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Anonymous

Penicillin versus contamination?
    #2025478 - 10/20/03 02:24 PM (13 years, 10 months ago)

Would penicillin in the pf jars be a good anti-contaminant? Or are there spores in medicinal penicillin, so that you would end up with penicillin and not your desired fungus?

I was thinking of mixing something in the substrate, alternatively preparing the jars with some (either the whole jar, or the upper part where contaminations can enter).

Is this totally whack? It just sounds so great to use another fungal product to make growth easier.


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Invisiblemicro
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Re: Penicillin versus contamination? [Re: ]
    #2025511 - 10/20/03 02:33 PM (13 years, 10 months ago)

Medical penicillin is not alive; it's the extract from penicillum, a genus of fungi. It will prevent bacteria, but not other fungi.

Also -- You'd need to add it once the jars are cooled.

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Edited by micro (10/20/03 02:35 PM)


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Anonymous

Re: Penicillin versus contamination? [Re: micro]
    #2025684 - 10/20/03 03:16 PM (13 years, 10 months ago)

Yes, I've read that heat sterilization would kill off the penicillin. Would have to make the substrate slightly drier than normal, and then add some with sterile water afterwards. Might be counter productive to add something after sterilization though.

My friend had some problems with smelly contaminations, which I guess is bacteria. Probably due to sloppy sterilization.. He'll try it out on some jars if he can get hold of some.


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Re: Penicillin versus contamination? [Re: ]
    #2025714 - 10/20/03 03:23 PM (13 years, 10 months ago)

Cool. I don't know how you'd mix it into the jars, though, after you sterilize, unless you use quart jars and can shake them (or bags.) Good luck!

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Re: Penicillin versus contamination? [Re: micro]
    #2025779 - 10/20/03 03:42 PM (13 years, 10 months ago)

Oh, I just realized -- please realize whatever penicillin you put into the substrate could go into the mushrooms, so you'd be eating it, in effect. Might not be a good idea.

I PM'ed you, too.

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Re: Penicillin versus contamination? [Re: micro]
    #2025809 - 10/20/03 03:49 PM (13 years, 10 months ago)

For most people this wouldn't be a problem but some of us are allergic to Penicillin.

But even then I don't know if it's concentrated enough since medicinal penicillin is an extract of the bacteria, I believe.


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Anonymous

Re: Penicillin versus contamination? [Re: micro]
    #2025871 - 10/20/03 04:04 PM (13 years, 10 months ago)

Yeah, thought about that. It's probably wise to keep the amount relatively low compared to "active" dosages of penicillin. I suspect those are much higher than what would affect half a pint of substrate though. And then again, how much of that is deposited in the fruits? Don't think this is a big problem.

Thanks for the concern though.


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