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Anonymous

Quick help on patureization
    #2287588 - 01/30/04 06:22 PM (12 years, 11 months ago)

I am pasturizing right now and I left it for 10 minutes it started to boil and I quickly lowered the temp to 170 does this mean I have thermal death or was it not long enough to do damage? please help


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OfflineAnnoA
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*pasteurization [Re: fee]
    #2287594 - 01/30/04 06:23 PM (12 years, 11 months ago)

It just could be that you killed most of the beneficial microorganisms, yes.


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Anonymous

Re: *pasteurization [Re: Anno]
    #2287598 - 01/30/04 06:25 PM (12 years, 11 months ago)

so im screwed and start all over hu


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Re: *pasteurization [Re: fee]
    #2287607 - 01/30/04 06:28 PM (12 years, 11 months ago)

It could be......
What you could do is take some fresh material, mix it with the one you have overheated and pasteurize the mix. This will give you the bacteria back to some extent.


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Re: *pasteurization [Re: Anno]
    #2287613 - 01/30/04 06:32 PM (12 years, 11 months ago)

Could I get a quick explaination of why you would want bacteria, thought I heard the experts say several times it is not nessasary for cubes? pasteurize vs. sterilize? I will start my own thread, but fee's q seems to be answered.


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Re: *pasteurization [Re: TheProfessor]
    #2287634 - 01/30/04 06:39 PM (12 years, 11 months ago)

http://www.shroomery.org/index/par/23371

What is the difference between pasteurization and sterilization of casings and substrates?

The pasteurization is carried out for a prolonged time at around 170?F and is supposed to kill only heat susceptible organisms and their spores, while sterilization works at a temperature of 250?F and is supposed to kill all organisms.
The beneficial microorganisms(mainly bacteria)that are left alive when pasteurizing, guard the substrate against other contaminants, for instance different molds, but don't affect the growth of mushroom mycelium.
Pasteurization is used for bulk substrates like straw, dung and composts and wood chips, also casings, and sterilization for all high nutritious substrates, like different grains.


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Anonymous

Re: *pasteurization [Re: Anno]
    #2287645 - 01/30/04 06:43 PM (12 years, 11 months ago)

should I cahnce it or start over it was only like 5 minutes if that


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