title: Comparison of Growth Kinetics of Various PathogenicE. colion Fresh Perilla Leaf.
abstract: Growth kinetics forEscherichia coliO157:H7 in perilla leaves were compared to those of pathogenicE. colistrains, including enteropathogenic (EPEC), enterotoxigenic (ETEC), enteroinvasive (EIEC) and other enterohemorrhagic (EHEC) at 13, 17, 24, 30 and 36 °C. Models for lag time (LT), specific growth rate (SGR) and maximum population density (MPD) as a function of temperature were developed. The performance of the models was quantified using the ratio method and an acceptable prediction zone method. Significant differences in SGR and LT among the strains were observed at all temperatures. Overall, the shortest LT was observed withE. coliO157:H7, followed by EPEC, other EHEC, EIEC and ETEC, while the fastest growth rates were noted in EPEC, followed byE. coliO157:H7, ETEC, other EHEC and EIEC. The models forE. coliO157:H7 in perilla leaves was suitable for use in making predictions for EPEC and other EHEC strains.
authors.affiliation: Department of Food and Nutrition, 1 Hoeki-dong, Dongdaemun-gu, Kyung Hee University, Seoul 130-701, Korea. wngml2316@gmail.com.
authors.forename: Juhui
authors.initials: J
authors.lastname: Kim
authors.affiliation: Department of Food and Nutrition, 1 Hoeki-dong, Dongdaemun-gu, Kyung Hee University, Seoul 130-701, Korea. hoi-f-eun@hanmail.net.
authors.forename: Eunyoung
authors.initials: E
authors.lastname: Ro
authors.affiliation: Department of Food and Nutrition, 1 Hoeki-dong, Dongdaemun-gu, Kyung Hee University, Seoul 130-701, Korea. ksyoon@khu.ac.kr.
authors.forename: Kisun
authors.initials: K
authors.lastname: Yoon
keywords: E. coli O157:H7; growth model; pathogenic E. coli; perilla leaves; validation