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A. I. Ogbonna

Publications (5)

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

Mycoflora of Crude Oil Polluted Soils of Ukwa West of Abia State Nigeria

J. M. Madu, A. I. Ogbonna & C. I. C. Ogbonna · South Asian Journal of Research in Microbiology · 2021

Aim: Bioremediation of soil play a critical role in removing pollutants from crude oil polluted soil. To investigate the mycoflora of crude oil polluted area of Ukwa West Local Government in the present Abia State. Methodology: Portions of the soil samples collected from three (3...

Open access Research Article 10.9734/sajrm/2021/v11i130240

Effects of Process Parameters on the Activities of Enzymes by Different Species of Aspergillus in Crude Polluted Soil Sites

J. M. Madu, A. I. Ogbonna & C. I. C. Ogbonna · Biotechnology Journal International · 2021

The effects of temperature, pH and incubation time on amylase, protease and cellulase activity by different species of Aspergillus in crude oil polluted soil sites in Nigeria were studied. Incubation period, Optimal pH values and temperatures for the enzymes produced by the diffe...

Open access Research Article 10.9734/bji/2021/v25i330140

Quantitative Assessment of Hydrolytic Potentials of Fungal Isolates from Crude Oil Impacted Soil Ecosystem in Varied Media Formulations

J. M. Madu, A. I. Ogbonna & C. I. C. Ogbonna · Journal of Advances in Microbiology · 2020

Background of the Study: A quantitative assessment of different enzymes that produce the best of hydrolyses of starch, skim milk, carboxymathlcellulose (CMC) and groundnut oil which were further assessed for the production of extracellular enzyme.  Aim: The study aimed at assessi...

Open access Research Article 10.9734/jamb/2020/v20i1130298

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