Thermal inactivation of several Mycobacterium spp. in milk by pasteurization
- 1 March 1996
- journal article
- Published by Oxford University Press (OUP) in Letters in Applied Microbiology
- Vol. 22 (3) , 253-256
- https://doi.org/10.1111/j.1472-765x.1996.tb01154.x
Abstract
The thermal inactivation of Mycobacterium avium, Myco. bovis, Myco. fortuitum, Myco. intracellulare and Myco. kansaii in milk at 63.5 degrees C was investigated. Survivors were enumerated after heating for 0, 5, 10, 15, 20 and 30 min and thermal death curves were constructed for each species. Mycobacterium bovis and Myco. fortuitum were found to exhibit linear thermal death curves and neither species demonstrated any survival after heating at 63.5 degrees C for 30 min (equivalent to holder pasteurization). In contrast, Myco. avium, Myco. intracellulare and Myco. kansasii yielded thermal death curves which exhibited significant 'tailing' and all three strains survived holder pasteurization.Keywords
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