A researcher with National Biotechnology Development Agency, Abuja, Nigeria, has a number of publications and specializes in Environmental Microbiology and Biotechnology. Phone: +2348034300190 Address: Bioresources Development Centre, National Biotechnology Development Agency, Ogbomoso
A bstract This study was designed to assess the potential of Arachis hypogaea (groundnut) to rest... more A bstract This study was designed to assess the potential of Arachis hypogaea (groundnut) to restore lead (Pb) contaminated soil. Pot experiment was conducted. Viable seeds were planted into five kilogram of the experimental soil placed in each plastic pot. Phytoremediation of soil contaminated with 0ppm (control), 5ppm, 10ppm, 15ppm, 20ppm and 25ppm heavy metal (Pb) were studied for a period of 12weeks under natural condition. The bacterial counts ranged from 32×10 6 cfu/g to 10×10 6 cfu/g in Pb polluted soil remediated with Arachis hypogaea (A. hypogaea) while the total fungi counts ranged from 25 × 10 2 cfu/g to 1 × 10 2 cfu/g. Microorganisms isolated from the rhizosphere were identified as Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Aspergillus flavus, Aspergillus niger, Mucor mucedo, Aspergillus fumigatus, Trichophytom mentagrophyte, Rhodotorula rubra and Candida albicans. Different compartments (leaf, stem, seeds and roots) of A. hypogae...
Biosorption of Chromium by Bacillus subtilis and Pseudomonas aeruginosa Isolated from Waste Dump ... more Biosorption of Chromium by Bacillus subtilis and Pseudomonas aeruginosa Isolated from Waste Dump Site This study focused on biosorption of Chromium using Pseudomonas aeruginosa and Bacillus subtilis. The study was performed by varying the parameters that determine the efficiency of biosorption, i.e. pH, biomass concentration, metal concentration, temperature and contact time. The results obtained shows that higher percentage of Chromium biosorption was recorded with Bacillus subtilis. The optimum value for each of the parameters was obtained in the following order; for pH, optimum value was 4.0, with highest biosorption percentage of 80.6 and 86.7% for Pseudomonas aeruginosa and Bacillus subtilis respectively. Highest biosorption percentage of 83.0 and 86.7% were recorded at concentration of 2ml for Pseudomonas aeruginosa and Bacillus subtilis respectively for biomass concentration. Chromium concentration produced 73.6 and 86.7% highest biosorption at 5ppm for Pseudomonas aeruginosa and Bacillus subtilis respectively..
The study was conducted to investigate the potential of Parkia biglobosa fruit pulp as substrate ... more The study was conducted to investigate the potential of Parkia biglobosa fruit pulp as substrate for citric acid production by Aspergillus niger. Reducing sugar was estimated by 3,5-dinitrosalicylic acid and citric acid was estimated spectrophotometrically using pyridine-acetic anhydride methods. The studies revealed that production parameters (pH, inoculum size, substrate concentration, incubation temperature, and fermentation period) had profound effect on the amount of citric acid produced. The maximum yield was obtained at the pH of 2 with citric acid of 1.15 g/L and reducing sugar content of 0.541 mMol−1, 3% vegetative inoculum size with citric acid yield of 0.53 g/L and reducing sugar content of 8.87 mMol−1, 2% of the substrate concentration with citric acid yield of 0.83 g/L and reducing sugar content of 9.36 mMol−1, incubation temperature of 55°C with citric acid yield of 0.62 g/L and reducing sugar content of 8.37 mMol−1, and fermentation period of 5 days with citric acid y...
Environmental pollution arising from oil spillage, especially hydrocarbon is a major environmenta... more Environmental pollution arising from oil spillage, especially hydrocarbon is a major environmental and public health concern. This environmental threat has led to the development of methods used to remediate an oil polluted site, which include the use of physical, chemical, and biological methods. Biological methods have been developed and improved for cleaning up oil contaminated sites and have become an alternative to chemical and physical methods. The potential of bacterial consortium to degrade crude oil was studied for 28 days at 30 C in mineral salt media containing one gram of crude oil. Three bacterial species (Pseudomonas, Micrococcus and Bacillus) were used and their potential to degrade crude oil was tested separately. The best three degrader, were used to construct a bacterial consortium. The highest percentage (98.4%) of total petroleum hydrocarbon degradation was recorded for a bacterial consortium, as compared to the percentage of degradation recorded for single isolate Micrococcus sp. IM6 (77.6%), Pseudomonas sp. IM2 (73.1%) and Bacillus sp. IM4 (67.7%) species, respectively. The result obtained from the study shows that a bacterial consortium is more effective than its single components and it can be used in reclaiming crude oil polluted soil.
This study evaluates the efficacy of yeasts isolated from soil in the treatment of textile wastew... more This study evaluates the efficacy of yeasts isolated from soil in the treatment of textile wastewater. Two yeast species were isolated from soil; they were identified as Candida zeylanoides and Saccharomyces cerevisiae. The yeasts were inoculated into flask containing effluent and incubated for 15 days. Saccharomyces cerevisiae showed the most significant treatment capacity with a 66% reduction in BOD; this was followed closely by Candida zeylanoides with 57.3% reduction in BOD and a consortium of the two species showed the least remediation potential of 36.9%. The use of Saccharomyces cerevisiae and Candida zeylanoides in treatment of textile wastewater will help to limit the adverse environmental and health implications associated with disposal of untreated effluent into water bodies.
A study was designed to assess the phytoextraction potential ofGlycine maxL. for lead (Pb). Pots ... more A study was designed to assess the phytoextraction potential ofGlycine maxL. for lead (Pb). Pots experiment was conducted. Viable seeds were planted in 5 kg of soil placed in each plastic pot having 0 ppm (control), 5 ppm, 10 ppm, 15 ppm, 20 ppm and 25 ppm of Pb respectively. The study was carried out for a period of 12 weeks under natural conditions. Physicochemical properties of the soil were determined using standard methods. The results revealed that pH, phosphorous and moisture contents increased while nitrogen and organic carbon contents decreased in polluted soil remediated withGlycine maxL. compared to the unpolluted soil. Leaf, stem, seeds and roots of the plant were analyzed for Pb uptake after 12 weeks. The plants mopped up substantial concentration of Pb in the above plant biomass of the seeds (4.2 mg/kg), stem (1.37 mg/kg) and leaves (3.37 mg/kg) compared to concentrations in the roots (1.53 mg/kg). The phytoextraction ability of the plant was assessed in terms of its b...
This study was designed to remediate water contaminated with heavy metals (arsenic, cadmium and l... more This study was designed to remediate water contaminated with heavy metals (arsenic, cadmium and lead) using two green macroalgal species, Spirogyra and Cladophora. The results obtained from this study indicate that both macroalgae can be employed to adsorb and detoxify any of the three heavy metals from aqueous solution. However, it was also discovered from the study that Cladophora adsorbed and detoxified more of the cadmium and lead than arsenic as the organism had removal efficiency for cadmium and lead as 88.78% and 94.85% respectively meanwhile for arsenic it was only 23.10%. On the otherhand however, Spirogyra adsorbed more of arsenic than cadmium and lead as the organism had a record of 82.76% of arsenic compared to the 28.97% and 47.43%absorption forcadmium and lead respectively. It is therefore concluded based on the results of the present study that reclamation and reuse of water from public or industrial wastewater, or even from water contaminated as a result of precious ...
Human exercises including industrialization and agricultural practices contributes significantly ... more Human exercises including industrialization and agricultural practices contributes significantly to the degradation and contamination of environment which contrarily affects the water bodies (streams and sea) that is a need forever. Universally, water contamination is a noteworthy issue far and wide. However aquatic resources comprises of greatly extensive variety of flora and fauna resources which offer an expansive exhibit of products with potential utilitarian application in farming and industries which renders profitable advantages and services. The slow poising of the waters is seen in Nigeria and the decimation of vegetation and agricultural land by industrial effluents release, agricultural release and oil spills. Regardless of general society and worldwide organizations' arrangement concentrate on this issue, the circumstance in Nigeria appears deteriorating and in this manner requests earnest and prompt considerations.
Human exercises including industrialization and agricultural practices contributes significantly ... more Human exercises including industrialization and agricultural practices contributes significantly to the degradation and contamination of environment which contrarily affects the water bodies (streams and sea) that is a need forever. Universally, water contamination is a noteworthy issue far and wide. However aquatic resources comprises of greatly extensive variety of flora and fauna resources which offer an expansive exhibit of products with potential utilitarian application in farming and industries which renders profitable advantages and services. The slow poising of the waters is seen in Nigeria and the decimation of vegetation and agricultural land by industrial effluents release, agricultural release and oil spills. Regardless of general society and worldwide organizations' arrangement concentrate on this issue, the circumstance in Nigeria appears deteriorating and in this manner requests earnest and prompt considerations.
Qualitative determination of chemical and nutritional composition of Cassia occidentalis, an unde... more Qualitative determination of chemical and nutritional composition of Cassia occidentalis, an underexploited crop seed in Nigeria, was carried out. Seeds of C. occidentalis were found to be rich in crude protein, carbohydrate, and mineral elements. Mineral analysis of C. occidentalis showed the seed as good source of antioxidant micronutrients such as iron, calcium, potassium, sodium and magnessium. The phytochemical screening of the seed showed the presence of carbohydrate, terpene, steroid, sugar and tannins. Alkaloids, saponnins and glycosides were absent. Although the oil has a very low peroxide value and high iodine value, it cannot be recommended for consumption because of the low yield as well as its repulsive odour. The seed, however, can serve as a cheap source of protein, energy, as well as antioxidant micronutrients supplements in both man and animal.
A study was premeditated to evaluate the phytoextraction potential of Acalypha wilkesiana for zin... more A study was premeditated to evaluate the phytoextraction potential of Acalypha wilkesiana for zinc (Zn) remediation. Sets of pot experiment were conducted. Stems of Acalypha wilkesiana were planted in five kilograms of soil placed in each plastic pot having 0 ppm, 5 ppm, 10 ppm, 15 ppm, 20 ppm and 25 ppm of Zn respectively. The study was carried out for a period of 12 weeks under natural conditions. Physicochemical properties of the soil were determined using standard methods. The results revealed that pH, phosphorous and moisture contents increased while nitrogen and organic carbon contents decreased in polluted soil remediated with Acalypha wilkesiana when compared to the zinc free soil. Leaves, stems and roots of the plant were analyzed for Zn uptake after 12 weeks. The plant mopped up substantial concentrations of Zn in the stem (6.21 ppm) and leaves (8.23 ppm) compared to concentrations in the roots (6.08 ppm). The phytoextraction ability of the plants was assessed in terms of its metal bioconcentration factor (BCF) and translocation factor (TF). It was observed that the levels of the Zn in the roots and shoots after 12 weeks showed that more bio-available pool of Zn was translocated from the root to the leaves and stem in that order. The results obtained suggests that the plant have phytoextraction capability and could be used in re-establishing soil polluted with Zn.
A bstract This study was designed to assess the potential of Arachis hypogaea (groundnut) to rest... more A bstract This study was designed to assess the potential of Arachis hypogaea (groundnut) to restore lead (Pb) contaminated soil. Pot experiment was conducted. Viable seeds were planted into five kilogram of the experimental soil placed in each plastic pot. Phytoremediation of soil contaminated with 0ppm (control), 5ppm, 10ppm, 15ppm, 20ppm and 25ppm heavy metal (Pb) were studied for a period of 12weeks under natural condition. The bacterial counts ranged from 32×10 6 cfu/g to 10×10 6 cfu/g in Pb polluted soil remediated with Arachis hypogaea (A. hypogaea) while the total fungi counts ranged from 25 × 10 2 cfu/g to 1 × 10 2 cfu/g. Microorganisms isolated from the rhizosphere were identified as Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa, Aspergillus flavus, Aspergillus niger, Mucor mucedo, Aspergillus fumigatus, Trichophytom mentagrophyte, Rhodotorula rubra and Candida albicans. Different compartments (leaf, stem, seeds and roots) of A. hypogae...
Biosorption of Chromium by Bacillus subtilis and Pseudomonas aeruginosa Isolated from Waste Dump ... more Biosorption of Chromium by Bacillus subtilis and Pseudomonas aeruginosa Isolated from Waste Dump Site This study focused on biosorption of Chromium using Pseudomonas aeruginosa and Bacillus subtilis. The study was performed by varying the parameters that determine the efficiency of biosorption, i.e. pH, biomass concentration, metal concentration, temperature and contact time. The results obtained shows that higher percentage of Chromium biosorption was recorded with Bacillus subtilis. The optimum value for each of the parameters was obtained in the following order; for pH, optimum value was 4.0, with highest biosorption percentage of 80.6 and 86.7% for Pseudomonas aeruginosa and Bacillus subtilis respectively. Highest biosorption percentage of 83.0 and 86.7% were recorded at concentration of 2ml for Pseudomonas aeruginosa and Bacillus subtilis respectively for biomass concentration. Chromium concentration produced 73.6 and 86.7% highest biosorption at 5ppm for Pseudomonas aeruginosa and Bacillus subtilis respectively..
The study was conducted to investigate the potential of Parkia biglobosa fruit pulp as substrate ... more The study was conducted to investigate the potential of Parkia biglobosa fruit pulp as substrate for citric acid production by Aspergillus niger. Reducing sugar was estimated by 3,5-dinitrosalicylic acid and citric acid was estimated spectrophotometrically using pyridine-acetic anhydride methods. The studies revealed that production parameters (pH, inoculum size, substrate concentration, incubation temperature, and fermentation period) had profound effect on the amount of citric acid produced. The maximum yield was obtained at the pH of 2 with citric acid of 1.15 g/L and reducing sugar content of 0.541 mMol−1, 3% vegetative inoculum size with citric acid yield of 0.53 g/L and reducing sugar content of 8.87 mMol−1, 2% of the substrate concentration with citric acid yield of 0.83 g/L and reducing sugar content of 9.36 mMol−1, incubation temperature of 55°C with citric acid yield of 0.62 g/L and reducing sugar content of 8.37 mMol−1, and fermentation period of 5 days with citric acid y...
Environmental pollution arising from oil spillage, especially hydrocarbon is a major environmenta... more Environmental pollution arising from oil spillage, especially hydrocarbon is a major environmental and public health concern. This environmental threat has led to the development of methods used to remediate an oil polluted site, which include the use of physical, chemical, and biological methods. Biological methods have been developed and improved for cleaning up oil contaminated sites and have become an alternative to chemical and physical methods. The potential of bacterial consortium to degrade crude oil was studied for 28 days at 30 C in mineral salt media containing one gram of crude oil. Three bacterial species (Pseudomonas, Micrococcus and Bacillus) were used and their potential to degrade crude oil was tested separately. The best three degrader, were used to construct a bacterial consortium. The highest percentage (98.4%) of total petroleum hydrocarbon degradation was recorded for a bacterial consortium, as compared to the percentage of degradation recorded for single isolate Micrococcus sp. IM6 (77.6%), Pseudomonas sp. IM2 (73.1%) and Bacillus sp. IM4 (67.7%) species, respectively. The result obtained from the study shows that a bacterial consortium is more effective than its single components and it can be used in reclaiming crude oil polluted soil.
This study evaluates the efficacy of yeasts isolated from soil in the treatment of textile wastew... more This study evaluates the efficacy of yeasts isolated from soil in the treatment of textile wastewater. Two yeast species were isolated from soil; they were identified as Candida zeylanoides and Saccharomyces cerevisiae. The yeasts were inoculated into flask containing effluent and incubated for 15 days. Saccharomyces cerevisiae showed the most significant treatment capacity with a 66% reduction in BOD; this was followed closely by Candida zeylanoides with 57.3% reduction in BOD and a consortium of the two species showed the least remediation potential of 36.9%. The use of Saccharomyces cerevisiae and Candida zeylanoides in treatment of textile wastewater will help to limit the adverse environmental and health implications associated with disposal of untreated effluent into water bodies.
A study was designed to assess the phytoextraction potential ofGlycine maxL. for lead (Pb). Pots ... more A study was designed to assess the phytoextraction potential ofGlycine maxL. for lead (Pb). Pots experiment was conducted. Viable seeds were planted in 5 kg of soil placed in each plastic pot having 0 ppm (control), 5 ppm, 10 ppm, 15 ppm, 20 ppm and 25 ppm of Pb respectively. The study was carried out for a period of 12 weeks under natural conditions. Physicochemical properties of the soil were determined using standard methods. The results revealed that pH, phosphorous and moisture contents increased while nitrogen and organic carbon contents decreased in polluted soil remediated withGlycine maxL. compared to the unpolluted soil. Leaf, stem, seeds and roots of the plant were analyzed for Pb uptake after 12 weeks. The plants mopped up substantial concentration of Pb in the above plant biomass of the seeds (4.2 mg/kg), stem (1.37 mg/kg) and leaves (3.37 mg/kg) compared to concentrations in the roots (1.53 mg/kg). The phytoextraction ability of the plant was assessed in terms of its b...
This study was designed to remediate water contaminated with heavy metals (arsenic, cadmium and l... more This study was designed to remediate water contaminated with heavy metals (arsenic, cadmium and lead) using two green macroalgal species, Spirogyra and Cladophora. The results obtained from this study indicate that both macroalgae can be employed to adsorb and detoxify any of the three heavy metals from aqueous solution. However, it was also discovered from the study that Cladophora adsorbed and detoxified more of the cadmium and lead than arsenic as the organism had removal efficiency for cadmium and lead as 88.78% and 94.85% respectively meanwhile for arsenic it was only 23.10%. On the otherhand however, Spirogyra adsorbed more of arsenic than cadmium and lead as the organism had a record of 82.76% of arsenic compared to the 28.97% and 47.43%absorption forcadmium and lead respectively. It is therefore concluded based on the results of the present study that reclamation and reuse of water from public or industrial wastewater, or even from water contaminated as a result of precious ...
Human exercises including industrialization and agricultural practices contributes significantly ... more Human exercises including industrialization and agricultural practices contributes significantly to the degradation and contamination of environment which contrarily affects the water bodies (streams and sea) that is a need forever. Universally, water contamination is a noteworthy issue far and wide. However aquatic resources comprises of greatly extensive variety of flora and fauna resources which offer an expansive exhibit of products with potential utilitarian application in farming and industries which renders profitable advantages and services. The slow poising of the waters is seen in Nigeria and the decimation of vegetation and agricultural land by industrial effluents release, agricultural release and oil spills. Regardless of general society and worldwide organizations' arrangement concentrate on this issue, the circumstance in Nigeria appears deteriorating and in this manner requests earnest and prompt considerations.
Human exercises including industrialization and agricultural practices contributes significantly ... more Human exercises including industrialization and agricultural practices contributes significantly to the degradation and contamination of environment which contrarily affects the water bodies (streams and sea) that is a need forever. Universally, water contamination is a noteworthy issue far and wide. However aquatic resources comprises of greatly extensive variety of flora and fauna resources which offer an expansive exhibit of products with potential utilitarian application in farming and industries which renders profitable advantages and services. The slow poising of the waters is seen in Nigeria and the decimation of vegetation and agricultural land by industrial effluents release, agricultural release and oil spills. Regardless of general society and worldwide organizations' arrangement concentrate on this issue, the circumstance in Nigeria appears deteriorating and in this manner requests earnest and prompt considerations.
Qualitative determination of chemical and nutritional composition of Cassia occidentalis, an unde... more Qualitative determination of chemical and nutritional composition of Cassia occidentalis, an underexploited crop seed in Nigeria, was carried out. Seeds of C. occidentalis were found to be rich in crude protein, carbohydrate, and mineral elements. Mineral analysis of C. occidentalis showed the seed as good source of antioxidant micronutrients such as iron, calcium, potassium, sodium and magnessium. The phytochemical screening of the seed showed the presence of carbohydrate, terpene, steroid, sugar and tannins. Alkaloids, saponnins and glycosides were absent. Although the oil has a very low peroxide value and high iodine value, it cannot be recommended for consumption because of the low yield as well as its repulsive odour. The seed, however, can serve as a cheap source of protein, energy, as well as antioxidant micronutrients supplements in both man and animal.
A study was premeditated to evaluate the phytoextraction potential of Acalypha wilkesiana for zin... more A study was premeditated to evaluate the phytoextraction potential of Acalypha wilkesiana for zinc (Zn) remediation. Sets of pot experiment were conducted. Stems of Acalypha wilkesiana were planted in five kilograms of soil placed in each plastic pot having 0 ppm, 5 ppm, 10 ppm, 15 ppm, 20 ppm and 25 ppm of Zn respectively. The study was carried out for a period of 12 weeks under natural conditions. Physicochemical properties of the soil were determined using standard methods. The results revealed that pH, phosphorous and moisture contents increased while nitrogen and organic carbon contents decreased in polluted soil remediated with Acalypha wilkesiana when compared to the zinc free soil. Leaves, stems and roots of the plant were analyzed for Zn uptake after 12 weeks. The plant mopped up substantial concentrations of Zn in the stem (6.21 ppm) and leaves (8.23 ppm) compared to concentrations in the roots (6.08 ppm). The phytoextraction ability of the plants was assessed in terms of its metal bioconcentration factor (BCF) and translocation factor (TF). It was observed that the levels of the Zn in the roots and shoots after 12 weeks showed that more bio-available pool of Zn was translocated from the root to the leaves and stem in that order. The results obtained suggests that the plant have phytoextraction capability and could be used in re-establishing soil polluted with Zn.
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Papers by Aransiola Sesan Abiodun