ISSN 2415-1297 (Online)   ISSN 2415-1300 (Print)
 
             
 
Volume : 27 Issue : 3 Year : 2019
 
The Effect of pH and Temperature on Motility of Listeria Species [Med J Islamic World Acad Sci]
Med J Islamic World Acad Sci. 1992; 5(1): 28-31

The Effect of pH and Temperature on Motility of Listeria Species

Syed M. Khalid, Shakeel A. Khan, Roquya Siddiqui
From Department of Microbiology, University of Karachi, Karachi- 75270, Pakistan.

The effect of pH of the medium and temperature of incubation was studied on motility of four strains of 2 Listeria species. All the strains were found to be non-motile at pH 4. The motility was observed at a pH range of 5.5 to 9.0. However, the optimum pH and temperature for motility was 7.0 and 22C respectively. The strains NCTC 7973 and C-274 were, however, motile at pH 5.0. At pH 10, NCTC 5214 m, C-274 and NCTC 7973 were motile at 22C with the exception of C-274 which was motile also at 35C. NCTC 5214 m was motile at pH 11 only at 22C whereas C-274 was motile at both 22 and 35C.

Keywords: Listeria, pH, temperature


Syed M. Khalid, Shakeel A. Khan, Roquya Siddiqui. The Effect of pH and Temperature on Motility of Listeria Species. Med J Islamic World Acad Sci. 1992; 5(1): 28-31

Corresponding Author: Syed M. Khalid, Pakistan


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