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Jang M.,Plant Resources Research Institute | Hong E.,Duksung Womens University | Kim G.-H.,Duksung Womens University
Journal of Food Science

This study investigated antibacterial activities of 4 isothiocyanates (3-butenyl, 4-phentenyl, 2-phenylethyl, and benzyl isothiocyanate) against 4 Gram-positive bacteria (Bacillus cereus, Bacillus subtilis, Listeria monocytogenes, and Staphylococcus aureus) and 7 Gram-negative bacteria (Aeromonas hydrophila, Pseudomonas aeruginosa, Salmonella choleaesuis, Salmonella enterica, Serratia marcescens, Shigella sonnei, and Vibrio parahaemolyticus) by an agar disc diffusion assay. Benzyl isothiocyanate (> 90.00 mm inhibition zone diameter at 0.1 μL/mL) and 2-phenylethyl isothiocyanate (58.33 mm at 0.2 μL/mL) showed large inhibition zones especially against B. cereus. Also, 3-butenyl isothiocyanate (21.67 mm at 1.0 μL/mL) and 4-pentenyl isothiocyanate (19.67 mm at 1.0 μL/mL) displayed potent antibacterial activity against A. hydrophila. Benzyl and 2-phenylethyl isothiocyanate indicated higher activity against most of the pathogenic bacteria than 3-butenyl and 4-pentenyl isothiocyanate, and were more effective against Gram-positive bacteria than Gram-negative bacteria. © 2010 Institute of Food Technologists®. Source

Lee J.H.,Plant Resources Research Institute | Jang M.,Plant Resources Research Institute | Seo J.,Plant Resources Research Institute | Kim G.H.,Plant Resources Research Institute | Kim G.H.,Duksung Womens University
Journal of Food Safety

The antimicrobial activities of C. indicum-essential oil and its components (thujone, chrysanthemyl alcohol, camphor, and γ-terpinene) were examined with ten food-borne pathogens. C. indicum-essential oil showed the potent inhibition of growth for Listeria monocytogenes, Staphylococcus aureus, Aeromonas hydrophila, Salmonella choleraesuis, Shigella sonnei and Vibrio parahaemolyticus. MIC values for C. indicum-essential oil were found to be the range of 1.25-10μg/mL, and C. indicum-essential oil inhibited very effectively the growth of B. cereus, S. aureus, A. hydrophilia, S. choleraesuis, S. enterica, S. sonnei, V. parahaemolyticus and V. vulnificus. MBC values of C. indicum-essential oil was declined as the following order; A. hydrophilia Source

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