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Offlinepaddo
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Can anybody tell me what this is?(PIC)
    #861350 - 09/03/02 11:45 AM (14 years, 3 months ago)

A couple of my petris have some stains on the agar, im sure that it isnt contamination because when it coagulated it had it already.....and it didnt grow.

here is a picture of it :




Hope somebody can give me some feedback


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Anonymous

Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861354 - 09/03/02 11:48 AM (14 years, 3 months ago)

Looks like Taz for Tazmania.


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OfflineMeneerCactus
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861358 - 09/03/02 11:50 AM (14 years, 3 months ago)

Seems love seeds to me ...


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"Millions of years of evolution just to .... light up a joint"


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Invisiblemickey_rourke
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861360 - 09/03/02 11:50 AM (14 years, 3 months ago)

If you're using homemade agar, it could easily be undissolved solids in the mix. That's what it looks like to me.


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Offlinepaddo
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Re: Can anybody tell me what this is?(PIC) [Re: mickey_rourke]
    #861367 - 09/03/02 11:54 AM (14 years, 3 months ago)

Quote:

If you're using homemade agar, it could easily be undissolved solids in the mix. That's what it looks like to me. 




Yep its home made :smile:
But could it do any harm if it is undissolved solids?
And what can i do in the future to prevent it?


Thanks,
Paddo 


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Invisiblemickey_rourke
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861372 - 09/03/02 11:58 AM (14 years, 3 months ago)

In reply to:

But could it do any harm if it is undissolved solids?



I don't think so. Others may have had different experiences though.

In reply to:

And what can i do in the future to prevent it?



This is what I do. After boiling and stirring the agar mixture, I strain the liquid into a canning jar. I then PC the jar to sterilize the agar for storage.

Hope this helps!


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Offlinepaddo
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Re: Can anybody tell me what this is?(PIC) [Re: mickey_rourke]
    #861377 - 09/03/02 12:01 PM (14 years, 3 months ago)

Quote:

This is what I do. After boiling and stirring the agar mixture, I strain the liquid into a canning jar. I then PC the jar to sterilize the agar for storage.





That is indeed a good way to do it!

Thanks for this great tip! :smile:


Paddo 


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Offlinezeronio
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861410 - 09/03/02 12:22 PM (14 years, 3 months ago)

It looks very similar to bacterial contamination. I saw this before in failed attempts to clone wild shrooms and tossed it.


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Offlinepaddo
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Re: Can anybody tell me what this is?(PIC) [Re: zeronio]
    #861415 - 09/03/02 12:26 PM (14 years, 3 months ago)

Hi,

no it cant be a contamination because it was there as soon as the agar coagulated.



Paddo :wink: 


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Invisiblemickey_rourke
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Re: Can anybody tell me what this is?(PIC) [Re: zeronio]
    #861420 - 09/03/02 12:29 PM (14 years, 3 months ago)

In reply to:

It looks very similar to bacterial contamination.



Yes, superficially it does appear to be a bacterial contaminant. What indicated to me that it wasn't was the fact that the "bacteria" definately appears to be under the surface of the agar and the fact that it was present immediately after the agar solidified. Whenever my agar projects are contaminated with bacteria (usually due to dirty tissue), the contamination is visible as a slightly raised layer on the surface of the agar. Since the bacteria produces a liquid, I'm assuming the protrusion is caused by surface tension.


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OfflineAnnoA
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861471 - 09/03/02 12:55 PM (14 years, 3 months ago)

Definitely looks either like bacterial contamination or yeast.
Watch it spread over the next days.


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Offlinepaddo
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Re: Can anybody tell me what this is?(PIC) [Re: Anno]
    #861575 - 09/03/02 01:29 PM (14 years, 3 months ago)

Well ill just have to wait and see....
But i dont think it is (or may i just dont want to admit it to my self  :tongue: )




Paddo :smile: 


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InvisibleDreaMaTrix
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861678 - 09/03/02 02:14 PM (14 years, 3 months ago)

I've seen that before too, its contamination. Did you get sterile petri's?? I know its a silly question  :smirk:
Bacteria

Good luck

 


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Offlinepaddo
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Re: Can anybody tell me what this is?(PIC) [Re: DreaMaTrix]
    #861700 - 09/03/02 02:22 PM (14 years, 3 months ago)

Yep it was sterile :wink: ,

But guy's :smile: above i wrote that this stain appeard when the agar solidified, so about 10 minuts after i pored the dishes with agar.
And it didnt get bigger or changed shape.

But ill just have to wait and see :wink:


Thanks for replying Dreamatrix! :smile: 


Edited by paddo (09/03/02 02:23 PM)


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InvisibleSumGuy
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861722 - 09/03/02 02:31 PM (14 years, 3 months ago)

why dont you just throw away those ones and use the other ones that dont have it... looks like bacterial to me as well... just throw it away no point in keeping it if you have others...


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Invisiblemickey_rourke
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #861723 - 09/03/02 02:32 PM (14 years, 3 months ago)

In reply to:

above i wrote that this stain appeard when the agar solidified, so about 10 minuts after i pored the dishes with agar.



There is no way bacteria or yeast could appear within ten minutes of pouring liquid agar. I still think it's undissolved ingredients in the mix.

Peace


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Offlinepaddo
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Re: Can anybody tell me what this is?(PIC) [Re: Anno]
    #861732 - 09/03/02 02:37 PM (14 years, 3 months ago)

So if it was yeast, would that be a bad thing?
and what can i do in the future to prevent that?
Also stir it verry good?


Thanks again :smile:

Paddo 


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Offlinepaddo
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #862836 - 09/04/02 05:49 AM (14 years, 3 months ago)

*bump* :smile: 


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OfflineAnnoA
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Re: Can anybody tell me what this is?(PIC) [Re: paddo]
    #862849 - 09/04/02 05:59 AM (14 years, 3 months ago)

Yiest is a bed thing if you want to cultivate mushroom mycelium, yes.

>and what can i do in the future to prevent that?

Be even more carefull when preparing agar.

How long did you sterilize the agar?


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Offlinepaddo
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Re: Can anybody tell me what this is?(PIC) [Re: Anno]
    #862863 - 09/04/02 06:11 AM (14 years, 3 months ago)

Ok Anno thanks! :smile:

I did know it was a bad thing when culitivating shrooms  :tongue:

But i thought maby because it was a little bit of the plate that is coverd with yiest that the other side may still be good to germinate the spores. and if the spores germinated, that i could transfer the wedge to another plate.

I sterilized for 30 min.

And i didnt use to much yiest (exactly 2 grams).



Paddo 


Edited by paddo (09/04/02 06:14 AM)


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