Q. Pasteurization is
A) Heating of liquid at $65{^\circ}C$
B) Heating of liquid between $65{^\circ}C\ to\ 80{^\circ}C$ followed by rapid cooling
C) Heating of solid at $65{^\circ}C$
D) None of the above
Explanation
Pasteurization is the method of partial sterilization. In older method of milk pasteurization, milk is heated at $63 - 65{^\circ}C$ for 30 minutes and in HTST or flash pateurization method, milk is heated at $72{^\circ}C$ for at least 15 seconds followed by rapid cooling.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.