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Articles by B.I. Aderiye
Total Records ( 5 ) for B.I. Aderiye
  B.I. Aderiye , S.A. Laleye and O.R. Ijalana
  The mycoflora of the soil of some commercial ventures such as cassava farm, cattle ranch, cocoa farm and sawmill was investigated. Aspergillus sp., Penicillium sp. were isolated from cassava farm and cattle ranch, while Absidia sp., Curvularia sp., Fusarium sp., Neurospora sp. and Rhizopus stolonifer were isolated from the cocoa and sawmill soils. Sawmill soil recorded the highest moisture and organic matter contents. The comparatively high pH value of the cattle ranch soil was attributed to large volume of urine and faeces of the cattle in the ranch. Calcium and potassium ions were the most prominent mineral nutrients especially in the cocoa farm and sawmill soils. Only Fusarium sp. was highly encouraged when cultured on soil extracts from the cassava farm, cocoa farm and sawmill. Spore germination, initiation of germ tubes and elongation of hyphae of Aspergillus niger and Curvularia sp. were adversely affected in all the soil extracts. However, the sawmill soil encouraged the production of an appreciable mycelia growth in species of Fusarium, Neurospora and Penicillium.
  A.O. Oluduro and B.I. Aderiye
  The efficacy of Moringa oleifera seed (LAM) in reducing total bacteria and coliforms in raw water was studied. Its antibacterial activity on some selected enteric bacterial pathogens was also investigated. About 88 and 97.5% of the total bacteria and coliforms,, respectively were reduced in the surface water after 24 h of treatment. Meanwhile, in the underground water sample, the seed extract reduced the total bacteria and coliforms by 88.3 and 93.3% with a precipitation rate of 7.7H102 and 2.42H102 cfu hG1, respectively. The coagulating efficiency and zones of inhibition increased correspondingly with an increase in concentration of the seed extract. At a concentration of 30μg mLG1, there was no microbial growth recorded in the water samples even after 96 h storage. However when Escherichia coli, Salmonella typhi and Shigella dysenteriae were exposed to the seed extract, a secondary bacterial growth resulting into an increase of about 185, 189 and 198% in their concentrations, respectively was observed after 24 h. The minimum inhibitory concentration of the seed extract ranged between 20 and 50μg mLG1.
  O.A. Oluduro , T.O. Idowu , B.I. Aderiye , O. Famurewa and O.O. Omoboye
  The antibacterial activity of crude aqueous and methanolic extracts of Moringa oleifera seed on some orthopaedic wounds isolates which include Klebsiella pneumoniae, Proteus vulgaris, Providencia stuartii, Escherichia coli, Streptococcus sp., Pseudomonas fluorescens, Acinetobacter baumannii, Burkholderia cepacia, Yersinia enterocolitica, Proteus mirabilis, Serratia rubidae, Salmonella pullorum and Klebsiella oxycota was investigated. Both the crude aqueous and methanolic extracts of the seed demonstrated an appreciable inhibitory effects on the isolates with zone of growth inhibition ranging from 15 to 30.5 mm with aqueous extract and 9 to 20 mm with methanolic extract. Both extracts compared favourably with the reference standard antibiotics used. Minimum inhibitory concentration of the seed ranged from 0.875 to 5.0 μg mL-1 in aqueous extract and 0.875 to 2.5 μg mL-1 in methanolic extract. Phytochemical investigation of the methanolic extract of the seed led to the isolation and identification of new benzyl isothiocyanate and phenylmethanamine derivatives named 4-(β-D-glucopyranosyl-1→4-α-L-rhamnopyranosyloxyl)-benzyl isothiocyanate (4) and 4-O-α-L-rhamnopyranosyloxy-N-glucopyranosyl-1→2-fructopyranosyloxy phenylmethanamine (5) along with three known compounds, 4-hydroxyphenyl acetic acid (1), O-methyl-4-(4'-O-acetyl-α-L-rhamnosyloxy) benzyl thiocarbamate (2) and 4-(α-L-rhamnopyranosyloxyl)-benzyl isothiocyanate (3). The structures were elucidated by extensive spectroscopic analyses which include Infra Red, Ultra Violet, Mass Spectrophotometer, 1D and 2D Nuclear Magnetic Resonance spectra as well as by comparison with literature data. Both the crude aqueous and methanolic extracts displayed broad spectrum of activity as they inhibited both the Gram negative and Gram positive bacteria tested.
  C.O. Adebayo and B.I. Aderiye
  This study was conducted to evaluate the antifungal activity of bacteriocins of lactic acid bacteria from some Nigerian fermented foods (Eko, Fufu, Iru and Ogi). Screening of 25 bacteriocin-producing Lactic Acid Bacteria (LAB) isolated from Eko, Fufu, Iru and Ogi against three spoilage fungi (Penicillium citrinum, Aspergillus niger and A. flavus) associated with stored fermented foods revealed that 68% of the isolates possessed antifungal activity. About 36% of those which showed a high fungicidal activity were isolated from sorghum Ogi. Penicillium citrinum was the most sensitive while Lactobacillus brevis SG1 was the most active of all the LAB strains. Spore germination and mycelia growth of P. citrinum was inhibited in the presence of both the LAB cells and their neutralized, cell-free culture supernatants (CFNS) using different bioassays. Generally, the results of all the bioassays were comparable. However, the antifungal activity of the LAB strains was easily detectable in liquid media and more pronounced on spore germination of the fungus than on its mycelia growth. The inhibitory effect of the bacteriocins on spore germination of P. citrinum ranged from 2.44 to 85.36% in Lactobacillus casei FF1 and L. brevis SG1, respectively. This study demonstrated that germination of fungal spores and fungal growth were significantly reduced by the LAB cells and/or their cell-free filtrates, thus indicating the propensity of the use of these antifungal substances in bio-control.
  O.B. Akpor , U.F. Okolomike , T.D. Olaolu and B.I. Aderiye
  The onset of the industrial revolution has led to a surge in the quantity of hazardous compounds that are released into the environment. These hazardous pollutants consist of a variety of hydrocarbons and other organic compounds that pose serious risks to humans, animals and the environment. The presence of hydrocarbons in wastewater effluents is due to a variety of sources, which include oil spillage, pesticides, urban storm water discharges and automobile oil. The removal of hydrocarbons from wastewater before discharge into receiving water bodies from wastewater effluents entails a variety of processes, with the most common processes being phytoremediation, bioremediation and chemical remediation. Phytoremediation is a cost effective method of reducing risk to human and ecosystem health posed by contaminated water. It entails the use of plants for the removal of contaminants and could involve mechanisms such as phytodegradation, rhizodegradation, rhizofiltration, phytoextraction, phytovolatilization, hydraulic control and phytostabilization. On the other hand, bioremediation is the use of microorganisms to breakdown or degrade pollutants in a contaminated site. The technology is low cost and has a generally high public acceptance. It consists of biostimulation (addition of nutrients to indigenous microorganisms) and bioaugmentation (addition of hydrocarbon degrading microorganisms). In the case of chemical remediation, it involves the use of chemicals for the treatment of contaminated sites. Substances, such as dispersants and solidifiers are used in chemical remediation. This study was aimed at reviewing the sources, impacts and remediation processes for hydrocarbon polluted wastewater effluents. This review was able to describe the sources and impacts of hydrocarbon polluted wastewater effluents and the various methods of treatment.
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