Pasteurization of milk is achieved by boiling at-
Correct Answer: 65deg C for 30 min
Description: Ans. is 'a' i.e., 65deg C for 30 min Pasteurization o Pasteurization is done to destroy (the pathogens that may be present in milk, while causing minimal change in the composition, flavor and nutritive value. o Pasteurization kills nearly 90% of the bacteria in milk, including the more heat resistant - Tubercle bacilli - Q fever organisms o It does not kill the thermoduric bacteria. o It does not kill bacterial spores. There are 3 widely used methods for pasteurization : a. Holder method: Milk kept at 63-66,}C for 30 minutes is rapidly cooled to 5degC. b.HTST method: 'High-temperature short time' method (Flash method) o Heated to 72degC for 15 sec. and then rapidly cooled to 4degC o This is now the most widely used method. c.UHT method: o Ultra-high temperature method. o Rapidly heated in two stages to 125degC for few seconds, o The second stage is being under pressure. o It is then rapidly cooled.
Category:
Social & Preventive Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now