Fairchild T M, Foegeding P M
Department of Food Science, North Carolina State University, Box 7624, Raleigh 27695-7624.
Appl Environ Microbiol. 1993 Apr;59(4):1247-50. doi: 10.1128/aem.59.4.1247-1250.1993.
Listeria innocua M1 was developed as a thermal processing indicator organism for L. monocytogenes by selection of a rifampin- and streptomycin-resistant mutant. zetaD values were 5.6 and 5.8 degrees C, and D (68 degrees C) values were 3.8 and 4.9 s for L. monocytogenes and L. innocua, respectively, in skim milk. The advantages of easy selection, similar heat resistance, and nonpathogenicity make L. innocua M1 appropriate for challenge studies designed to evaluate process lethality with respect to L. monocytogenes.
无害李斯特菌M1是通过筛选耐利福平及链霉素的突变体而开发出来的,作为单核细胞增生李斯特菌的热加工指示菌。在脱脂牛奶中,单核细胞增生李斯特菌和无害李斯特菌的ζD值分别为5.6和5.8摄氏度,D(68摄氏度)值分别为3.8和4.9秒。易于筛选、耐热性相似以及无致病性等优点使得无害李斯特菌M1适用于旨在评估针对单核细胞增生李斯特菌的加工致死率的挑战性研究。