Which of the following is true about pasteurization?: (A) It kills all bacteria and spores, (B) It kills all bacteria except thermoduric bacteria, (C) It kills 95% of microorganisms, (D) All bacteria are destroyed
Answer is B. Ans. is 'b' i.e., It kills all bacteria except thermoduric bacteria (Ref: Ananthanarayan, 9th/e, p. 31, 8th/e, p. 31-32) Thermoduric bacteria - Bacteria which can survive, to varying extents, the pasteurization process.Pasteurization kills nearly 90% of bacteria in milk except certain bacteria like Coxiella burnetti which is resistant to Holders method of sterilization but killed by Flash method of Sterilization.