Table 4 Inhibitory spectrum of bacteriocin from Lactobacillus gasseri G2

Microorganisms	Indicator species	Antibacterial activity
Gram-positive bacteria	Bacillus cereus KCCM 40935	++
	Listeria monocytogenes CCARM 0214	++++
	Staphylococcus aureus ATCC 40510	+++
	Clostridium perfringens KCCM 40946	++
	Lactobacillus plantarum ATCC 49445	+++
	Lactobacillus acidophilus ATCC 4162	+++
	Lactobacillus sakei ATCC 15521	+++
	Leuconostoc mesenteroides ATCC 9135	++++
Gram-negative bacteria	Escherichia coli O157:H7 ATCC 43888	++++
	Enterobacter sakazakii KCTC 2749	++
	Salmonella Enteritidis KCCM 12021	++++
	Shigella flexneri KCCM 40948	++
	Shigella boydii KCCM 41649	++++
	Vibrio parahaemolyticus KCCM 11965	+++
	Vibrio vulnificus ATCC 29306	-

-: no clear zone; +: ≤ 6 mm; ++: 6.1 mm≤clear zone ≤ 10.1 mm; +++: 10.1 ≤ clear zone ≤ 14.1 mm, ++++ ≥ 14.2 mm