Figure 2From: Chemical composition, antimicrobial and antibiofilm activity of the essential oil and methanol extract of the Mediterranean cypress (Cupressus sempervirens L.) Showed biofilm formation of K. pneumoniae in PVC microtiter plate wells arranged from low to high biofilm production. Wells from left to right: (A) negative control (nutrient broth); (B) bacterial suspension supplemented by Eo 100 μg (C), 50 μg (D), 25 μg (E); methanol extract 100 μg (F), 50 μg (G), 25 μg (H) and ceftriaxone as reference antibiotic 100 μg (I) of stained with 1% crystal violet solution after 24 h of incubation at 37°C.Back to article page