Onion Essential Oil-in-Water Emulsion as a Food Flavoring Agent: Effect of Environmental Stress on Physical Properties and Antibacterial Activity

Table 2

The clear zone inhibition diameter (mm) of onion essential oil against selected bacteria.

Bacteria	Onion oil (5% of bulk oil)	Streptomycin
E. coli	^b	^b
S. Typhimurium	^b	^b
S. aureus	^b	^a
L. monocytogenes	^a	^a

Note: values are given as (). Inhibition zone includes diameter of disc (6 mm). Different letters indicate significant differences within columns at .