Zone of Inhibition (mm) Samples Gram positive Gram negative h-MoO3 Streptococcus aureus Bacillus megaterium Escherchia coli 1-Oct 2 4 - 2-Oct - 7 - 3-Oct 3 13 - α-MoO3 1-Oct 3 6 15 2-Oct 2 8 18 3-Oct - 10 9

Table 2: Antibacterial activity of h-MoO3 and α-MoO3.