaf against growth inhibition of Escherichia coli, Staphylococcus aureus, Proteus spp, Klebsiella pneumonia and Pseudomonas aeruginosa. Tannins, saponins, flavonoids, alkaloids, oxalates and cyanogenic glycosides were the phytochemicals present. All test microorganisms were significantly inhibited by the leaf extracts but the presence of oxalates and cyanogenic glycosides in the leaf could present potential toxicity and therefore reduces the application of this plant to topical but not systemic use. Clearly, additional pharmacology and safety studies are warranted to investigate clinical potential of Jatropha curcas as a topical antibiotic for use against susceptible pathogens.
Moringa oleifera is a small size multipurpose tree of approximately 5 to 10 m in height which is ... more Moringa oleifera is a small size multipurpose tree of approximately 5 to 10 m in height which is cultivated all over the world. The phytochemical constituents of aqueous and ethanolic stem bark and seed extracts of Moringa oleifera were assessed and compared. The mineral and proximate analyses were carried out on some selected parts of the plant. The result of the qualitative phytochemical constituents showed the presence of tannins, flavonoid, alkaloids, saponins, steroids, terpenoids and cardiac glycoside in both aqueous and ethanolic extracts. Results showed the presence of iron, calcium, potassium and zinc. Proximate analysis in all the investigated plant Original Research Article
The antioxidant potential of Bridelia ferruginea, which is a widely used medicinal plant in Niger... more The antioxidant potential of Bridelia ferruginea, which is a widely used medicinal plant in Nigeria, subtropical Africa and parts of Asia was investigated using thiobarbituric acid reactive species (TBARS) assay. The aqueous extract of Bridelia ferruginea stem bark used in this study showed inhibition against the formation of thiobarbituric acid reactive species (TBARS) induced by Iron (II) sulphate in the liver and brain tissue homogenates of the locally bred male and female albino-Wistar rats used. The extract was discovered to have different antioxidant potentials in a manner that was concentration dependent. The aqueous extract of the plant showed a good percentage inhibition of 56.06% in the liver homogenate and 60.65% in the brain homogenate both at a concentration of 0.33 mg/ml using iron (II) sulphate as pro-oxidant with IC 50 values of 3.00 ± 1.59