This page has only limited features, please log in for full access.
Diarrhoea is the passage of three or more loose or liquid stools per day or more frequent passage than is normal for an individual. Diarrhoea alters the microbiome, thus the immune system, and is a significant cause of morbidity and mortality in young children. This study evaluated the association between the risk factors and diarrhoea prevalence among children under five years in Lagos and Ogun States, located in Southwest Nigeria. Participants included 280 women aged 15–49 years and children aged 0–59 months. The study used quantitative data, which were assessed by a structured questionnaire. Data obtained were analyzed using the Statistical Package for the Social Sciences Software Version 25.0 and Microsoft Excel 2013. The relationships and/or association between variables were evaluated using Pearson's Chi Square and logistic regression tests. One hundred and eighteen (42%) of the children were male, and 162 (58%) were female. The majority of the children belonged to the age group 0–11 months (166). Age ( p = 0.113 ) and gender ( p = 0.366 ) showed no significant association with diarrhoea among the children. The majority of the mothers belonged to the age group 30–34. Multivariate analysis showed that the mother's level of education (95% CI for OR = 11.45; P = 0.0001 ) and family income (95% CI for OR = 7.61, P = 0.0001 ) were the most significant risk factors for diarrhoea among children. Mother’s educational status, mother's employment, and family income were the factors significantly associated with diarrhoea in Southwest Nigeria. The study recommends that female education should be encouraged by the right government policy to enhance the achievement of the sustainable development goal three (SDG 3) for the possible reduction of neonates and infants' deaths in Nigeria.
Harriet U. Ugboko; Obinna C. Nwinyi; Solomon U. Oranusi; Fasina F. Fagbeminiyi. Risk Factors of Diarrhoea among Children Under Five Years in Southwest Nigeria. International Journal of Microbiology 2021, 2021, 1 -9.
AMA StyleHarriet U. Ugboko, Obinna C. Nwinyi, Solomon U. Oranusi, Fasina F. Fagbeminiyi. Risk Factors of Diarrhoea among Children Under Five Years in Southwest Nigeria. International Journal of Microbiology. 2021; 2021 ():1-9.
Chicago/Turabian StyleHarriet U. Ugboko; Obinna C. Nwinyi; Solomon U. Oranusi; Fasina F. Fagbeminiyi. 2021. "Risk Factors of Diarrhoea among Children Under Five Years in Southwest Nigeria." International Journal of Microbiology 2021, no. : 1-9.
Thermogravimetric analysis (TGA) was carried out to study the stability of nanoformulations used for the decontamination of mycotoxins. The TGA patterns of the nanoformulations from montmorillonite clay and Cymbopogon citratus (lemongrass) extracts were assessed with temperature ranging from ambient (20°C) to 1000°C. The various nanoformulations studied included unmodified montmorillonite clay (Mont), montmorillonite washed with sodium chloride (Mont-Na), montmorillonite mixed with lemongrass essential oil (Mont-LGEO), and montmorillonite mixed with an equal quantity of lemongrass powder (Mont-LGP). There was no significant difference in the median of the various nanoformulations within 4 weeks at p < 0.05 using the Kruskal–Wallis nonparametric test. For the TGA, the first degradation for montmorillonite clay and the nanoformulations occurred at a temperature between 80 and 101°C and was attributed to the loss of lattice water outside the coordination sphere with a range of 3.5–6.5% weight loss. The second degradation occurred within the temperature of 338 to 344°C, and the third, at a temperature between 640 and 668°C for Mont and the formulations of Mont-Na, Mont-LGEO, and Mont-LGP. There were strong similarities in the degradation patterns of Mont and Mont-Na with the minimum difference being the relatively higher weight loss of the sodium-exchanged cation for Mont-Na at the third degradation step. Hence, the order of stability from the most resistant to the least resistant to degradation is as follows: Mont-LGEO ≥ Mont-Na ≥ Mont ≥ Mont-LGP.
Bunmi K. Olopade; Obinna C. Nwinyi; Joseph A. Adekoya; Isiaka A. Lawal; Olushola A. Abiodun; Solomon U. Oranusi; Patrick B. Njobeh. Thermogravimetric Analysis of Modified Montmorillonite Clay for Mycotoxin Decontamination in Cereal Grains. The Scientific World Journal 2020, 2020, 1 -5.
AMA StyleBunmi K. Olopade, Obinna C. Nwinyi, Joseph A. Adekoya, Isiaka A. Lawal, Olushola A. Abiodun, Solomon U. Oranusi, Patrick B. Njobeh. Thermogravimetric Analysis of Modified Montmorillonite Clay for Mycotoxin Decontamination in Cereal Grains. The Scientific World Journal. 2020; 2020 ():1-5.
Chicago/Turabian StyleBunmi K. Olopade; Obinna C. Nwinyi; Joseph A. Adekoya; Isiaka A. Lawal; Olushola A. Abiodun; Solomon U. Oranusi; Patrick B. Njobeh. 2020. "Thermogravimetric Analysis of Modified Montmorillonite Clay for Mycotoxin Decontamination in Cereal Grains." The Scientific World Journal 2020, no. : 1-5.
Diarrhoeal diseases collectively constitute a serious public health challenge globally, especially as the leading cause of death in children (after respiratory diseases). Childhood diarrhoea affecting children under the age of five accounts for approximately 63% of the global burden. Accurate and timely detection of the aetiology of these diseases is very crucial; but conventional methods, apart from being laborious and time-consuming, often fail to identify difficult-to-culture pathogens. The aetiological agent of an average of up to 40% of cases of diarrhoea cannot be identified. This review gives an overview of the recent trends in the epidemiology and treatment of diarrhoea and aims at highlighting the potentials of metagenomics technique as a diagnostic method for enteric infections.
Harriet U. Ugboko; Obinna C. Nwinyi; Solomon U. Oranusi; John O. Oyewale. Childhood diarrhoeal diseases in developing countries. Heliyon 2020, 6, e03690 .
AMA StyleHarriet U. Ugboko, Obinna C. Nwinyi, Solomon U. Oranusi, John O. Oyewale. Childhood diarrhoeal diseases in developing countries. Heliyon. 2020; 6 (4):e03690.
Chicago/Turabian StyleHarriet U. Ugboko; Obinna C. Nwinyi; Solomon U. Oranusi; John O. Oyewale. 2020. "Childhood diarrhoeal diseases in developing countries." Heliyon 6, no. 4: e03690.
Montmorillonite clay has a wide range of applications, one of which includes the binding of mycotoxins in foods and feeds through adsorption. T-2 toxin, produced by some Fusarium, Myrothecium, and Stachybotrys species, causes dystrophy in the brain, heart, and kidney. Various formulations that include lemongrass essential oil-modified montmorillonite clay (LGEO-MMT), lemongrass powder (LGP), montmorillonite clay washed with 1 mM NaCl (Na-MMT), montmorillonite clay (MMT), and lemongrass powder mixed with montmorillonite clay (LGP-MMT) were applied to maize at concentrations of 8% and 12% and stored for a period of one month at 30 °C. Unmodified montmorillonite clay and LGP served as the negative controls alongside untreated maize. Fourier Transform Infrared (FTIR) spectra of the various treatments showed the major functional groups as Si-O and -OH. All treatment formulations were effective in the decontamination of T-2 toxin in maize. Accordingly, it was revealed that the inclusion of Na-MMT in maize at a concentration of 8% was most effective in decontaminating T-2 toxin by 66% in maize followed by LGP-MMT at 12% inclusion level recording a 56% decontamination of T-2 toxin in maize (p = 0.05). Montmorillonite clay can be effectively modified with plant extracts for the decontamination of T-2 toxin.
Bunmi K. Olopade; Solomon U. Oranusi; Obinna C. Nwinyi; Isiaka A. Lawal; Sefater Gbashi; Patrick B. Njobeh. Decontamination of T-2 Toxin in Maize by Modified Montmorillonite Clay. Toxins 2019, 11, 616 .
AMA StyleBunmi K. Olopade, Solomon U. Oranusi, Obinna C. Nwinyi, Isiaka A. Lawal, Sefater Gbashi, Patrick B. Njobeh. Decontamination of T-2 Toxin in Maize by Modified Montmorillonite Clay. Toxins. 2019; 11 (11):616.
Chicago/Turabian StyleBunmi K. Olopade; Solomon U. Oranusi; Obinna C. Nwinyi; Isiaka A. Lawal; Sefater Gbashi; Patrick B. Njobeh. 2019. "Decontamination of T-2 Toxin in Maize by Modified Montmorillonite Clay." Toxins 11, no. 11: 616.
Bambara nut is one of the underutilized legumes. Conversely this underutilized legume could be utilized to solve the ravaging food security issues in sub-Saharan Africa owing to its balanced nutritive composition. Bambara nut limited use, is because of the antnutritional factors, hard to cook phenomenon and difficulty in dehulling. Because of high global demand on food security, there is an urgent need to review possible methods that could reduce the limiting factors to the widespread use of this crop and enunciate other benefits derivable from this legume. In this review, we appraised the nutritional composition of Bambara nut from different geographic locations, commonly associated bacteria species that predominate mostly during Bambara fermentation and their potential uses as probiotics. Expedient areas for further research were highlighted in this paper
Obinna C Nwinyi; Phoebe O Umane. Review On Probiotics Potentials, Nutritional Composition Of Bambara Nut (Vigna Subterranea (L.) -An Underutilized LegumE. IOP Conference Series: Earth and Environmental Science 2019, 331, 012057 .
AMA StyleObinna C Nwinyi, Phoebe O Umane. Review On Probiotics Potentials, Nutritional Composition Of Bambara Nut (Vigna Subterranea (L.) -An Underutilized LegumE. IOP Conference Series: Earth and Environmental Science. 2019; 331 (1):012057.
Chicago/Turabian StyleObinna C Nwinyi; Phoebe O Umane. 2019. "Review On Probiotics Potentials, Nutritional Composition Of Bambara Nut (Vigna Subterranea (L.) -An Underutilized LegumE." IOP Conference Series: Earth and Environmental Science 331, no. 1: 012057.
In this study, we evaluated the influence of sawdust as biostimulatory agent on waste-lubricating oil site. To achieve this, two sites were contaminated with waste lubricating oil, with one of the site amended with sawdust and the other left to serve as control. This study was conducted during the dry season. Decreases in pH and percentage moisture content were used to monitor the metabolic activities between the amended and control sites. Both sites (amended and control) showed decrease in the pH values however the control site showed just slight decrease. The mean pH value obtained ranged between 7.68± 0.15-8.08± 0.57 for the amended and control while the mean moisture content (%) 38.3 – 48.6 respectively for the amended and control sites. We screened for fungal species that showed growth on sawdust amended site using waste lubricating oil as source of carbon/energy. This was done through conventional enrichment culture methods. The isolated fungal strains tentatively named as P1, P2, P3, P4 and P5 were identified by visual observation and micro-morphological technique. From the cultural, and morphological characterization and comparison with respect to the standard reference of fungi, the fungal species were identified as members Aspergillus niger, Rhizopus sp., Pénicillium sp., Aspergillus flavus and Mucor sp. Pure cultures of these fungal species were tested for their ability to utilize waste lubricating oil as carbon and energy source. The ability of these fungal species to use the waste lubricating oil was done by monitoring their physiological responses via Optical Density (OD) and pH gradient readings. The mean pH obtained range from 5.90-7.33 and the (OD) 0.715-1.978. The fluctuations in OD readings as well as pH values for the different microfungi may be due to variation in growth patterns of the different fungal species.
Obinna C Nwinyi; P. J Ikhine. Effect of Saw-dust on soils contaminated with waste lubricating oil. IOP Conference Series: Earth and Environmental Science 2019, 331, 012059 .
AMA StyleObinna C Nwinyi, P. J Ikhine. Effect of Saw-dust on soils contaminated with waste lubricating oil. IOP Conference Series: Earth and Environmental Science. 2019; 331 (1):012059.
Chicago/Turabian StyleObinna C Nwinyi; P. J Ikhine. 2019. "Effect of Saw-dust on soils contaminated with waste lubricating oil." IOP Conference Series: Earth and Environmental Science 331, no. 1: 012059.
Spent oil is any petroleum-based or synthetic oil that contain impurities or loss of major properties thus affecting its unique purpose. In this study, we selected and contaminated a site in Covenant University with spent oil. This site was amended with cow dung and studied for 56 days. Spent oil contaminated soil without stimulation with cow dung served as the control. This study was done during the dry season period and the sites left to natural edaphic factors. Physicochemical parameters such as pH, moisture content were monitored to determine the influence of cow dung as biostimulatory agent when compared with control (untreated) site. Within the period of this investigation, we recorded decrease in the pH value on the amended site, the value ranged between 8.60-7.77 while the control increased from 8.30 -8.42. The moisture content (%) were 95.0- 82.1 and 90.8-103.0 for the amended and control sites respectively. Following these obtained dynamics, we isolated organisms using enrichment technique from the contaminated sites and the control. We characterized the isolates using phenotypic characteristics and comparison with standard reference organisms. The bacterial isolates obtained include: Arthrobacter Mycobacteria Pseudomonas and Corynebacterium. The axenic cultures ability to utilize spent oil was monitored via indirect estimation using pH and Optical density dynamics for 240hrs. All the organisms exhibited growth in the MS medium supplemented with spent oil. The pH and optical density (OD) from bacterial species obtained from the control sample ranged between 6.91 ± 0.20- 6.56± 0.29 and the OD 0.278±0.150-0.826 ± 0.33. For the amended sample, the bacterial species showed decline in pH that ranged between 7.13±0.30 - 6.33±0.10 while the recorded OD values ranged between 0.190±0.03 - 0.621±0.50. Comparing the results obtained for the control and the amended soil. It was obvious that organisms from the amended soil (either in-situ or in-vivo) showed more metabolic activities on the spent oil. This study suggests that use of cow dung in appropriate concentrations could be very useful in bioremediation of soil contaminated with spent oil.
Obinna C Nwinyi; B. A Akinmulewo. Remediation of soil polluted with spent oil using cow dung. IOP Conference Series: Earth and Environmental Science 2019, 331, 012058 .
AMA StyleObinna C Nwinyi, B. A Akinmulewo. Remediation of soil polluted with spent oil using cow dung. IOP Conference Series: Earth and Environmental Science. 2019; 331 (1):012058.
Chicago/Turabian StyleObinna C Nwinyi; B. A Akinmulewo. 2019. "Remediation of soil polluted with spent oil using cow dung." IOP Conference Series: Earth and Environmental Science 331, no. 1: 012058.
Recently discovered extraintestinal Escherichia fergusonii obtained from non-clinical samples has exhibited the potential for acquiring multiple beta-lactamase genes, just like many extraintestinal Escherichia coli strains. Albeit, they are often omitted or classified as E. coli. This study aimed to, therefore, identify carbapenem-resistant extended-spectrum beta-lactamase (ESBL) producing E. fergusonii isolates from clinical samples, determine their evolutionary relatedness using 16S rRNA sequencing analysis and screen for beta-lactamase genes. A total of 135 septic wound samples were obtained from patients on referral at a General Hospital in Lagos, Nigeria. For the phenotypic identification of isolates from culture-positive samples, morphological, and physiological tests were carried out. Identities of the isolates harbouring beta-lactamase genes were assigned to their genus strains using the 16S rRNA sequencing. The Kirby Bauer disc diffusion technique and double-disc synergy test were used to screen isolates for multidrug resistance and ESBL production. Carbapenem-resistant ESBL producing isolates were screened for beta-lactamase genes in a polymerase chain reaction. Three E. fergusonii isolates (CR11, CR35 and CR49) were obtained during this study. E. fergusonii strains were motile, non-lactose and non-sorbitol fermenting but positive for cellobiose and adonitol fermentation. The I6S rRNA assigned the phenotypically identified isolates to E. fergusonii species. All three isolates were multidrug-resistant, carbapenem-resistant and ESBL producers. Isolates CR11 and CR35 harboured cefotaximase (CTX-M) and temoniera (TEM) beta-lactamase genes while CR49 harboured sulfhydryl variable (SHV) beta-lactamase gene. We herein report the detection of multiple beta-lactamase genes in carbapenem-resistant ESBL producing E. fergusonii from clinical samples.
Tomilola Adesina; Obinna Nwinyi; Nandita De; Olayemi Akinnola; Emmanuel Omonigbehin. First Detection of Carbapenem-Resistant Escherichia fergusonii Strains Harbouring Beta-Lactamase Genes from Clinical Samples. Pathogens 2019, 8, 164 .
AMA StyleTomilola Adesina, Obinna Nwinyi, Nandita De, Olayemi Akinnola, Emmanuel Omonigbehin. First Detection of Carbapenem-Resistant Escherichia fergusonii Strains Harbouring Beta-Lactamase Genes from Clinical Samples. Pathogens. 2019; 8 (4):164.
Chicago/Turabian StyleTomilola Adesina; Obinna Nwinyi; Nandita De; Olayemi Akinnola; Emmanuel Omonigbehin. 2019. "First Detection of Carbapenem-Resistant Escherichia fergusonii Strains Harbouring Beta-Lactamase Genes from Clinical Samples." Pathogens 8, no. 4: 164.
Obinna Nwinyi; Tolulope A. Owolabi. Scanning electron microscopy and Fourier transmission analysis of polyhydroxyalkanoates isolated from bacteria species from abattoir in Ota, Nigeria. Journal of King Saud University - Science 2019, 31, 285 -298.
AMA StyleObinna Nwinyi, Tolulope A. Owolabi. Scanning electron microscopy and Fourier transmission analysis of polyhydroxyalkanoates isolated from bacteria species from abattoir in Ota, Nigeria. Journal of King Saud University - Science. 2019; 31 (3):285-298.
Chicago/Turabian StyleObinna Nwinyi; Tolulope A. Owolabi. 2019. "Scanning electron microscopy and Fourier transmission analysis of polyhydroxyalkanoates isolated from bacteria species from abattoir in Ota, Nigeria." Journal of King Saud University - Science 31, no. 3: 285-298.
Ifeoluwa Adekoya; Adewale Obadina; Judith Phoku; Obinna Nwinyi; Patrick Njobeh. Contamination of fermented foods in Nigeria with fungi. LWT - Food Science and Technology 2017, 86, 76 -84.
AMA StyleIfeoluwa Adekoya, Adewale Obadina, Judith Phoku, Obinna Nwinyi, Patrick Njobeh. Contamination of fermented foods in Nigeria with fungi. LWT - Food Science and Technology. 2017; 86 ():76-84.
Chicago/Turabian StyleIfeoluwa Adekoya; Adewale Obadina; Judith Phoku; Obinna Nwinyi; Patrick Njobeh. 2017. "Contamination of fermented foods in Nigeria with fungi." LWT - Food Science and Technology 86, no. : 76-84.
Obinna C. Nwinyi; Yemisi A. Olawore. Biostimulation of spent engine oil contaminated soil using Ananas comosus and Solanum tuberosum peels. Environmental Technology & Innovation 2017, 8, 373 -388.
AMA StyleObinna C. Nwinyi, Yemisi A. Olawore. Biostimulation of spent engine oil contaminated soil using Ananas comosus and Solanum tuberosum peels. Environmental Technology & Innovation. 2017; 8 ():373-388.
Chicago/Turabian StyleObinna C. Nwinyi; Yemisi A. Olawore. 2017. "Biostimulation of spent engine oil contaminated soil using Ananas comosus and Solanum tuberosum peels." Environmental Technology & Innovation 8, no. : 373-388.
The quest for competent degraders of recalcitrant polynuclear aromatic hydrocarbons (PAHs) for use in sustainable bioremediation technology has justified the execution of this work. In this study, three bacterial strains (FB-1, FB-2 and FB-3) were isolated from a former industrial site in Bloomington, Indiana. The catabolic versatility of these obtained strains was evaluated on some selected PAH-naphthalene, anthracene, fluoranthene and pyrene. Using the 16S rRNA sequencing analyses, our strains belonged to the family Firmicutes whereby strain FB-1 was identified as Lysinibacillus sp. FB-1, strain FB-2 as Bacterium FB-2 and strain FB-3 as Lysinibacillus fusiformis FB-3. The biodegradation of the selected PAHs was determined using gas chromatography, and the calculated percentage utilization of the selected PAHs varied between 97 and 4%. We further determined the mean biodegradation rates for fluoranthene when supplemented with molasses. The mean biodegradation rates were between (mg L−1) 0.214 ± 0.006 and 0.318 ± 0.002, while MS-fluoranthene only ranged from (mg L−1) 0.210 ± 0.056 to 0.437 ± 0.176. However, with ANOVA at 5% (P < 0.05) there seemed to be no significant difference in the mean biodegradation rates between both media. These findings may have practical and ecological prospects in designing and improving bioremediation of polycyclic aromatic hydrocarbon contaminated sites.
Obinna C. Nwinyi; Olukayode O. Amund. Biodegradation of Selected Polycyclic Aromatic Hydrocarbons by Axenic Bacterial Species Belonging to the Genera Lysinibacillus and Paenibacillus. Iranian Journal of Science and Technology, Transactions A: Science 2017, 41, 577 -587.
AMA StyleObinna C. Nwinyi, Olukayode O. Amund. Biodegradation of Selected Polycyclic Aromatic Hydrocarbons by Axenic Bacterial Species Belonging to the Genera Lysinibacillus and Paenibacillus. Iranian Journal of Science and Technology, Transactions A: Science. 2017; 41 (3):577-587.
Chicago/Turabian StyleObinna C. Nwinyi; Olukayode O. Amund. 2017. "Biodegradation of Selected Polycyclic Aromatic Hydrocarbons by Axenic Bacterial Species Belonging to the Genera Lysinibacillus and Paenibacillus." Iranian Journal of Science and Technology, Transactions A: Science 41, no. 3: 577-587.
The deficiency in affordable nourishing foods for neonates after weaning has been major concern in developing countries and this has contributed to increased malnutrition rate, illnesses and even children’s mortality rate. The addition of wheat offal to traditionally affordable ‘Ogi’ as an alternative approach for combating the threats of protein malnutrition in neonates was explored in this work. Wheat offal was added at increasing levels of 0, 20, 40, 60, 80 and 100 w/w% as fortifying feed with prepared maize-Ogi as meal. Proximate analysis, pasting characteristics, sensory evaluation, nutritive and functional properties of the resulting blends was evaluated using standard methods. Results of proximate analysis showed an increased protein (2.787 – 34.064%), fat (2.282 – 9.015%) and ash (8.913 – 17.171%) contents with increased level of wheat offal from 20 to 100 w/w addition, while decreased carbohydrate content was observed with increased addition of wheat offal. The water absorption capacity increased also with level of wheat offal addition. The pasting characteristics result indicated up to 40% fortification of maize-Ogi with wheat offal as stable blend against retrogradation in terms of setback value and viscosity. The 40% level of fortification was preferred in terms of quality index of taste, texture, color, sourness and appearance. In conclusion, the nutritional indices investigated indicated addition level of wheat offal to 40% limit to solve protein-energy malnutrition and food security issues in neonates.
Kolawole Oluseyi Ajanaku; Olabisi Ademosun; Tolutope Oluwasegun Siyanbola; Anuoluwa Abimbola Akinsiku; Christiana Oluwatoyin Ajanaku; Obinna Nwinyi. Improving Nutritive Value of Maize-Ogi as Weaning Food Using Wheat Offal Addition. Current Research in Nutrition and Food Science Journal 2017, 5, 206 -213.
AMA StyleKolawole Oluseyi Ajanaku, Olabisi Ademosun, Tolutope Oluwasegun Siyanbola, Anuoluwa Abimbola Akinsiku, Christiana Oluwatoyin Ajanaku, Obinna Nwinyi. Improving Nutritive Value of Maize-Ogi as Weaning Food Using Wheat Offal Addition. Current Research in Nutrition and Food Science Journal. 2017; 5 (3):206-213.
Chicago/Turabian StyleKolawole Oluseyi Ajanaku; Olabisi Ademosun; Tolutope Oluwasegun Siyanbola; Anuoluwa Abimbola Akinsiku; Christiana Oluwatoyin Ajanaku; Obinna Nwinyi. 2017. "Improving Nutritive Value of Maize-Ogi as Weaning Food Using Wheat Offal Addition." Current Research in Nutrition and Food Science Journal 5, no. 3: 206-213.
Aflatoxin (AF) contamination presents one of the most insidious challenges to combat, in food safety. Its adulteration of agricultural commodities presents an important safety concern as evident in the incidences of its health implication and economic losses reported widely. Due to the overarching challenges presented by the contamination of AFs in foods and feeds, there is an urgent need to evolve cost-effective and competent strategies to combat this menace. In our review, we tried to appraise the cost-effective methods for decontamination of AFs. We identified the missing links in adopting microbial degradation as a palliative to decontamination of AFs and its commercialization in food and feed industries. Cogent areas of further research were also highlighted in the review paper.
Oluwafemi Adebo; Patrick Njobeh; Sefater Gbashi; Obinna Nwinyi; Vuyo Mavumengwana. Review on microbial degradation of aflatoxins. Critical Reviews in Food Science and Nutrition 2017, 57, 3208 -3217.
AMA StyleOluwafemi Adebo, Patrick Njobeh, Sefater Gbashi, Obinna Nwinyi, Vuyo Mavumengwana. Review on microbial degradation of aflatoxins. Critical Reviews in Food Science and Nutrition. 2017; 57 (15):3208-3217.
Chicago/Turabian StyleOluwafemi Adebo; Patrick Njobeh; Sefater Gbashi; Obinna Nwinyi; Vuyo Mavumengwana. 2017. "Review on microbial degradation of aflatoxins." Critical Reviews in Food Science and Nutrition 57, no. 15: 3208-3217.
The goal of this investigation was to isolate competent polynuclear aromatic hydrocarbons degraders that can utilize polynuclear aromatic hydrocarbons of former industrial sites at McDoel Switchyard in Bloomington, Indiana. Using conventional enrichment method based on soil slurry, we isolated, screened and purified two bacterial species strains PB1 and PB2. Applying the ribotyping technique using the 16S rRNA gene analysis, the strains were assigned to the genus Pseudomonas (Pseudomonas plecoglossicida strain PB1 and Pseudomonas sp. PB2). Both isolates showed promising metabolic capacity on pyrene sprayed MS agar plates during the preliminary investigations. Using time course studies in the liquid cultures at calculated concentrations 123, 64, 97 and 94 ppm for naphthalene, chrysene, fluroanthene and pyrene, P. plecoglossicida strain PB1 and Pseudomonas sp. PB2 showed partial utilization of the polynuclear aromatic hydrocarbons. Naphthalene was degraded between 26% and 40%, chrysene 14% and 16%, fluroanthene 5% and 7%; pyrene 8% and 13% by P. plecoglossicida strain PB1 and Pseudomonas sp. PB2 respectively. Based on their growth profile, we developed a model R2 = 1 to predict the degradation rate of slow polynuclear aromatic hydrocarbon-degraders where all the necessary parameters are constant. From this investigation, we confirm that the former industrial site soil microbial communities may be explored for the biorestoration of the industrial site.
Obinna C. Nwinyi; Oluseyi Ajayi; Olukayode O. Amund. Degradation of polynuclear aromatic hydrocarbons by two strains of Pseudomonas. Brazilian Journal of Microbiology 2016, 47, 551 -562.
AMA StyleObinna C. Nwinyi, Oluseyi Ajayi, Olukayode O. Amund. Degradation of polynuclear aromatic hydrocarbons by two strains of Pseudomonas. Brazilian Journal of Microbiology. 2016; 47 (3):551-562.
Chicago/Turabian StyleObinna C. Nwinyi; Oluseyi Ajayi; Olukayode O. Amund. 2016. "Degradation of polynuclear aromatic hydrocarbons by two strains of Pseudomonas." Brazilian Journal of Microbiology 47, no. 3: 551-562.
In this study, we investigated the feasibility of using Psidium guajava, Mangifera indica and Ocimum gratissimum leaf extracts in preventing Escherichia coli biofilm formation. The plants extractions were done with methanol under cold extraction. The various concentrations 5.0, 10.0 and 20.0 mg mL(-1) were used to coat 63 catheters under mild heat from water bath. Biofilm formation on the catheter was induced using cultures of E. coli. Biofilm formation was evaluated using aerobic plate count and turbidity at 600 nm. From the obtained results, Psidium guajava, Mangifera indica and Ocimum gratissimum delayed the onset of biofilm formation for a week. Ocimum gratissimum coated catheter had the highest inhibitory effect at 5.0, 10.0 and 20.0 mg mL(-1) with bacterial count ranging from 2.2 x 10(5)-7.0 x 10(4) and 5.7 x 10(5)-3.7 x10(5) for 120 and 128 h, respectively. The Psidium guajava coated catheter had the lowest inhibitory effect at 5.0, 10.0 and 20.0 mg mL(-1), with bacterial count ranging between 4.3 x 10(5)-1.9 x 10(3) and 7.7 x 10(5)-3.8 x 10(5) for 120 and 128 h, respectively. Despite the antimicrobial activities, the differences in the activity of these plant extracts were statistically not significant (p < 0.05).
T.D. Adesina; Obinna Nwinyi; J.A.O. Olugbuyiro. Prevention of Bacterial Biofilms Formation on Urinary Catheter by Selected Plant Extracts. Pakistan Journal of Biological Sciences 2015, 18, 67 -73.
AMA StyleT.D. Adesina, Obinna Nwinyi, J.A.O. Olugbuyiro. Prevention of Bacterial Biofilms Formation on Urinary Catheter by Selected Plant Extracts. Pakistan Journal of Biological Sciences. 2015; 18 (2):67-73.
Chicago/Turabian StyleT.D. Adesina; Obinna Nwinyi; J.A.O. Olugbuyiro. 2015. "Prevention of Bacterial Biofilms Formation on Urinary Catheter by Selected Plant Extracts." Pakistan Journal of Biological Sciences 18, no. 2: 67-73.
The bacterial diversity in a diesel contaminated tropical soil was investigated using diesel oxidation in gradient cultures dynamics (pH and OD) of the pure cultures. The diesel dependent growths of these isolates were assessed for 15 days by monitoring the gradient fluxes in the pH and Optical density OD of the media. Results showed an increase in OD as well as fluctuations in pH values. The mean OD data obtained was 0.515- 1.187 with pH of 6.95-7.2. From the morphological and biochemical characterization and comparison with respect to the standard references, the isolates S1P1, S3P3, S2P2, S2P1,and S3P2 were presumably the members of the genera Bacillus, Pseudomonas and Mycobacterium species. From the study, it was apparent that the tropical ecosystems contained unique organisms with the ability to deal with diesel contamination.
Obinna Chukwuemeka Nwinyi; Ijeoma Akudo Kanu; Ayano Tunde; Kolawole Oluseyi Ajanaku. Characterization of diesel degrading bacterial species from contaminated tropical ecosystem. Brazilian Archives of Biology and Technology 2014, 57, 789 -796.
AMA StyleObinna Chukwuemeka Nwinyi, Ijeoma Akudo Kanu, Ayano Tunde, Kolawole Oluseyi Ajanaku. Characterization of diesel degrading bacterial species from contaminated tropical ecosystem. Brazilian Archives of Biology and Technology. 2014; 57 (5):789-796.
Chicago/Turabian StyleObinna Chukwuemeka Nwinyi; Ijeoma Akudo Kanu; Ayano Tunde; Kolawole Oluseyi Ajanaku. 2014. "Characterization of diesel degrading bacterial species from contaminated tropical ecosystem." Brazilian Archives of Biology and Technology 57, no. 5: 789-796.
K.O. Ajanaku; F.A. Dawodu; Obinna Nwinyi. Functional and Nutritional Properties of Spent Grain Enhanced Cookies. American Journal of Food Technology 2011, 6, 763 -771.
AMA StyleK.O. Ajanaku, F.A. Dawodu, Obinna Nwinyi. Functional and Nutritional Properties of Spent Grain Enhanced Cookies. American Journal of Food Technology. 2011; 6 (9):763-771.
Chicago/Turabian StyleK.O. Ajanaku; F.A. Dawodu; Obinna Nwinyi. 2011. "Functional and Nutritional Properties of Spent Grain Enhanced Cookies." American Journal of Food Technology 6, no. 9: 763-771.
A variety of the title pyrazolylquinoxalinone derivatives are synthesized by condensation reactions of hydrazinoquinoxalinone (IV) with β‐diketones, β‐keto esters of cyanoacetate.
Olayinka O. Ajani; Craig A. Obafemi; Chinwe O. Ikpo; Kehinde O. Ogunniran; Obinna C. Nwinyi. ChemInform Abstract: Microwave-Assisted Synthesis and Antibacterial Activity of Some Pyrazol-1-ylquinoxalin-2(1H)-one Derivatives. ChemInform 2010, 41, 1 .
AMA StyleOlayinka O. Ajani, Craig A. Obafemi, Chinwe O. Ikpo, Kehinde O. Ogunniran, Obinna C. Nwinyi. ChemInform Abstract: Microwave-Assisted Synthesis and Antibacterial Activity of Some Pyrazol-1-ylquinoxalin-2(1H)-one Derivatives. ChemInform. 2010; 41 (33):1.
Chicago/Turabian StyleOlayinka O. Ajani; Craig A. Obafemi; Chinwe O. Ikpo; Kehinde O. Ogunniran; Obinna C. Nwinyi. 2010. "ChemInform Abstract: Microwave-Assisted Synthesis and Antibacterial Activity of Some Pyrazol-1-ylquinoxalin-2(1H)-one Derivatives." ChemInform 41, no. 33: 1.
Olayinka O. Ajani; Obinna C. Nwinyi. ChemInform Abstract: Microwave-Assisted Synthesis and Evaluation of Antimicrobial Activity of 3-{3-(s-Aryl and s-Heteroaromatic)acryloyl}-2H-chromen-2-one Derivatives. ChemInform 2010, 41, 1 .
AMA StyleOlayinka O. Ajani, Obinna C. Nwinyi. ChemInform Abstract: Microwave-Assisted Synthesis and Evaluation of Antimicrobial Activity of 3-{3-(s-Aryl and s-Heteroaromatic)acryloyl}-2H-chromen-2-one Derivatives. ChemInform. 2010; 41 (24):1.
Chicago/Turabian StyleOlayinka O. Ajani; Obinna C. Nwinyi. 2010. "ChemInform Abstract: Microwave-Assisted Synthesis and Evaluation of Antimicrobial Activity of 3-{3-(s-Aryl and s-Heteroaromatic)acryloyl}-2H-chromen-2-one Derivatives." ChemInform 41, no. 24: 1.