ASSESSMENT OF MICROBIOLOGICAL QUALITY OF INDOOR AIR OF AN OCCUPIED ROOM IN EMMANUEL ALAYANDE COLLEGE OF EDUCATION, OYO

Abstract

A study on indoor air as regard microbiological contamination in various Lecture and office rooms of Emmanuel Alayande College of Education building in Oyo town. Investigation were conducted on the quality of indoor air in all the sampled selected rooms taken as sample within the institution. Air samples were taken twice a day using open plate technique, in the morning and in the afternoon. The sample were incubated for 24 – 48hrs at 370C for the determination of the total number of bacterial and for enumeration of fungi it was incubated for 10 days at 250C. In all of the tested places a multiple growth of bacteria and significant increase of mould species was observed both in the morning and afternoon. There were higher growth of bacteria in numbers as opposed to fungi and mould implicated in the study. It was also observed that the microbial quality of the air investigated rooms were differentiated and changed significantly in the course of the day. Some of the microorganisms implicated in this sudy are Micrococcus sp, Streptococcus sp, Staphlococcus sp, Pseudomonas sp, Bacillus sp, Candida sp, Aspergillus sp, and Penicillium sp.Presence of this microbial organism could cause serious health problems for the students, lecturers, and other staff occupying these rooms.