Dr. Toyin Olayemi AGBABIAKA
@unilorin.edu.ng
Associate Professor of Microbiology
University of Ilorin, Ilorin, Nigeria
Secondary School at Government Secondary School, Ilorin
B. Sc. at University of Benin Benin City
M. Sc at University of Ilorin, Ilorin
Ph.D. at University of Ilorin, Ilorin
EDUCATION
B. Sc, M. Sc, Ph>D.
RESEARCH, TEACHING, or OTHER INTERESTS
Microbiology, Water Science and Technology, Pollution, Waste Management and Disposal
Scopus Publications
Scopus Publications
Tariq Oluwakunmi Agbabiaka, Ismail Abiola Adebayo, Kamoldeen Abiodun Ajijolakewu, and Toyin Olayemi Agbabiaka
Elsevier
T. O. Agbabiaka, T. Shitu, T. O. Agbabiaka, and F. O. Otuyelu
Sri Lanka Journals Online (JOL)
Several water-related disease outbreaks have been attributed to deficiencies in water distribution systems (WDS). This study determined the relationship between biofilm-producing bacteria and their antibiotic resistance in WDS in Ilorin Metropolis, Nigeria through the assessment of the quality of water, the virulence factors possessed and susceptibility to some antibiotics. The physicochemical and bacteriological quality of the water samples were analyzed using standard methods. A total of 60 samples were collected from seven different locations within Ilorin metropolis. The pH of the water samples ranged from 6.58 – 7.22, turbidity 0.14 – 2.07 NTU and free residual chlorine ranged from 0.00 – 1.14 mg/L. A total of eleven bacteria isolates were identified by biochemical and molecular methods. They included genera of Pseudomonas, Escherichia, Staphylococcus, Klebsiella, Citrobacter, Shigella, Proteus, Yersinia and Serratia. The total bacterial counts were 1.10 – 7.20 × 102 cfu/mL. The isolates consisted of 72.7% biofilm producers using the tube method and 63.6% biofilm producers using the congo red method. Both biofilm and non-biofilm isolates displayed complete resistance to ceftriazone, amoxicillin, tetracycline, and cotrimoxazole. Biofilm producers showed stronger relationship with antibiotic resistance (p < 0.0001) than non-biofilms, thus suggesting the use of bacterial biofilm counts as indicators of water quality.
T. O. Agbabiaka, O. J. Awelogun, F. O. Otuyelu, and T. O. Agbabiaka
Sri Lanka Journals Online (JOL)
The use of honey as a remedy for microbial infections has been the reason behind recent researches on its antimicrobial activity. The research assessed the antibacterial activity of honey on Eschericia coli, Pseudomonas aeruginosa and Klebsiella pneumoniae isolated from environmental wastewater, using disc diffusion method at various concentrations of honey ranging from 62.5 - 1000 mg/ml while the minimum inhibitory concentrations (MIC) and minimum bactericidal concentrations (MBC) were determined using macro-dilution method. The zones of inhibition across the disc were measured after 24 hours of incubation. Results showed that honey has higher antibacterial activity on E. coli compared to other test isolates and also higher on E. coli than ciprofloxacin. Honey showed weaker activity on K. pneumoniae and P. aeruginosa compared to standard antibiotics. MIC was 250 mg/ml for E. coli while K. pneumoniae and P. aeruginosa were at 500 mg/ml. MBC for E. coli, K. pneumoniae and P. aeruginosa were observed at 312. 5 mg/ml, 687.5 mg/ml and 750 mg/ml respectively. Honey has promising antibacterial activity on infections caused by E. coli, K. pneumoniae and P. aeruginosa because of its antibacterial properties such as low pH, high osmolarity, and production of hydrogen peroxide.
Toyin Olayemi AGBABIAKA and Frank Olakunle OTUYELU
Society of Land Measurements and Cadastre from Transylvania
Agba Dam, which is an important source of raw water used in treatment of water for supply of potable water in Ilorin Metropolis, was evaluated for presence of bacteria, pollution level and potability. Samples were collected from four points along the course of the dam. Bacteria isolated included Enterobacter aerogenes, Salmonella enteritidis, Shigella dysenteriae, Proteus vulgaris, Enterobacter cloacae and Escherichia coli using selective media and Microbact identification system. The pH of the water samples ranged between 7.51-7.90, temperature ranged between 22-29 °C, total hardness ranged between 0.38-0.49 gm/l, total suspended solid ranged between 0.17-0.25 mg/l, total solid ranged between 0.86-0.99 mg/l, dissolved solid ranged between 0.61-0.78 mg/l. The average total bacterial and coliform counts ranged from 1.0×102-1.54×102 cfu/ml and 1.1×101-5.9×101 cfu/ml respectively. The presence of these pathogenic microorganisms showed high level of contamination of the raw water body. This might be a consequence of the human activities around the water body, thus posing a great health risk if not properly and adequately treated.
Toyin Olayemi AGBABIAKA and Blessing Olubunmi OLOFINTOYE
Society of Land Measurements and Cadastre from Transylvania
The aim of the study was to investigate the microbial populations of water and biofilm samples from seven hand dug wells in Ilorin, Nigeria, which are for private and public use. Physicochemical parameters such as pH, turbidity, total dissolved solids, temperature, conductivity, dissolved oxygen and biological oxygen demand were determined. Biofilm growths were induced from water samples obtained from selected wells. Twenty bacteria isolated were identified using morphological and biochemical characteristics as well as molecular methods and includes Shigella sonnei, Shigella dysenteriae, Micrococcus luteus, Bacillus sphaericus, Salmonella enteritidis, Proteus mirabilis strain IK-MB4-518F, Bacillus licheniformis strain RH104, Bacillus subtilis, Erwinia sp., Proteus vulgaris, Yersina sp., Bacillus cereus, Staphylococcus aureus, Serratia marcescens, Pseudomonas aeruginosa strain GS1, Pseudomonas aeruginosa strain 218B, Staphylococcus epidermidis, Vibrio sp., Escherichia coli and Bacillus pasteurii. Total bacterial count ranged from 1.8×104-1.53×106 cfu/ml. Water samples from these wells are therefore not potable and some of the isolates are potential health hazards to human population.