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InvisibleCreonAntigone
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Registered: 05/31/21
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How long would you PC compost for substrate at 240f?
    #27832476 - 06/23/22 04:31 AM (2 days, 18 hours ago)

My electric PC goes to 240f on the high setting - 10 degrees lower than the standard PC at 15 psi, but still outperforming the vast majority of electric PCs.

Compost has a million things living in it, yet most people say substrates does not need to be entirely sterile. So how long would I need at that temperature?

Mysticmycologist said in my last thread that he prepares compost for 8 hours in an instantpot on the sous-vis setting. This will be more efficient than that. I plan to load into bags.

Would 4 hours do? 6? Or would that be overkill?

If it only takes 2 hours to kill all the endospores of grain in a standard PC, wouldn't it be massive overkill to cook much longer? Compost has a lot of endospores, but sterile is sterile - how long would I really need to kill everything in the compost? Would it be preferable to not kill everything and to only pasteurize it as opposed to sterilize?


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OfflineDERRAYLD
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Re: How long would you PC compost for substrate at 240f? [Re: CreonAntigone] * 2
    #27832477 - 06/23/22 04:33 AM (2 days, 18 hours ago)

He uses a sous vides because he's pasteurizing not sterilizing.
You should not pc compost, you should pasteurize which can be done in 2 hours.


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InvisibleCreonAntigone
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Registered: 05/31/21
Posts: 1,804
Re: How long would you PC compost for substrate at 240f? [Re: DERRAYLD]
    #27832483 - 06/23/22 04:42 AM (2 days, 17 hours ago)

Quote:

DERRAYLD said:
He uses a sous vides because he's pasteurizing not sterilizing.
You should not pc compost, you should pasteurize which can be done in 2 hours.




Maybe then I should use the low setting at 2 hours.

How much worse would it be if I did end up sterilizing the compost? Would it perform a lot worse than the pasteurized compost?


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OfflineDERRAYLD
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Re: How long would you PC compost for substrate at 240f? [Re: CreonAntigone] * 1
    #27832485 - 06/23/22 04:44 AM (2 days, 17 hours ago)

Sterilized compost does not perform well, pasteurizing is key.

You need to get a thermometer and have to maintain 155 - 165f for 2 hours.


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InvisibleGoatriderS
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Registered: 04/08/20
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Re: How long would you PC compost for substrate at 240f? [Re: DERRAYLD]
    #27832488 - 06/23/22 04:50 AM (2 days, 17 hours ago)

All :whathesaid:

I guess the compost is meant for bulk,
if you sterilize it you´d need to spawn in sterile conditions.
Spawning open air would bring you all colours in no time :wink:

            :cookiemonster:


--------------------


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InvisibleCreonAntigone
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Registered: 05/31/21
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Re: How long would you PC compost for substrate at 240f? [Re: DERRAYLD]
    #27832493 - 06/23/22 04:58 AM (2 days, 17 hours ago)

Quote:

DERRAYLD said:
Sterilized compost does not perform well, pasteurizing is key.

You need to get a thermometer and have to maintain 155 - 165f for 2 hours.




If that's the case, then my PC is too hot because even the low setting is higher than that.

I really don't want to pasteurize compost in the kitchen, so I guess what I'll have to do is use my hotplate and pasteurize in a pot outside.

Unless I could try a hot setting for a short time - I am reading that the concept of 'flash pasteurization' could mean a higher temperature and a shorter time to achieve the same result. So what if I got it to high pressure but only for 10-30 minutes - could this achieve the same result as to cook it longer at a lower temperature?


Edited by CreonAntigone (06/23/22 05:02 AM)


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OfflineDERRAYLD
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Re: How long would you PC compost for substrate at 240f? [Re: CreonAntigone]
    #27832495 - 06/23/22 05:01 AM (2 days, 17 hours ago)

You should be able to set your low so that it reaches 165f, turn the stove off and put the lid on.

It should maintain temp with the lid closed, check periodically and turn the stove on if needed, you will have to play with it to maintain the temperature.


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InvisibleBaba Yaga
♥ coir grower

Registered: 09/13/20
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Re: How long would you PC compost for substrate at 240f? [Re: DERRAYLD] * 1
    #27832553 - 06/23/22 07:01 AM (2 days, 15 hours ago)

you will have to make sure that the core get up to temperature. I think flash
pasteurization is for liquids. cronicr has posted an easy pasteurization video somewhere.

Edit: link to video

https://www.shroomery.org/forums/showflat.php/Number/27225746


Edited by Baba Yaga (06/23/22 07:03 AM)


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