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Ascension
Stranger

Registered: 01/13/05
Posts: 156
Loc: Still trying to work it o...
Last seen: 17 years, 7 months
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Why pc when oven would be better, would it not?
#5693424 - 05/31/06 12:27 AM (17 years, 7 months ago) |
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Okai, the whole point of pressure cooking your substrate is that the substrate is exposed to extra heat. So all the contams now get exposed to 121C heat to kill them off instead of just 100C
Why dont people just set there ovens to say 200C and put the jars in the oven for an hour or so.
The only downside of this I can see, is that it might have to sit longer in the oven, as the heat is going to take longer to penetrate the jars because the heat isnt being conveyed by steam.
But this should be offset by the extreme temps the substrate would be exposed too.
As long as you dont dry out your substrate, wouldnt this be a better/easier way?
Obviously not because everyone uses pressure cookers, so please explain to me what im missing.
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meatloaf


Registered: 05/06/06
Posts: 80
Last seen: 3 years, 7 months
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Re: Why pc when oven would be better, would it not? [Re: Ascension]
#5693618 - 05/31/06 01:47 AM (17 years, 7 months ago) |
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well drying out would be the only thing wrong with that, from what i know anyways. so if that is the only problem why not just add more water? well wouldn't that bring more potential contams?
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musher_420
Stranger

Registered: 08/01/05
Posts: 2,691
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Re: Why pc when oven would be better, would it not? [Re: Ascension]
#5693642 - 05/31/06 02:00 AM (17 years, 7 months ago) |
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You can't heat water past 100 degrees C at regular atmospheric pressure without it boiling off.
Therefor the only way to sterilize is to place the water under pressure. The most feasible way of doing it, for the home mushroom cultivator, is a pressure cooker.
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Ascension
Stranger

Registered: 01/13/05
Posts: 156
Loc: Still trying to work it o...
Last seen: 17 years, 7 months
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Re: Why pc when oven would be better, would it not? [Re: musher_420]
#5693689 - 05/31/06 02:20 AM (17 years, 7 months ago) |
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Duh, obivously *me* smacks himself on the forehead.
I knew that one, just over looked it.
Since LC can be made by the liters, could you just cook some substrate in the oven at high temps, completly drying it out.
Then once its cooled down. Just pour in the requred amount of LC and give it a real good shake. It would be colonized in a single day.
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jenerikcairet
cognitivelibertist


Registered: 02/17/06
Posts: 546
Last seen: 11 years, 8 months
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Re: Why pc when oven would be better, would it not? [Re: Ascension]
#5693696 - 05/31/06 02:22 AM (17 years, 7 months ago) |
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the reason i always thought it worked wasnt about getting hotter temperatures alone, but getting WATER the ability to become hotter, not just the ambient temperature. water that is boiling hotter will kill bacteria better than just hot air im sure.
-------------------- Yes, ordinary water. Laced with nothing more than a few spoons full of LSD- professor farsnworth
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scatmanrav
Brainy Smurf

Registered: 05/08/04
Posts: 11,483
Loc:
Last seen: 11 years, 26 days
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Re: Why pc when oven would be better, would it not? [Re: jenerikcairet]
#5701557 - 06/01/06 09:26 PM (17 years, 7 months ago) |
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Ascension, look up blackout and his microwave posts. That is how he had success over and over again in the microwave. It does require first expanding the grain by getting it to soak up the water (soak, or soak and simmer) then cooking it until its dry, but if you do that, the grain seems to suck up the water very quickly. You must also not inject to little or to much so you need to know what the grain holds. Blackout went into great detail on his method though, do a search.
Although a PC still seems the easiest route to me.
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JSshroom
dont be paranoid, just aware

Registered: 06/16/05
Posts: 825
Loc: I love that spore drop
Last seen: 2 months, 15 days
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Re: Why pc when oven would be better, would it not? [Re: scatmanrav]
#5717519 - 06/06/06 12:10 AM (17 years, 7 months ago) |
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It may be a bad habit on my part but I leave the PC all the time. I just get it up to temp set the stove and take note of them time and go do something else. Never had a problem. One of the easiest methods I have come up with is stay up till 3 am working everything to get ready. then Wake up at 7 am load the first jars. Make up the rest of however many your gonna run. Then go back to sleep. Wake up turn stove off. Go Back to sleep until the pressure drops. Then start the process over. I guess the worst that could happen is overpressure plug blew, but it beats being stuck at the house all day because you cant afford a 941
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