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Old 08-11-2011, 02:14 PM   #1
komomos
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Default Saccharomyces cerevisiae

Is there any scientific resource which explain the Saccharomyces cerevisiae will die at fewest tempereture ?

Could yeast survive -10 Celcius?



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Old 08-11-2011, 02:17 PM   #2
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I keep yeast in a frozen bank for years, you just need to handle them properly and know what you are doing with them!



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Old 08-11-2011, 02:22 PM   #3
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this book will tell you everything you need to know about yeast as is it is related to brewing. if you are homebrewing, in my opinion, this is a must read.

http://www.amazon.com/Yeast-Practical-Fermentation-Brewing-Elements/dp/0937381969

the problem with yeast surviving sub-zero temperatures is that ice crystals form in the liquid that holds the yeast. these sharp ice crystals puncture the cell walls as they form. the chance of any yeast surviving that, especially after a period of time, is very low.

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Old 08-11-2011, 02:23 PM   #4
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Quote:
Originally Posted by thelastdandy View Post
sub-zero temperatures is that ice crystals form in the liquid that holds the yeast. these sharp ice crystals puncture the cell walls as they form. the chance of any yeast surviving that, especially after a period of time, is very low.
Exactly, this is why you use some sort of other liquid medium to store the yeast in freezing temps.
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