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Mushrooms, Mycology and Psychedelics > Advanced Mycology
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petri dishes turning blue in fridge...
    #7125564 -

Hey Gang,

About 6 weeks ago I put my petri dishes in the fridge to stop the growth, as I was not ready for the next step of putting them to grain, etc. Now they have gathered much condensation and parts are turning blue. Are they ruined? Should I just take them out of the fridge and let them heat up again to keep growing?


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Flipside13
- I intend to live forever. So far, so good.

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Re: petri dishes turning blue in fridge... [Re: flipside13]
    #7125739 -

Yes. Some species of mycelium bruises blue when stressed. It's common for petri dishes in the refrigerator to bruise. The condensation is caused by the temperature in the refrigerator not holding steady. It's a good idea to put the petri dishes into an insulated container, such as a small picnic chest or ice chest, and then put that into the refrigerator. It will slow down the temperature oscillations.
RR


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Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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Re: petri dishes turning blue in fridge... [Re: RogerRabbit]
    #7126645 -

Hey RR,
Good to hear from you. Was that 'yes' to ruined or heat them up to keep growing?

The vid is great BTW. I have used several teks from it. ;-)


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Flipside13
- I intend to live forever. So far, so good.

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Re: petri dishes turning blue in fridge... [Re: flipside13]
    #7127804 -

As long as the blue is bruising, they're not ruined. They'll recover when you return them to room temperature. Wait until the mycelium begins to grow, and then take a fresh sample from the new growth at the leading edge of the mycelium. Transfer it to a new dish, and then use that dish to inoculate further projects.

Thanks for the comments on the video. I'm glad it's helping with your projects.
RR


--------------------
Download Let's Grow Mushrooms



semper in excretia sumus solim profundum variat

"I've never had a failed experiment.  I've only discovered 10,000 methods which do not work."
Thomas Edison

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Re: petri dishes turning blue in fridge... [Re: RogerRabbit]
    #7129396 -

Cool, thanks my friend.


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Flipside13
- I intend to live forever. So far, so good.

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Re: petri dishes turning blue in fridge... [Re: flipside13]
    #7148895 -

WOW I read thread at the perfect time!!  I was in doubt and threw out maybe 10 petri dishes today :smile:  Live and learn!

Edit:  Thanks RR Yenny and I ordered the video today! 


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(\__/)
( -'.'-)
(")_(") Mr. Bunny supports: Mike Gravel '08

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Re: petri dishes turning blue in fridge... [Re: flipside13]
    #7179355 -

what do they look like up close, gotta camera?
blue is probably bacterial contamination, caught whilst in the fridge. what else you got in there, it may be time for a cleanout :tongue:


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buh

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Re: petri dishes turning blue in fridge... [Re: RogerRabbit]
    #7179411 -

RogerRabbit said:
As long as the blue is bruising, they're not ruined.  They'll recover when you return them to room temperature. Wait until the mycelium begins to grow, and then take a fresh sample from the new growth at the leading edge of the mycelium.  Transfer it to a new dish, and then use that dish to inoculate further projects.

Thanks for the comments on the video.  I'm glad it's helping with your projects.
RR

shows how much i know :rolleyes: but let's see a pic anyway


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buh

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Mushrooms, Mycology and Psychedelics > Advanced Mycology
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