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Shop: North Spore Bulk Substrate   Original Sensible Seeds Bulk Cannabis Seeds   Mushroom-Hut Substrate Mix

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Invisiblemycocurious
Mike O. Kuerias
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Registered: 02/09/07
Posts: 1,265
Butyric acid in substrate...
    #7515732 - 10/14/07 01:00 PM (16 years, 3 months ago)

(RR - your feedback would be appreciated)

As I finished spawning the last tray of my current run my wife noticed that the batch of compost I was using had a distinct sour milk smell after it was composted.  The smell didn't manifest itself until after it was steam pasteurized, so I'm a little dubious on if the bacterial contamination is still present or if my wife is just smelling all the butyric acid by-product "remains".

Either way, the real question is just how bad will the butyric acid be on the colonizing mycelium...  :shrug:  Ultimately I know what should be done but I'm curious to see how it'll end up...

Sucks to lose a perfect run to shoddy substrate.  :stars:


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:justdontknow: Don't mistake my tone for a "matter-of-fact" attitude.  I'm just presenting what I believe to be correct, until I'm corrected...

- How Myco-Curious Prepares Coir & Compost Substrates
- How Myco-Curious Builds A Bulk Humidifier
- How Myco-Curious Builds An Automated Greenhouse
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figgusfiddus said:
Keep in mind that inoculating or whatever in front of a flow hood won't help your bad substrate, your bad inoculant, your bad sterile procedure, etc. etc. etc. It's not a +3 flowhood of magic, it's just a tool.


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OfflineRogerRabbitM
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Re: Butyric acid in substrate... [Re: mycocurious]
    #7515849 - 10/14/07 01:34 PM (16 years, 3 months ago)

If it was pasteurized, it should be OK. Bacteria isn't usually a problem with bulk substrates anyway.
RR


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Offlinexaxphaanes
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Re: Butyric acid in substrate... [Re: mycocurious]
    #7515857 - 10/14/07 01:36 PM (16 years, 3 months ago)

Hmm strange that you didn't smell it before the steam.Usually you can smell it pretty bad when you have Anaerobic conditions within a compost pile.Personally i wouldn't use it for mycelium.


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"Anything i say is fictional"
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Invisiblemycocurious
Mike O. Kuerias
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Registered: 02/09/07
Posts: 1,265
Re: Butyric acid in substrate... [Re: xaxphaanes]
    #7516002 - 10/14/07 02:23 PM (16 years, 3 months ago)

It is odd that the smell didn't "bloom" until this morning after being steam pasteurized (60 minutes @ 155(F)) last night...you'd think I'd have noticed it when it was harvested, or when I had it sun-drying on my patio...or at least when I hydrated it again last night.


--------------------
:justdontknow: Don't mistake my tone for a "matter-of-fact" attitude.  I'm just presenting what I believe to be correct, until I'm corrected...

- How Myco-Curious Prepares Coir & Compost Substrates
- How Myco-Curious Builds A Bulk Humidifier
- How Myco-Curious Builds An Automated Greenhouse
------------------------------------
figgusfiddus said:
Keep in mind that inoculating or whatever in front of a flow hood won't help your bad substrate, your bad inoculant, your bad sterile procedure, etc. etc. etc. It's not a +3 flowhood of magic, it's just a tool.


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Offlinecroptop30
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Registered: 09/27/07
Posts: 37
Last seen: 16 years, 2 months
Re: Butyric acid in substrate... [Re: mycocurious]
    #7516226 - 10/14/07 03:25 PM (16 years, 3 months ago)

Well I usually have the same problem but I always used to think my bulk substate was contaminated cause of the smell. But It never really smelled like Ammonia like contamination usually smells but I ended up throwing out alot potentially good casing because I thought they were screwed. As long as you don't actually see contamination and you do see healthy mycelieum poking through the surface your probably good. I have had that smell right up until the first flush at times and then eventually the smell turned to your typical earthy mushoom smell.


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