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cookeman
Live and let live



Registered: 10/26/05
Posts: 1,077
Last seen: 11 years, 9 months
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Sublicious Compost pasteurized forever?
#12034973 - 02/15/10 04:03 PM (14 years, 10 months ago) |
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On the subliciouscompost website it says that they pasteurize their compost for 3 hours at 160 degrees and that if the bag is kept sealed it will "remain contaminate free for as long as the filter patched bags remained sealed". I thought pasteurizing gives you sort-of a window of opportunity where the beneficial bacteria far out number the bad bacteria which allows for mushroom mycelium to take over the substrate with out issues.
Also, I thought it was bad if you pasteurized for over 90 minutes because you'd begin to kill more and more good bacteria.
-------------------- “Let’s put it this way – to lump psychedelic mushrooms into the same group as methamphetamine is like lumping the Bible into the same group as Mein Kampf.
I mean shit; they’re both books, right?”
Joe Rogan
R.I.P. - "Bones" - One of the greatest people I've ever had the pleasure of getting to know and become friends with.
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cookeman
Live and let live



Registered: 10/26/05
Posts: 1,077
Last seen: 11 years, 9 months
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Re: Sublicious Compost pasteurized forever? [Re: cookeman]
#12041037 - 02/16/10 04:25 PM (14 years, 10 months ago) |
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Bump. Anyone?
-------------------- “Let’s put it this way – to lump psychedelic mushrooms into the same group as methamphetamine is like lumping the Bible into the same group as Mein Kampf.
I mean shit; they’re both books, right?”
Joe Rogan
R.I.P. - "Bones" - One of the greatest people I've ever had the pleasure of getting to know and become friends with.
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fungisfarmer
Stranger

Registered: 01/06/09
Posts: 418
Last seen: 10 years, 29 days
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Re: Sublicious Compost pasteurized forever? [Re: cookeman]
#12041168 - 02/16/10 04:43 PM (14 years, 10 months ago) |
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I don't know but I was watching some show on tv about some commercial mushroom farm and they were talking about how they pastuerized for a looong time at around 160 or whatever. Could be that it's better to pastuerize for longer but you can get away with doing it for like an hour and a half or so which makes it a lot easier for most people that don't have specialized equipment.
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dread
Power Ranger


Registered: 09/03/07
Posts: 229
Last seen: 10 years, 3 months
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Re: Sublicious Compost pasteurized forever? [Re: fungisfarmer]
#12041225 - 02/16/10 04:49 PM (14 years, 10 months ago) |
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I suppose if you pasteurizing for commercial purposes then you would do it in bigger amounts and need to do it longer for all the extra bulk? Just a guess.
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Tangich



Registered: 10/28/09
Posts: 8,723
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Re: Sublicious Compost pasteurized forever? [Re: dread]
#12041258 - 02/16/10 04:54 PM (14 years, 10 months ago) |
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The way I understand it, pasteurization is mainly used to kill mold spores, while leaving bacterial endospores intact. So if the bag is sealed, no mold spores are introduced, and the substrate will remain contaminate free. When you open it and mix it with spawn, some unwanted spores will inevitably come in contact with the substrate, but hopefully mushroom mycelium overtakes it before the molds. And the beneficial bacteria already in the compost help to ensure that.
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bare.whiterabbit
Lapin Blanc



Registered: 11/29/09
Posts: 912
Loc: The Microwave
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Re: Sublicious Compost pasteurized forever? [Re: dread]
#12041279 - 02/16/10 04:57 PM (14 years, 10 months ago) |
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For a small pressure cooker size batch, an hour and half is all you need, if you're adding Hydrated Lime. If you're just straight pasteurizing I think you'd have to cook it longer to kill off the bad contams. That's just my take though.
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RogerRabbit
Bans for Pleasure


Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 1 year, 10 months
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My experience is that pasteurized manure or compost lasts about three to four weeks and then gets stinky. If sterilized, it will last much longer. RR
-------------------- Download Let's Grow Mushrooms
semper in excretia sumus solim profundum variat
"I've never had a failed experiment. I've only discovered 10,000 methods which do not work."
Thomas Edison
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cookeman
Live and let live



Registered: 10/26/05
Posts: 1,077
Last seen: 11 years, 9 months
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Re: Sublicious Compost pasteurized forever? [Re: RogerRabbit]
#12042462 - 02/16/10 07:31 PM (14 years, 10 months ago) |
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So you think its actually sterilized instead of pasteurized? The fact that it gets "stinky" means that its brewing with contaminants right?
On another note, welcome back RR. Missed your posts for almost a WEEK!
Edited by cookeman (02/16/10 07:31 PM)
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