Chemical composition and antibacterial activities of seven Eucalyptus species essential oils leaves

Biological Research

Table 3 Antibacterial activity of essential oil of Eucalyptus species

Strains	E.m	E.a	E.c	E.le	E.l	E.s	E.b
*Listeria ivanovii* (RBL30)	25 mm +++	26 mm +++	24 mm +++	12 mm +	11 mm +	20 mm ++	28 mm +++
*Escherichia coli* (ATCC25922)	15 mm ++	15 mm ++	16 mm ++	18 mm ++	20 mm ++	14 mm +	--
*Staphylococcu* s *aureus* (ATCC6533)	--	13 mm +	10 mm +	11 mm +	16 mm ++	12 mm +	15 mm ++
*Enterococcus faecalis* (ATCC29212)	11 mm +	12 mm +	12 mm +	12 mm +	12 mm +	11 mm +	10 mm +
*Bacillus cereus* (ATCC11778)	25 mm +++	29 mm +++	21 mm +++	16 mm ++	17 mm ++	15 mm ++	27 mm +++

Not sensitive (–) for zone diameters equal to 8 mm or below; Sensitive (+) for zone diameters between 8 and 14 mm, Very sensitive (++) for zone diameters between 14 and 20 mm, Extremely sensitive (+++) for zone diameters equal or larger than 20 mm.
E.m : E. maideni; E.a : E. astrengens; E.c : E. cinérea; E.le : E. leucoxylon; E.l : E. lehmani; E.s : E. sideroxylon; E.b : E. bicostata.

ISSN: 0717-6287