determined time period. The time-temperature combinations for
the batch heat treatments that are commonly employed in the
commercial yogurt making include 85 º for 30 min and 90-95 ºC
for 5 min [5].Alternative time-temperature combinations
available for the milk pasteurization are summarized in the Table
2. Despite the time-temperature combination used, it is a must to
fulfill the minimum requirement to destroy the most heat
resistant pathogen currently recognized in milk, Coxiella
burnetii that cause Q-fever in humans [16]. Heat treatment of
milk is important to destroy unnecessary pathogenic organisms
and enzymes present in milk