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OfflinePen16
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Steam Pasteurizor
    #14474543 - 05/18/11 05:46 PM (12 years, 8 months ago)

hello good people of the shroomery, i bring another one to the table.

I saw the tek on the steam pasteurizing box and figured i could pull that off easy. So with two hours and some garage sale stuff i made one.  i snaked the steamer hose along the bottom put four holes in the hose for even steam and then for some reason i thought some thick ass Plexiglas would work and i drilled holes in it, all mathematical like, and put that over the hose.

After sealing the hole where the hose comes in with high temp silicon and i had myself a nice steam box that could fit two or more pillow cases of poo/straw.

Well after i brought the thing to temperature(about 160), i put the bags in and watched it for two hours but not close enough because a couple of times i realized it reached 200 and pretty quick. so i vented the top and got enough to vent so it would stay at 160-180.

The bigger problem is that after the process was done, i opened it and found that the plexiglas had melted and that the bags actually sat in the pooled water.  Being a dumbass, i mixed in eight jars per case and not even two days later, smells like rot.

Now i know that it sitting in the pooled water at the bottom is probably what did it, but i want to know if steam pasteurizing is a reliable way to go 'cause i've tried submerging castings/straw but they always went sour.

When it hits temperatures over 180, does that just mean the nutrients are getting killed off or why is that such a bad thing?

And the horse poo wasn't dried when i got it, no firefang or anything but a soaked for 24 hours and sun dried for a week.  Is that the proper method?  Ive heard of people spraying their fields with antifungal crap but where i got the poo, there was a mushroom growing so i figured it would be fine right?

I just need some advice cause ive wasted time/money/jars for like 3 months now and im not sure what really to attribute it to.


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Invisiblejokefox
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Re: Steam Pasteurizor [Re: Pen16]
    #14474572 - 05/18/11 05:54 PM (12 years, 8 months ago)

stuff needs holes when it cools or you get bacteria

manure needs to be leached, water dry water dry water dry over 2 weeks

no they dont get killed off, just counts as a semi sterilize


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OfflinePen16
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Re: Steam Pasteurizor [Re: jokefox]
    #14475525 - 05/18/11 09:09 PM (12 years, 8 months ago)

what do you mean by stuff, are you talkin the about the substrate?  I pulled the substrate out after the timer went off and let them air cool, and im pretty sure pillow cases got more holes than you can count.

And i guess i'll try leaching longer this time.


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OfflineRogerRabbitM
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Re: Steam Pasteurizor [Re: Pen16]
    #14475762 - 05/18/11 09:57 PM (12 years, 8 months ago)

Quote:

Well after i brought the thing to temperature(about 160), i put the bags in and watched it for two hours but not close enough because a couple of times i realized it reached 200 and pretty quick. so i vented the top and got enough to vent so it would stay at 160-180.




If you're talking about the pasteurizer box and not the center of the substrate, there's no way it got pasteurized, or even close.

Manure should be field aged in the sun, never leached.  It should have zero smell besides a mild grass scent, and break apart easily.  If you smell ammonia, don't use it, but leave in the sun for another few weeks.
RR


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InvisibleSillicybin
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Re: Steam Pasteurizor [Re: Pen16]
    #14477136 - 05/19/11 06:42 AM (12 years, 8 months ago)

Quote:

Pen16 said:
When it hits temperatures over 180, does that just mean the nutrients are getting killed off or why is that such a bad thing?




As Roger mentioned, you need to make sure that the center of the substrate you're pasteurizing stays between 160-180*F.  The main reason to pasteurize below 180*F is to prevent the destruction of favorable thermophilic bacteria.  The microbes are easily overtaken by mushroom mycelium, but help to resist mold contamination.

Some nutrient loss at higher temperatures may occur, but that is not the reason behind the temperature limit.


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OfflinePen16
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Re: Steam Pasteurizor [Re: Sillicybin]
    #14493589 - 05/22/11 11:28 AM (12 years, 8 months ago)

So if the box was at 160-180 for two hours how long does it take to get the center to the substrate to the right temperature?

And i did leach it and sun dry it for life three days, no smell, broke apart easy, but it wasn't white.  Am i supposed to wait until firefang hits the nugget before i can use it?


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