Antibacterial activity was tested against six pathogens (Listeria monocytogenes KCTC 3569, Staphylococcus aureus subsp. aureus KCCM 12255, Pseudomonas fluorescens ATCC 21541, Escherichia coli ATCC 11775, Salmonella Enteritidis KCTC 12400 and Vibrio parahaemolyticus ATCC 17802) by a paper disc method ( Beuchat & Brackett, 1990).