Among the tested microbial strains, strong inhibition effect was found against P. denitrificans [(15.0 ± 0.7) mm], P. vulgaris [(15 ± 0) mm], E. coli [(15 ± 0) mm] and B. subtilis [(14.0 ± 2.8) mm]. X. campestris [(12.5 ± 0.7) mm] is susceptible to the oil, whereas S. lutea [(9.0 ± 1.4) mm] and K. pneumonia [(8 ± 0) mm] are relatively less susceptible (Figure 1)