WORLD JOURNAL OF ADVANCE
HEALTHCARE RESEARCH

Udu-Ibiam Onyinyechi E.*, Andoackaa Austin D.

ABSTRACT

The Bacteriological determination of outdoor air quality of a section of Ebonyi state university old laboratory complex was examined. The microbial counts in the outdoor air environment of the sample site ranged from 10cfu/m3 to 80cfu/m3. The highest mean bacterial count (68.7cfu/m3) was recorded at noon and the lowest mean bacterial count (15cfu/m3) was recorded in the morning. However, there was no significant difference (p>0.05) between the counts obtained in the morning and those recorded in the afternoon. The isolated organism were tested against aqueous extract of lemon grass plant grown in the region, it was observed that the inhibition zone diameter of aqueous extract of lemon grass plant against the isolates ranged from 17 to 48 mm showing better antimicrobial activity against common pathogenic bacteria species. Based on the obtained results, lemongrass has demonstrated varying degree of antibacterial activity against Staphylococcus aureus, Escherichia coli, and Bacillus sp., Pseudomons spp, Therefore, this signifies that some bacteria that have not been tested with lemongrass extract in this research may also be susceptible to the antibacterial effect of lemongrass.