Clove Buds Essential Oil: The Impact of Grinding on the Chemical Composition and Its Biological Activities Involved in Consumer’s Health Security

Table 2

Antimicrobial activity of clove buds essential oil.

Doses (μL)/strains	EO from (grounded buds)			EO from (ungrounded buds)			Antibiotics
	1	5	10	1	5	10	GM	C	E	P
Diameter of inhibition zone (mm)
B. cereus	^a	^a	^a	^a	^a	^a	—	—	^a	—
S. aureus	^a	^a	^a	^a	^a	^a	—	—	—	^a
L. monocytogenes	^a	^a	^a	^b	^b	^b	^b	—	—	—
E. coli	^a	^a	^a	^b	^b	^b	—	^a	—	—
S. enteritidis	^b	^b	^b	^c	^c	^c	—	—	^a	—

The different superscripts in the same line means significant difference (). All antibiotics were applied at a concentration of 0.33 μg/mL. GM: gentamicin; C: chloramphenicol; E: erythromycin; P: penicillin. Pure essential oil was applied on a surface of 6 mm disc.