Patricia Folakemi Omojasola

@unilorin.edu.ng

Professor, Faculty of Life Sciences
Dean, Faculty of Life Sciences
University of Ilorin

Professor in the Department of Microbiology, University of Ilorin, Nigeria. Dean, Faculty of Life Sciences 2022- to date

EDUCATION

Ph.D. (Ilorin) Microbiology 1992

RESEARCH, TEACHING, or OTHER INTERESTS

Agricultural and Biological Sciences, Food Science, Biotechnology, Applied Microbiology and Biotechnology

Scopus Publications

764

Scholar Citations

Scholar h-index

Scholar i10-index

Scopus Publications

Characterization of Silver Nanoparticles Biosynthesized using Keratinase from Aspergillus species and their Antibacterial Activity against Clinical Pathogens
Frank O. Otuyelu, Olusoji O. Adebisi, Patricia F. Omojasola, Ridwan T. Azeez, Zainab B. Abdulsalam, Oluwafemi B. Daramola, and Bolanle A. Akinsanola
Springer Science and Business Media LLC

Response surface methodology optimisation enhancing lactic acid production from Prosopis africana pods by Rhizopus oryzae
El-Imam Amina Ahmed, Mardhiyah A. Sanusi, Eromosele Ighalo, Mushafau A. Oke, and Patricia F. Omojasola
World Researchers Associations
Microbial fermentation of lignocellulosic biomass into lactic acid (LA) has received considerable attention because it ensures the valorisation of wastes and reduces dependence on fossil sources. First, the proximate and phytochemical compositions of Prosopis africana pods (PAP) were determined. Previous biologically-pretreated pods of Prosopis africana were then saccharified using dilute acid hydrolysis following a full factorial design. The factors optimized were acid type (HCl and H2SO4), acid concentration (1 %, 3 % and 5 %), solid loading ratio (5 %, 10 % and 20 %) and reaction time (15, 30 and 60 minutes). Several Rhizopus oryzae isolates were screened for LA production and the most prolific was molecularly identified. The factors affecting LA yield from PAP hydrolysate were screened using a half-factorial design. The significant factors were then optimised using Box-Behnken Design of Response Surface Methodology (RSM). The proximate analysis showed high levels of protein, lipid, ash and carbohydrates. The phytochemical analysis of PAP revealed the presence of flavonoids, alkaloids, saponins, phenols, tannins, glycosides and terpenoids. The hydrolysis conditions of 3 % HCl, 20 % solid loading and 15 minutes hydrolysis time yielded the highest reducing sugars of 42.5 g/L. The most promising isolate, identified as R. oryzae strain AK-22, produced 19.7 g/L after RSM optimization, a 38.1 % increase over yields from non-optimised conditions. These findings are on the biotechnological production of LA from the pods of Prosopis africana, an abundant yet under-utilised tree crop.

Enzyme and Biosurfactant Production by Exopolysaccharide Producing Bacteria Isolated from Cassava Peel Heaps
J. A. Amao, P. F. Omojasola, A. A. Ayandele, and A. G. Adewoyin
Allerton Press

Bioethanol Production from Biologically Pretreated Prosopis africana Pods using Pichia kudriavzevii SY4
Hashemite University

Utilization of Pachysolen tannophilus and Pichia kudriavzevii for the production of xylitol on undetoxified corn cob hydrolysates

Phosphate solubilization potential of indigenous rhizosphere fungi and their biofertilizer formulations

Comparative 16S rDNA metagenomics study of two samples of cassava peel heap from Nigeria and India
John Ayobami Amao, Madhumita Barooah, and Patricia Folakemi Omojasola
Springer Science and Business Media LLC

Isolation and characterization of some exopolysaccharide producing bacteria from cassava peel heaps
John Ayobami AMAO, Patricia Folakemi Omojasola, and Madhumita Barooah
Elsevier BV

Submerged fermentation of orange albedo to produce gibberellic acid using Fusarium moniliforme and Aspergillus niger

Biomolecular characterization, identification, enzyme activities of molds and physiological changes in sweet potatoes (Ipomea batatas) stored under controlled atmospheric conditions
C. O. Oladoye, I. F. Connerton, R. M. O. Kayode, P. F. Omojasola, and I. B. Kayode
Zhejiang University Press
Microbial attacks during storage are one of the primary causes of product deterioration, and can limit the process of prolonging the shelf-life of harvested food. In this study, sweet potatoes were stored at temperatures of 13, 21, and 29 °C for 4 weeks. Samples were collected during storage and plated on potato dextrose agar, from which axenic mold cultures were obtained and identified using 26S rRNA gene sequences. Physiological changes of potato tubers were assessed with respect to pathogenicity, enzyme activity, and atmospheric storage conditions. Six fungal species were identified, namely Penicillium chrysogenum (P. rubens), P. brevicompactum, Mucor circinelloides, Cladosporium cladosporiodes, P. expansum, and P. crustosum. The following fungal isolates, namely P. expansum, P. brevicompactum, and Rhizopus oryzae, were recovered from the re-infected samples and selected according to their levels of enzyme activity. This study revealed high levels of activity for cellulase and pectinase, which were most notable during the initial three days of testing, and were followed by a steady decrease (P<0.05). Polygalacturonase activity was prominent with values ranging from 12.64 to 56.79 U/mg (P. expansum) and 18.36 to 79.01 U/mg (P. brevicompactum). Spoilage was obvious in the control group, which had a 100% decay at the end of the experimental period compared with samples treated with iprodione and sodium hypochlorite, in which the decay rates were 5% and 55%, respectively. The data for the iprodione- and sodium hypochlorite-treated samples at the end of the 3-month storage period showed that they were significantly different (P=0.041), with the sodium hypochlorite-treated samples producing twice the rate of infection compared to the iprodione-treated samples. The comparative rate of the progression of decay in the treated samples can be expressed as iprodione<sodium hypochlorite<control. This study demonstrates that sweet potato tissue damage is due to the activities of microbial enzymes and, in particular, the pectinases of the organisms isolated from the infected potato tissues, and suggests the advantages of utilizing iprodione as a curing agent for potato tubers before storage.

Synthesis, Characterization, Crystal Structure and Antimicrobial Evaluation of a Novel -M-X-M-X- Type Infinite Chain 1D Cu(II) Complex with Eflornithine Hydrochloride Hydrate as Ligand
Joshua A. Obaleye, Adedibu C. Tella, Wahab A. Osunniran, Nzikahyel Simon, and Patricia F. Omojasola
Springer Science and Business Media LLC

Cellulase production by Trichoderma longi, Aspergillus niger and Saccharomyces cerevisae cultured on waste materials from orange
P.F. Omojasola and O.P. Jilani
Science Alert
The wastes materials from the sweet orange (Citrus sinensis) were used as substrate for the production of cellulase. The rind, the pericarp or albedo and the pulp were hydrolyzed by cellulolytic enzymes of Trichoderma longibrachiatum, Aspergillus niger and Saccharomyces cerevisiae after they were treated with alkali and steam. The amount of glucose released from the substrates following the secretion of cellulase by the three microorganisms was measured. The orange wastes released amounts of glucose ranging from 0.76-0.96 mg mL(-1) by Trichoderma longibrachiatum, 0.90-1.08 mg mL(-1) by A. niger and 0.60-0.76 mg mL(-1) by S. cerevisiae after five days of fermentation. The conditions of the fermentation were then varied to determine their effect on cellulase production. Fermentation parameters varied were time, pH, substrate concentration, temperature and inoculum size. After this, conditions that produced highest amounts of glucose were combined in an optimization experiment. Glucose production under optimized conditions were 0.94 mg mL(-1) by T. longibrachiatum, 0.83 mg mL(-1) by A. niger and 0.67 mg mL(-1) by S. cerevisae. The activity of the test organisms' cellulase against CMC on the orange wastes was also determined with T. longibrachiatum producing 3.86 mg mL(-1), A. niger 2.94 mg mL(-1) and S. cerevisiae 2.30 mg mL(-1) glucose amounts all from orange pulp.

RECENT SCHOLAR PUBLICATIONS

Characterization of Silver Nanoparticles Biosynthesized using Keratinase from Aspergillus species and their Antibacterial Activity against Clinical Pathogens
FO Otuyelu, OO Adebisi, PF Omojasola, RT Azeez, ZB Abdulsalam, ...
BioNanoScience 15 (1), 1-9 2025

Response surface methodology optimization enhancing lactic acid production from Prosopis africana pods using Rhizopus oryzae
PF Ahmed El Imam, A., Ighalo, E., Sanusi, M., Oke, M.A. and Omojasola
Research Journal of Biotechnology 19 (1), 91-104 2024

Enzyme and Biosurfactant Production by Exopolysaccharide Producing Bacteria Isolated from Cassava Peel Heaps.
AG Amao, J.A., Omojasola, P.F., Ayandele, A.A. and Adewoyin
Moscow University Biological Sciences Bulletin 78 (4), 232-240 2023

Isolation, Identification and Screening of Humic Acid Producing Fungi from Soil Environment of Oil palm (Elaeisguineensis) Associated with Empty Fruit Bunches
HM Kawata, PF Omojasola, AE Ajiboye, MR Adedayo, SI Bale
UMYU Journal of Microbiology Research 8 (2), 165-173 2023

Bioethanol Production from Biologically Pretreated Prosopis africana Pods using Pichia kudriavzevii SY4.
AA El-Imam, E Ighalo, M Sanusi, MA Oke, PF Omojasola
Jordan Journal of Biological Sciences 15 (5) 2022

Effects of evaporative cooling storage on microbiological and nutritional quality of Telfairia occidentalis Hook. f. and Amaranthus hybridus L.
PF Omojasola, IG Adarabierin, MA Oke
Ife Journal of Science 24 (2), 237-250 2022

Extension of the shelf life of tomato fruit (Solanum lycopersicum) using wood ash
PF Omojasola, RA Abdulsalam, MA Oke
Thai Journal of Agricultural Science 55 (3), 161− 174-161− 174 2022

Utilization of Pachysolen tannophilus and Pichia kudriavzevii for the production of xylitol on undetoxified corn cob hydrolysates.
PF Jolayemi, O., Oke, M.A., Rocha-Meneses, L. and Omojasola
Agronomy Research 20 (1), 188-199, https://doi.org/10.15159/AR.22. 2022

Phosphate solubilization potential of indigenous rhizosphere fungi and their biofertilizer formulations.
PF Balogun, D.A., Oke, M.A., Rocha-Menenses, L., Fawole, O.B. and Omojasola
Agronomy Research 20 (https://doi.org/10.15159/AR.21.163), 40-55 2022

Microbiological quality of fresh tilapia raised in ponds fertilized with raw and sterilized cow dung manures
FS Omojowo, PF Omojasola
FISON 2021

Production of Collagenases by Aspergillus terreus and Aspergillus flavus Isolates Using Scales of Tilapia and Croaker Fishes.
PF OMOJASOLA, F ADENIRAN, BK Saliu, MO KAZEEM
Cameroon Bioscience Society. 2020

Production of Collagenase by Aspergillus niger and Aspergillus terreus Isolates using Scales of Tilapia and Croaker Fishes
MO Omojasola, P.F., Adeniran, F., Saliu, B.K. and Kazeem
Cameroon Journal of Biological and Biochemical Sciences 28 (2), 131-145 2020

Comparative 16S rDNA metagenomics study of two samples of cassava peel heap from Nigeria and India
JA Amao, M Barooah, PF Omojasola
3 Biotech 9 (11), 418 2019

Isolation and characterization of some exopolysaccharide producing bacteria from cassava peel heaps
JA AMAO, PF Omojasola, M Barooah
Scientific African 4, e00093 2019

Physiological and bacteriological profile of the fish Clarias gariepinus (Siluriformes: Clariidae) chronically exposed to different concentrations of municipal waste leachate
OD Owolabi, PF Omojasola, FJ Abioye, OP Aina
Cuadernos de Investigacin UNED 11 (2), 182-197 2019

Submerged Fermentation of Jatropha curcas Seedcake in Production of Itaconic Acid by Aspergillus niger and Aspergillus terreus
P OKWECHIME, P OMOJASOLA
Egyptian Society of Biological Sciences 2019

Laboratory Practicals in Microbiology II
AB Olayemi, A Sani, GP Oyeyiola, PF Omojasola, MO Kolawole, ...
The Department of Microbiology, University of Ilorin, Ilorin 2018

Gibberellic acid production by Fusarium moniliforme and Aspergillus niger using submerged fermentation of banana peel
PF Omojasola, DO ADEJORO
Notulae Scientia Biologicae 10 (1), 60-67 2018

Submerged Fermentation of Orange Albedo to Produce Gibberellic Acid Using Fusarium moniliforme and Aspergillus niger
DO Omojasola, P.F. and Adejoro
Jordan Journal of Biological Sciences 11 (2), 187-194 2018

Submerged Fermentation of Jatropha curcas Seedcake to Produce Oxalic Acid by Aspergillus niger and Aspergillus terreus
POO P.F. Omojasola
actaSATECH 10 (1), 37-48 2018

MOST CITED SCHOLAR PUBLICATIONS

Cellulase production by some fungi cultured on pineapple waste
PF Omojasola, OP Jilani, SA Ibiyemi
Nature and science 6 (2), 64-79 2008
Citations: 155

The antibacterial activity of the leaf extracts of Anacardium occidentale and Gossypium hirsutum against some selected microorganisms
PF Omojasola, S Awe
Biosci Res Commun 16 (1), 25-28 2004
Citations: 81

Cellulase production by Trichoderma longi, Aspergillus niger and Saccharomyces cerevisae cultured on waste materials from orange
PF Omojasola, OP Jilani
Pakistan Journal of Biological Sciences 11 (20), 2382-2388 2008
Citations: 72

The effect of different concentrations of ginger on the quality of smoked dried catfish (Clarias gariepinus)
GL Idris, FS Omojowo, PF Omojasola, CO Adetunji, EO Ngwu
Nature and Science 8 (4), 59-63 2010
Citations: 49

Cellulase production by Trichoderma longi, Aspergillus niger and Saccharomyces cerevisae cultured on plantain peel.
PF Omojasola, OP Jilani
2009
Citations: 45

Microbiological quality of fresh catfish raised in ponds fertilized with raw sterilized poultry manures
FS Omojowo, PF Omojasola
FISON 2013
Citations: 26

Isolation and characterization of some exopolysaccharide producing bacteria from cassava peel heaps
JA AMAO, PF Omojasola, M Barooah
Scientific African 4, e00093 2019
Citations: 23

Antibiotic resistance pattern of bacterial pathogens isolated from poultry manure used to fertilize fish ponds in new Bussa, Nigeria
F Omojowo, F Omojasola
Albanian Journal of Agricultural Sciences 12 (1), 81 2013
Citations: 20

A comparative study of the antibacterial activity of Piliostigma reticulatum bark extract with some antibiotics
S Awe, PF Omojasola
Ethnobotanical leaflets 2009 (9), 11 2009
Citations: 20

Evaluation of citric acid and potassium sorbate as preservatives on the safety and shelf-life of smoked catfish
FS Omojowo, PF Omojasola, GL Idris, JA Ihuahi
Nat. Sci 7 (11), 1-8 2009
Citations: 20

Antibiotic resistance pattern of bacterial pathogens isolated from Cow dung used to fertilize Nigerian fish ponds
FS OMOJOWO, FP OMOJASOLA
Notulae Scientia Biologicae 5 (1), 15-19 2013
Citations: 17

Phytochemical screening of some selected tropical African Mosses
PO Fatoba, PF Omojasola, S Awe, FG Ahmed
Nigerian Society for Experimental Biology (NISEB) Journal 3 (2), 49-52 2003
Citations: 17

Effect of brining on the microbial quality and safety of smoked catfish
FS Omojowo, PF Omojasola, MO Kolawole, EO Ngwu, GB Oluborode, ...
New York Science Journal 3 (6), 20-26 2010
Citations: 16

The Production of Itaconic Acid from Sweet Potato Peel Using Aspergillus niger and Aspergillus terreus.
PF Omojasola, EA Adeniran
Albanian Journal of Agricultural Sciences 13 (4) 2014
Citations: 13

Microbial quality of citric acid as preservatives in smoked catfish (Clarias gariepinus)
FS Omojowo, PF Omojasola, JA Ihuahi
J. Bio. and Env. Sci 5 (3), 130-134 2008
Citations: 12

Gibberellic acid production by Fusarium moniliforme and Aspergillus niger using submerged fermentation of banana peel
PF Omojasola, DO ADEJORO
Notulae Scientia Biologicae 10 (1), 60-67 2018
Citations: 10

Synthesis, Characterization, Crystal Structure and Antimicrobial Evaluation of a Novel --M-X-M-X-- Type Infinite Chain 1D Cu(II) Complex with Eflornithine Hydrochloride
OPF Obaleye JA, Tella AC, Osunniran WA, Simon N
Journal of Inorganic and Organometallic Polymers and Materials 24 (5), 827-835 2014
Citations: 10

Antibacterial Effect of Honey on Bacterial Isolated From Infected Wounds in Ilorin, Nigeria
PF Omojasola
NISEB Journal 2 (2), 109-112 2002
Citations: 10