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ifyoungmichaeldont
Stranger
Registered: 11/30/16
Posts: 8
Last seen: 7 years, 6 months
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Possible pink/purple contamination
#24255186 - 04/18/17 07:12 PM (7 years, 8 months ago) |
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Hey guys, I've been colonizing my PF tek jars for the past week (started 4/9.) Unfortunately today I was watching my jars and I saw what looked like a contaminant. Very slightly purple in color.
Contamination may result from either improperly pasteurized jars or improper sterilization of the spore syringe before inoculation.

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Mad Season
hookers and blackjack



Registered: 09/16/12
Posts: 12,666
Loc: Canada
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Pf tek doesn't get pasteurised.. It's supposed to be sterilized.
There's also other aspects.. Like it was in the spore syringe, or just hitched a ride in if you did it in open air.
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ifyoungmichaeldont
Stranger
Registered: 11/30/16
Posts: 8
Last seen: 7 years, 6 months
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Re: Possible pink/purple contamination [Re: Mad Season]
#24256384 - 04/19/17 07:33 AM (7 years, 8 months ago) |
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Lol sorry wrong word choice. I cooked the jars in a pot under a light simmer for about 70-80 minutes. It is possible that extra water leaked into the jars during the sterilization.
I used grinded up brown rice to make the flour I used. In this case would you recommend pasteurizing the grain flour or just buying preground brf to avoid contaminants?
I'm worried more about wether it is actually a contaminant or something else, it's still not as developed as many other pink/purple contaminants, however, the jar is still very early on in the colonization process. (10 days)
At first I was worried about the possibility of the mold being Fusarium sporothichiode, but doesn't it only grow primarily on grain spawn?
I'm interested in figuring out what it could be. I've seen many jars with even more discoloration than this being deemed as "edible" so I wanted to see what people think, could it be nothing or should I toss it?
Right now I'm gonna hold on to them and see how they progress. When they birth I will take a look at the contamination and see what's going on.
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Mad Season
hookers and blackjack



Registered: 09/16/12
Posts: 12,666
Loc: Canada
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Without a doubt it's a mold with pink/purple spores and white mycelium, just like fusarium. Fusarium has been known to grow both in pf tek and grains.
Your sterilisation procedure would have killed it for sure, since it dies at an exposure of 130F for 30 minutes.
Thus it came in after the sterilisation.. Either in the techniques, or the syringe itself.
Fusarium is filled with mycotoxins, and if you open it, given enough exposure, it could potentially send you into the hospital. Personally I wouldn't be opening that jar in your house, or any confined space for that matter. That is a jar destined for the trash.
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