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I. A. Onyimba

Publications (7)

Evaluation of Partial Substitution of Cocoyam Starch as Alternative Gelling Agent in Culture Media for Cultivation of Fungi

I. A. Onyimba, M. M. Dashen, C. E. Odu, I. A. Nnebechukwu, A. I. Njoku, M. O. Job, E. Dakiyes, A. C. Ngene & O. J. Egbere · Asian Journal of Biotechnology and Bioresource Technology · 2023

Aim: In view of high cost of agar in Nigeria, the study evaluated the suitability of cocoyam starch and cocoyam starch-agar blends as alternative gelling agents in mycological culture media. Methodology: Media characteristics and ability of the media to support growth and sporula...

Open access Research Article 10.9734/ajb2t/2023/v9i1175

Screening of Selected Soil Environments of Jos North Local Government Area for Lipase-Producing Fungi

I. A. Onyimba, O. J. Egbere, C. E. Odu, A. I. Ogbonna, J. J. Ndzembuin, A. C. Ngene, D. C. Isaac & I. C. Isaac · Journal of Advances in Microbiology · 2022

Aim: Consequent from increased demands for lipase enzymes for various purposes, the soil environment of Jos North LGA of Plateau State, Nigeria was surveyed for lipase-producing fungi. Materials and Methods: Soil samples (300 g each) were collected randomly in triplicates from fi...

Open access Research Article 10.9734/jamb/2022/v22i630464

Bioconversion of Sweet Potato Leaves to Animal Feed

I. A. Onyimba, A. I. Ogbonna, J. O. Egbere, H. L. Njila & C. I. C. Ogbonna · Annual Research & Review in Biology · 2015

Background: The high cost of conventional animal feed ingredients in Nigeria has made it necessary to search for alternative local sources of feed. Crop residues including sweet potato leaves abound in Nigeria. These have been explored as feed sources. The ability of microorganis...

Open access Research Article 10.9734/ARRB/2015/19290

Antibiotic Susceptibility Profile of Bacterial Pathogens and Health Hazards Associated with Municipal Solid Wastes in Gboko Town, Nigeria

W. N. Hemen, C. G. Ohaegbu, I. A. Onyimba, C. E. Odu, A. C. Ngene, M. M. A. Danladi, M. M. Dashen, E. G. Ochiheche, E. E. Entonu, A. O. Ogaji & O. J. Egbere · Journal of Advances in Microbiology · 2022

Municipal solid wastes constitute one of the most challenging health and environmental hazards facing urbanizations in African countries. This study was therefore carried out on antibiotics susceptibility profile of bacterial pathogens and possible health hazards that could be as...

Open access Research Article 10.9734/jamb/2022/v22i10676

Keratin Degradation by Penicillium purpurogenum Isolated from Tannery Soils in Jos, Nigeria

P. O. Nwadiaro, A. Chuku, I. A. Onyimba, I. A. Nwaukwu, A. Ogbonna & D. A. Adekojo · Microbiology Research Journal International · 2015

Background: Tannery soils are very rich in keratinous materials such as fur, wool and hair that are by-products of the tanning industry where hides and skins are processed. A keratinase producing fungus belonging to the genus Penicillium was isolated from soils containing tannery...

Open access Research Article 10.9734/BMRJ/2015/16339

Optimization Studies on Extracellular Protease Production by Aspergillus niger and Aspergillus terreus Using Skim Milk Casein as Substrate

F. E. Ekedegba, A. I. Ogbonna, C. T. Okoye, U. S. A. Ogbonna, I. A. Onyimba & J. M. Madu · Journal of Advances in Biology & Biotechnology · 2022

Aim: Proteases are proteolytic enzymes that have a wide range of applications in the industrial sectors. This study investigated the production and optimization of protease by protease-producing fungi, (Aspergillus niger and A. terreus) using skim milk casein as substrate. Materi...

Open access Research Article 10.9734/jabb/2022/v25i730291

Optimization of Amylase Production in Three Fungal Species

F. E. Ekedegba, A. I. Ogbonna, B. M. W. Nwibari, C. T. Okoye, U. S. A. Ogbonna, I. A. Onyimba, J. M. Madu & A. I. Njoku · Asian Journal of Biochemistry, Genetics and Molecular Biology · 2022

Aim: Amylase is an important enzyme that is employed in starch processing industries, used in the hydrolysis of polysaccharides such as starch into simple sugar constituents. In this study, we investigated the abilities of several isolated amylolytic soil fungi to produce amylase...

Open access Research Article 10.9734/ajbgmb/2022/v12i4266