Heat resistance and growth of Salmonella enteritidis, Listeria monocytogenes and Aeromonas hydrophila in whole liquid egg
Abdel Karem, H.; Mattar, Z.
Acta Microbiologica Polonica 50(1): 27-35
2001
ISSN/ISBN: 0137-1320 PMID: 11518391 Document Number: 535887
Salmonella enteritidis ATCC,13067, Listeria monocytogenes ATCC,19116 and Aeromonas hydrophila ATCC, 7965 strains were evaluated for growth and thermal resistance in liquid whole egg (LWE). Each strain grew well in LWE at temperatures between 4 and 30 degrees C, except S. enteritidis which grew weakly at 4 and 10 degrees C. Maximum populations for each strain increased with increasing growth temperature. The thermal destruction of each strain was determined in 6 liquid products. The egg products used were LWE, LWE with 5, 10 and 15% NaCl and LWE with 5 and 10% sucrose. L. monocytogenes tended to be more heat resistant than S. enteritidis and A. hydrophila. The highest kill rates were noted in LWE, while survival was best in those products supplemented with NaCl. Radiation D10 values of strains in LWE were 0.18, 0.39 and 0.49 kGy for A. hydrophila, S. enteritidis and L. monocytogenes, respectively.