Microbiology140

Section 1 . Basic Information

The title of the article is Efficacy of Various Pasteurization Time-Temperature Conditions in Combination with Homogenization on Inactivation of Mycobacterium avium subsp . paratuberculosis in Milk Authored by Irene R . Grant , Alan G . Williams , Michael T . Rowe and D Donald Muir , it appeared in the June 2005 Volume 71 Issue 6 of Applied and Environmental Microbiology . The American Society publishes this journal for Microbiology

Section 2 . Type of Article

The article is a report on an experimental research conducted in the area of food microbiology involving the

effects of a combination of sterilization techniques on a subspecies of disease-causing microorganism that frequently contaminates fresh cow 's milk . An extension of a previous research , the aim of the U .K .-based authors was to find an optimal process that can make cow 's milk safer for human consumption

Section 3 . Summary

Mycobacterium avium subspecies paratuberculosis is an acid-fast bacterium that causes Johne 's disease in cattle and is implicated in Crohn 's disease involving the gastrointestinal tract in man Transmission of paratuberculosis is via oral route - through the ingestion of contaminated dairy milk

Pasteurization and homogenization are current methods used to clear raw cow 's milk of microorganisms through the application of heat and pressure and increase shelf life . However , the authors wanted to find out the pasteurization time and temperature that is most effective in killing M . avium subsp . paratuberculosis , especially since compared to other species , it appears to be resistant to heat . The study also tested...