High exposure to bioaerosols may promotes range of infection. Bioaerosols causes air pollutants in indoor or outdoor
environment. Teaching laboratories, one the facility that commonly used by the student and staff designed to have a control indoor
environment to minimise level of bioaerosol that may affect health and contaminate the experimental results. Hence, this study
investigated the indoor air quality by measuring the bacterial and fungal bioaerosol in 4 different teaching laboratories in University
of Cyberjaya. Settle plate and contact plate method were used for passive air and surface sampling. Colonies were counted after 48
hours incubation and identified based on morphology characteristic. Bacterial identifications were evaluated using streak plate and
Gram-staining method. Results showed that Pharmacognosy Laboratory has the highest number of bacterial and fungal bioaerosols
with 124.00 and 38.00 CFU/m3
respectively compared to Medical Science Laboratory 1 and Clean Room. The lowest number of
bacterial and fungal bioaerosols measured in Medical Science Laboratory 2 with 12 CFU/m3
and 16 CFU/m3
respectively.
Culturable bacterial bioaerosol showed a variety colour of colonies, with different morphological characteristic. Gram stain of the
bacteria from all four laboratories revealed that 62.5% was gram positive cocci, 18.75% was gram negative cocci and 18.75% was
gram negative coccobacilli. This study found the indoor air quality of laboratories of University of Cyberjaya is within the standard
level and the bioaerosol is considerably low, hence it is safe to students and staffs. However, proper maintenance is needed to
prevent bioaerosol emission.
Key words: bioaerosols; bacterial bioaerosols; fungal bioaerosols
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