Antioxidant and Antibacterial Effects of Pollen Extracts on Human Multidrug-Resistant Pathogenic Bacteria

Table 3

Antibacterial activities of pollen extracts and ethanol.

Pollen samples	Mean of the inhibition diameter zone (mm)
	Acinetobacter baumannii	Enterobacter cloacae	Escherichia coli	Klebsiella pneumonia	Pseudomonas aeruginosa	Staphylococcus aureus
Centaurium erythraea	7 ± 0.88^e	12 ± 1^d	7 ± 1^e	6 ± 0.01^d	6 ± 0.01^c	6 ± 0.01^f
Citrus aurantium	6 ± 0.01^e	6 ± 0.01^f	6 ± 0.01^f	6 ± 0.01^d	6 ± 0.01^c	7 ± 1^e
Coriandrum sativum	11 ± 0.18^d	13 ± 0.57^c	8 ± 0.2^d	11 ± 0.88^c	6 ± 0.01^c	13 ± 0.88^d
Punica granatum	17 ± 0.54^b	17 ± 0.88^b	15 ± 0.57^b	18.66 ± 0.88^b	17 ± 1^b	19.33 ± 0.33^b
Quercus ilex	19 ± 0.88^a	18 ± 0.33^a	17.33 ± 0.88^a	19.66 ± 0.88^a	18.33 ± 0.88^a	22.33 ± 1.20^a
Ruta graveolens	13 ± 0.88^c	8 ± 0.1^e	14 ± 0.57^c	6 ± 0.01^d	6 ± 0.01^c	14 ± 0.57^c
Ethanol (control)	6 ± 0.01^e	6 ± 0.01^f	6 ± 0.01^f	6 ± 0.01^d	6 ± 0.01^c	6 ± 0.01^f

Diameter of the inhibition zone produced around the disks by the addition of 10 μl of extracts. Diameter of the disc = 6 mm is included. All values are represented as the mean of the inhibition zone ± SD. Values in the same column followed by the same letter are not significantly different by Tukey’s multiple range test ().