Decomposition of Carbohydrates and Alcohols with Production of Gas at 46°C. By Members of the Genus Escherichia

A. A. Hajna
1937 Journal of Bacteriology  
Although it has been known for many years that Escherichia coli grows rapidly and luxuriantly at a temperature well above that of the body, only a few workers (Leiter, 1929; Williams, Weaver, and Scherago, 1933; Hajna, 1933 and Hajna and Perry, 1935) have utilized higher temperatures either in the isolation of this organism or in the study of its fermentation of various carbohydrates or alcohols. As far as the author is aware, only glucose (Eijkman, 1904; Hajna, 1933, Hajna and Skinner and
more » ... nd Skinner and Brown, 1934) , mannitol (Bulir, 1907; Minkewitsch, 1929; Skinner and Brown, 1934) , and lactose (Levine, Epstein and Vaughn, 1934) have been utilized in the investigation of the ability of Escherichia coli to ferment at, or around, the temperature of 460C. The following investigation was therefore undertaken to determine whether the members of the genus Escherichia can decompose carbohydrates and alcohols other than those referred to, at this temperature. METHODS AND MATERIALS Cultures. Cultures isolated from human feces, were grouped on the basis of (1) fermentation of sucrose, sorbitol, dulcitol, adonitol, and salicin at 370C.; and (2) the degree of roughness and smoothness as indicated by their colony characteristics on eosin methylene-blue agar plates. (See table 1.) Inoculation of cultures. Inoculations were made at first by a
doi:10.1128/jb.33.4.339-347.1937 fatcat:nl3xeakb4fbqboolkikhydfgxy