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Psilimax
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Yeast contamination
#27514697 - 10/23/21 07:16 AM (2 years, 6 months ago) |
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Have any growers experienced grain that is fully colonized but harboring a yeast still , producing mushrooms in the end? One of my jars of APE sat for a few days to long and started to smell funky like a brewery. I turned it out into a casserole dish and a few days later the smell of yeast is diminishing and it smells more like mushrooms there’s virulent white fluffy mycelium growth now. I’m going to case it and keep my fingers crossed.

Is it possible there’s a symbiotic relationship happening here? As the yeast runs out of sugars to digest in the grain and begins to diminish , the mycelium begins to overtake and digest the yeast. The alcohols produced by the yeast in turn keep other contamination at bay. At least that’s my hypothesis. Please share any similar experiences.
-------------------- “I would never trust an organization that would have me as a member .” - Groucho Marx -
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Benroxx
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Re: Yeast contamination [Re: Psilimax]
#27517016 - 10/25/21 02:20 AM (2 years, 6 months ago) |
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Is it possible that yeasts grew because of anoxic/not enough oxygen conditions, and while opening the jars you gave them more of it, then mycelium could grow easier and yeasts struggle, giving myc the opportunity to overgrow them?
-------------------- Sadly,no actual try at growing
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dyel


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Re: Yeast contamination [Re: Psilimax]
#27520125 - 10/27/21 12:00 PM (2 years, 6 months ago) |
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I'm facing a somewhat similar situation, grain jars started showing black spots and I was told it's was some black mold. Threw the jars in some drawer with plans of cleaning them once I have the time, went to check on them yesterday and one of the jars was all white with almost no black mold, guess I'll leave it for a couple more days and see how it goes.
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Benroxx
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Re: Yeast contamination [Re: dyel]
#27520153 - 10/27/21 12:26 PM (2 years, 6 months ago) |
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Mycelium if strong enough can overgrow some contams of they're "chemically weaker". Victory for the stronger antifungal.
-------------------- Sadly,no actual try at growing
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Psilimax
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Re: Yeast contamination [Re: Benroxx]
#27520462 - 10/27/21 04:55 PM (2 years, 6 months ago) |
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Yes that’s very plausible . In fact most likely. I’m not sure where the yeast came from. Sneaky little organism it was the only jar that contaminated out of several. It’s cased and there’s no smell of yeast now , only fluffy white mycelium and that sweet aroma of mycelium . Since it’s the advanced mycology forum , can the yeast and the mycelium possibly complete a symbolic relationship ? Or , is the poor little yeast getting parasitized by the big mean mushroom mycelium? Either way a contamination that goes away is neat!
-------------------- “I would never trust an organization that would have me as a member .” - Groucho Marx -
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Psilimax
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Re: Yeast contamination [Re: dyel]
#27520472 - 10/27/21 05:03 PM (2 years, 6 months ago) |
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Quote:
dyel said: I'm facing a somewhat similar situation, grain jars started showing black spots and I was told it's was some black mold. Threw the jars in some drawer with plans of cleaning them once I have the time, went to check on them yesterday and one of the jars was all white with almost no black mold, guess I'll leave it for a couple more days and see how it goes.
Ooo , uh , if I saw black mold I would incinerate that shit . Highly toxic . Yeast is not gonna make you sick or dead it’s in beer and bread and has a dirty yellow color but black mold shuts down construction projects office buildings housing projects and hospitals and requires professional abatement . It can be really nasty , please friend , don’t take chances with your health. Yeast is the only competing organisms I could allow as it’s in food .
-------------------- “I would never trust an organization that would have me as a member .” - Groucho Marx -
Edited by Psilimax (10/27/21 05:07 PM)
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Jawn849
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Re: Yeast contamination [Re: Psilimax]
#27520681 - 10/27/21 08:19 PM (2 years, 6 months ago) |
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Yeast isnt just one species. There are pathogenic yeasts as well, Cryptococcus can be fatal. but "yeast" pretty much just means a single celled fungus. It is even shown that fungi can switch between filamentous growth and a yeast at different times in life. The infamous S. cerevisiae of beer, biology, and bread is an ascomycete but yeasts can be basidiomycetes as well
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Benroxx
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Re: Yeast contamination [Re: Psilimax]
#27520945 - 10/28/21 01:21 AM (2 years, 6 months ago) |
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Man! I've forgotten a part of my previous post! Add ""can overgrow but just hide the contam, whom is still here and annoying""
-------------------- Sadly,no actual try at growing
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Psilimax
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Re: Yeast contamination [Re: Jawn849]
#27523223 - 10/29/21 06:47 PM (2 years, 6 months ago) |
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Quote:
Jawn849 said: Yeast isnt just one species. There are pathogenic yeasts as well, Cryptococcus can be fatal. but "yeast" pretty much just means a single celled fungus. It is even shown that fungi can switch between filamentous growth and a yeast at different times in life. The infamous S. cerevisiae of beer, biology, and bread is an ascomycete but yeasts can be basidiomycetes as well
Thanks for the time you took to educate me. I have some Wikipedia homework now 😁knowledge is power & appreciate you helping me to be empowered . I don’t have a good microscope so I can’t positively identify which kind except that I have brewed beer as a hobby and grew up with mama making fresh bread all the time and can recognize by the smell , Baker’s Or Brewer Yeast. Although it may still be there dormant I don’t detect a smell of it anymore and the mycelium has started coming up through the casing . I expect to get nice little APE shrooms sometime soon! The casserole dish belongs to a buddy of mine who left it after a potluck I’m going to return it to him full o shrooms and say “ something happened to the ambrosia salad you left “ 🤣
-------------------- “I would never trust an organization that would have me as a member .” - Groucho Marx -
Edited by Psilimax (10/29/21 06:51 PM)
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dyel


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Re: Yeast contamination [Re: Psilimax]
#27524911 - 10/31/21 05:01 AM (2 years, 6 months ago) |
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thanks for the concern friend, I'm keeping the jar closed and keeping it for the sake of curiosity. what would be the best mothod to clean up without loosing the jars and not risk contaminating the house? pc the jars before opening? or is there something faster? help appreciated
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PBJ710
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Re: Yeast contamination [Re: dyel]
#27524998 - 10/31/21 07:27 AM (2 years, 6 months ago) |
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Dump the contents outside, then wash with soap and water before reusing. There's no reason to waste the time & energy pressure cooking something that's going in the trash/compost pile anyhow.
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Psilimax
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Re: Yeast contamination [Re: PBJ710]
#27525054 - 10/31/21 08:21 AM (2 years, 6 months ago) |
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Quote:
PBJ710 said: Dump the contents outside, then wash with soap and water before reusing. There's no reason to waste the time & energy pressure cooking something that's going in the trash/compost pile anyhow.
Agreed . Use bleach . It’s cool to keep it to observe as long as you plan on dumping it . when it’s time to open it be upwind wear a real filter mask and gloves. Do it outside next to the trash . Aflatoxin which is what black mold makes Is nothing to fuck with . I’d throw the whole jar . Spooky !
-------------------- “I would never trust an organization that would have me as a member .” - Groucho Marx -
Edited by Psilimax (10/31/21 07:12 PM)
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