To overcome this feature, larger amounts of antimicrobial agent is required. In PP, thymol was also found to inhibit the S. aureus growth. The inhibition clear zone diameter of 3.7 cm was observed when 8 wt% thymol was added [9]. Thymol was also found to inhibit the E. coli, S. aureus, Listeria, B. subtilis and Salmonella. However, the inhibition was directly depended on thymol concentration