[delta66]

Yeast and Temperature

Question: How does temperature affect yeast?

Replies:

- Dear Alyssa,
At low temperatures (0-10 C) yeast will not grow, but not die either. At temperatures 10-37 C yeast will grow and multiply, faster at higher temperatures with an optimal growth at 30 or 37 C (that depends on the species). At higher temperature the cells become stressed, meaning that their content becomes damaged and which can be repaired to some degree. At high temperatures (>50 C) the cells die. The bacteria can survive freezing under certain conditions.
When baking bread all yeast dies during the process.
Dr. Trudy Wassenaar

- yeast is a unique type of fungi that grows quickly by rapid cell division. It grows best at about 100 degrees fahrenheit, colder will cause it to go dormant, much warmer could kill it
J. Elliott

http://www.newton.dep.anl.gov/askasc...9/bio99693.htm