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Amazon Shop: ½ Pint Jars, Delicious Bacon, Wild Bird Seed

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Possible contam on WBS?
    #1691573 - 07/07/03 12:49 AM (14 years, 8 months ago)

Jars are all 90% colonized. Happened on three jars.

Wild bird seed, quart jars...

Great mycelium growth, except for these random orange spots. Some spots move and appear liquid , so I figure this might be mycelium piss?

HEre are pictures :

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Re: Possible contam on WBS? [Re: tekramrepus]
    #1691779 - 07/07/03 02:19 AM (14 years, 8 months ago)

from the shroomery.org contamination FAQ:

Wet Spot; Sour Rot - Bacillus sp.

In grain spawn jars, one commonly encounters Bacillus, which sometimes survives the sterilization process as heat resistant endospores. . A dull gray to mucus-like brownish slime characterized by a strong but foul odor variously described as smelling like rotting apples, dirty socks or burnt bacon. Bacillus makes uncolonized grain appear excessively wet, hence the name "Wet Spot". Pallid to whitish ridges along the margins of individual grain kernels characterize this contaminant. Bacillus primarily reproduces through simple cell division. In times of adverse environmental conditions, especially heat, a single hardened spore forms within each parent cell body - bacterial endospores, which can survive high temperatures for prolonged time.
The most practical method for eliminating bacterial endospores involves soaking the grain at room temperature 12 - 24 hours prior to sterilization. Endospores, if viable, will germinate within that time frame and then be susceptible to standard sterilization procedures. And, new endospores won't form in the moist environment of the resting jar of grain

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Re: Possible contam on WBS? [Re: chineseguy]
    #1692883 - 07/07/03 01:41 PM (14 years, 8 months ago)

It's not easy to tell. Wait a week, if the spots get larger you should toss it.


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Amazon Shop: ½ Pint Jars, Delicious Bacon, Wild Bird Seed

Mushrooms, Mycology and Psychedelics >> Contamination Forum

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