Comparison of Chemical Composition and Bioactivities of Essential Oils from Fresh and Dry Rhizomes of Zingiber zerumbet (L.) Smith

Table 4

MIC and MBC values of Z. zerumbet FR-EO, DR-EO, and zerumbone using microdilution assay.

Microorganism	MIC and MBC (μg/mL)^a
	FR-EO		DR-EO		Zerumbone		Streptomycin
	MIC	MBC	MIC	MBC	MIC	MBC	MIC	MBC
Gram positive
E. faecalis ATCC 29212	1250.00	1250.00	1250.00	1250.00	250.00	250.00	0.20	0.78
S. aureus ATCC 6538P	78.13	156.25	156.25	156.25	31.25	62.50	0.78	0.78
B. subtilis CMCC (B) 63501	78.13	156.25	156.25	312.50	62.50	125.00	0.10	0.20
Gram negative
P. aeruginosa CMCC (B)10104	312.50	625.00	312.50	625.00	250.00	250.00	3.13	12.50
E. coli ATCC 25922	156.25	312.25	156.25	625.00	62.50	62.50	3.13	6.25
P. vulgaris CMCC (B) 49027	78.13	156.25	156.25	312.50	62.50	62.50	0.20	0.39
Fungus
C. albicans CMCC (F) 98001	312.50	2500.00	312.50	2500.00	31.25	250.00	Na	Na

^aMIC: minimal inhibitory concentration; MBC: minimal bactericidal concentration; streptomycin as positive control.