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 kurshiukas
Stranger
Registered: 02/02/10
Posts: 218
Loc: LTU
Last seen: 1 year, 9 months
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 Re: What stops trichoderma outside?  [Re: RogerRabbit]
#12182145 - 03/11/10 10:59 AM (3 years, 2 months ago) |
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Quote:
RogerRabbit said:
You may have misread that. Sawdust substrates are autoclaved, but straw and compost should be pasteurized. Sterilized substrates are much more prone to contamination. It's not about hobby vs commercial.
RR
My bad, I've just checked. Indeed it mentions "commercial spawn making autoclave" and "bulk PASTEURIZATION chamber".
There is a question however, why is it have to be around 160 F ?
And why would sterilization make it prone to contamination?
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 Shea25
Just some guy
Registered: 01/27/09
Posts: 7,770
Loc: Westcoast Canada 
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Re: What stops trichoderma outside? [Re: kurshiukas]
#12182148 - 03/11/10 11:01 AM (3 years, 2 months ago) |
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Sterilization makes it more prone to contam because your killing off the good stuff in the bulk.
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Fahkface
Over-Fiend
Registered: 12/11/06
Posts: 4,821
Loc: In your Mind, Pedro! In y...
Last seen: 2 years, 7 months
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Re: What stops trichoderma outside? [Re: Shea25]
#12182282 - 03/11/10 11:39 AM (3 years, 2 months ago) |
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To elaborate this a little more:
Certain thermophilic organisms survive the heating process of pasteurization, while most mold spores are killed.
These organisms help to break down material to make it easier for the mycelium of the desired mushroom to consume.
When you sterilize, the thermophilic organisms are killed as well, leaving the substrate open for any contamination spores, that land on it.
Edited by Fahkface (03/14/10 05:39 AM)
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MagicCannabus
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Registered: 01/27/10
Posts: 61
Last seen: 2 years, 1 month
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Re: What stops trichoderma outside? [Re: Fahkface]
#12198890 - 03/14/10 05:38 AM (3 years, 2 months ago) |
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I think you meant, "when you sterilize......"
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Fahkface
Over-Fiend
Registered: 12/11/06
Posts: 4,821
Loc: In your Mind, Pedro! In y...
Last seen: 2 years, 7 months
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Yup, indeed... gonna be edited
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