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Shiro
Padwon



Registered: 06/16/14
Posts: 187
Last seen: 2 years, 2 months
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Is it yeast? Is it dry grain? Or is it another contam?
#27104818 - 12/23/20 08:04 PM (3 years, 1 month ago) |
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Some will say yeast, some will say dry grains, what will you say? I’m not convinced it’s yeast yet though I am sure they are failed and am going to dumb into compost I just made today for my outside grow. Will then pressurize jars to sterilize and have at it again! Images attached are of the subject matter. I have done plenty of digging through the web for what might be going on here. First thought was that it was yeast, though the clean pin point growth seen with yeast was not apparent in my jars. Might still be yeast though. I might add that when I brought my corn to field capacity which I’ve had no issue doing before, I had placed my corn on my big mesh screen to air dry. Though I did this outside in the snowing cold. To top it off I had forgotten about my corn outside for like 15 minutes but by then it was already frozen cold. So I LOADED COLD CORN 🌽 INTO MY JARA BEFORE PRESSURIZING. -I think this is the issue here. This is the largest vector of which I think is to blame, I might add that I did use 2 tbs gypsum for 10 quart jars. I have read that too much gypsum can dry out grains and somehow I keep coming across posts that also have this dusty dry grain issue of which seem to point towards not enough water in Kernel and too much gypsum. Though it would seem half of the jar is wet while the other half has this white chalky stuff. Note that some kernels have white specs though they are like on the inside of the kernel, almost like those white specs under your finger nail, if anyone has ever had this. Whereas yeast seems to have more of a literal white dot form outside the kernel, so it looks like I mean, I’ve never run across this before.. I used liquid culture to inoculate. In my still air box. All 20 jars look like this. I might also add they looked like this in just small portions immediately after removing from pressure cooker. Over the course of the last 2 weeks the white has taken over whole jar and started to leave a chalky substance on hat walks / outside of grain. Just doesn’t look like yeast, but if I could get a secondary opinion would be stoked.
-------------------- Let’s cultivate Agarikon!
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Eminence



Registered: 07/25/10
Posts: 16,627
Loc: Richmond, VA
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Re: Is it yeast? Is it dry grain? Or is it another contam? [Re: Shiro]
#27104831 - 12/23/20 08:12 PM (3 years, 1 month ago) |
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Any chance that could be the gypsum itself, showing up as the moisture is reabsorbed into the grain and the outside dries out? I haven't had this before, I don't use popcorn and I don't use gypsum on my spawn though, if I use it I just use it in my bulk substrate.
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Shiro
Padwon



Registered: 06/16/14
Posts: 187
Last seen: 2 years, 2 months
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Re: Is it yeast? Is it dry grain? Or is it another contam? [Re: Eminence]
#27104862 - 12/23/20 08:36 PM (3 years, 1 month ago) |
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I can try a run without gypsum. But all my runs prior to this had been just fine. I’d like to try and keep everything the same and see if it pops up again, minus the freezing of corn on accident after bringing to field capacity. But the slow visual appearance may be linked to grain drying out. I forgot to mention that most of the jars with this still have condensation inside on walls and moisture is def in there. But like not IN the kernel. Maybe I should not be so stubborn and be open to the idea of it actually being a yeasty contamination. I just don’t see those pin point specs common with yeast. Like mushrooms tho I suppose their could be multiple strains of yeast some that grow more liquidy, powder, pin point like, etc ...
-------------------- Let’s cultivate Agarikon!
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Tstone
St.of Circumstance



Registered: 10/16/18
Posts: 944
Loc: This Planet
Last seen: 25 days, 2 hours
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Ree: Is it yeast? Is it dry grain? Or is it another contam? [Re: Eminence]
#27104871 - 12/23/20 08:41 PM (3 years, 1 month ago) |
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I'm not a corn guy, however I use 2 heaping TBS of gypsum for 9-10 qts of finished, hydrated rye for soak.
Never had residue, talking over 2000 jars. You are correct, that yeast tends to have a , pin point sized speckled, freckled effect. However, that's the common one, there's absolutely a possibility that yeast may present itself in various ways.
No comments on you freezing your corn. To be honest, if uncertain before inoculation, toss it and redo. A few bucks of corn, and merely time, I'd redo them. Why even mess with them.
I had a single run in with yeast, 1 jar, it showed up about 30 hours after PC, and about 15 hours after a g2g transfer. Because I never had it, I wanted to it's progression. Myc destroyed the yeast, but I did toss the contents of the jar. Was 100% colonized,on time, not single metabolite, but tossed anyhow.
Guess a question is, have you always used the same gypsum? Some is more water soluable than others. If it's a different result with the same gypsum, it's not the gypsum.
Edited by Tstone (12/23/20 09:05 PM)
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Nichrome
I'm a torso!



Registered: 12/17/18
Posts: 6,577
Loc: Zone 5
Last seen: 21 hours, 19 minutes
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Re: Ree: Is it yeast? Is it dry grain? Or is it another contam? [Re: Tstone]
#27105033 - 12/23/20 11:18 PM (3 years, 1 month ago) |
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That's Tam city. Toss and start over.
-------------------- “Better to be deprived of food for three days, than tea for one.”
Freedom is not the right to do as you please, but the liberty to do as you should. ~Emerson
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