pasteruization is still used in milk industries in india
Depends on what sort of phosphatase your asking about. Phosphatase Test in the Milk industry is to determine if pasteurization is successful. Phosphatase is a naturally occurring enzyme, and helps the body adsorb nutrients such as Calcium. However, this enzyme becomes inactive at temps* used for pasteurization (for killing harmful bacteria in milk). So pretty much if a Phosphatase test is positive, it means that the pasterurization has not been successful. Pasteruization is a mix of both heat and time. generally most bacteria will die at temp of 64 degrees celcius and higher, for 30mins. NB: the higher the temp the sorter the holding time can be. for e.g. 80 degrees celcius for 15mins does the job. Hope this helped answer your question