Blechnum Orientale Linn - a fern with potential as antioxidant, anticancer and antibacterial agent

Table 3 Inhibition zone diameter of Blechnum orientale extracts and standard antibiotics against five Gram-positive bacteria^a

	^bInhibition zone diameter (mm)
	B. cereus	M. luteus	MSSA	MRSA	S. epidermidis
^cCrude	9.5	11.3	9.5	10.5	9.0
^cPEf	7.0	7.5	7.9	8.0	-
^cCf	7.5	7.8	-	8.5	-
^cEAf	11.0	13.8	10.8	13.0	9.1
^cButf	11.0	14.3	12.0	13.0	11.3
^cWatf	10.3	12.8	10.5	11.5	9.8
^dStreptomycin	18.0	24.0	16.6	-	-
^dVancomycin	18.0	30.0	17.5	20.0	19.5
^dOxacillin	8.0	48.0	22.3	-	25.5

Results are mean from three sets of experiments, each set in triplicate.
^a No activity was found against Gram-negative bacteria (Escherichia coli, Pseudomonas aeruginosa, Enterobacter aerogenes, Salmonella choleraesius; Klebsiella pneumoniae). Data not shown.
^b Inhibition zone diameter includes diameter of disc (6 mm); (-): not active
^c Extracts were tested at 1 mg/disc
^d Reference antibiotics discs: Streptomycin 10 μg; vancomycin 30 μg; oxacillin 1 μg

ISSN: 2662-7671