COLD‐TOLERANT FERMENTATIVE GRAM‐NEGATIVE ORGANISMS FROM MEAT AND OTHER SOURCES

摘要: SUMMARY: From various chilled meats, twenty-eight strains of coli-aerogenes bacteria and one Aeromonas were isolated which grew well at +1±5° some −1±5°. The optimum growth temperature for most these was nearer 37° than 30°. Nine (including the Aeromonas) fermented lactose rapidly, remainder slowly or not all. All rapidly with production gas gave positive presumptive tests in MacConkey's broth 30°, but only five 37°; none 44°. Because such organisms can attain populations millions/cm2, they could confuse interpretation made on meat.