Tyndallisation is carried out for________________?
Correct answer: D. Three successive days
- A. One day
- B. Two successive days
- C. 60 minutes
- D. Three successive days
Explanation
Tyndallisation is intermittent steaming, usually for about 20 to 30 minutes on each of three successive days. The intervals allow spores to germinate so that the vegetative cells can be killed during the next heating cycle.
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