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OfflineShaw
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effect of light on contaminants during incubation.
    #1010294 - 10/31/02 03:23 PM (15 years, 1 month ago)

it's been a while since i was in biology. Are there any contaminants which require light to reproduce? I know there are some photosynthetic bacteria, but i think they were all in the ocean. For the incubator in progress of being built, i was wondering if preventing light from getting in would have any affect on stalling any contaminants untill full colonization of spawn. I have noticed that many times it apears that the contamination origionates on the edge of the substrait where light permiates.


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Edited by Shaw (10/31/02 03:27 PM)


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OfflineGlacius
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Re: effect of light on contaminants during incubation. [Re: Shaw]
    #1010362 - 10/31/02 03:50 PM (15 years, 1 month ago)

Thats is a very good question!! Do some experimenting, this might revolutionize mushrooms cultivation:) Very good idea. Hopefully someone knows something about it.


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OfflineShaw
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Re: effect of light on contaminants during incubation. [Re: Glacius]
    #1011472 - 10/31/02 11:08 PM (15 years, 1 month ago)

I really don't feel like cultivating and innoculating cultures of unknown contaminants of unknown toxcisity, not to mention compramizing the sterility of my lab. I'll go ahead and skip the experiments and do some net research if i get to it.


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OfflineGlacius
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Re: effect of light on contaminants during incubation. [Re: Shaw]
    #1013063 - 11/01/02 01:25 PM (15 years, 1 month ago)

Thats a good idea.


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Offlinetchyted
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Re: effect of light on contaminants during incubation. [Re: Shaw]
    #1014264 - 11/01/02 10:30 PM (15 years, 1 month ago)

i think you would be more likely to exclude contams by introducing light, rather than blocking it. particularly ultraviolet light. the proper bulbs are used for various types of sterilizers.

in nature one of the way she eliminates contams is to shine the sun on them.


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Offlinehsalf
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Re: effect of light on contaminants during incubation. [Re: tchyted]
    #1014386 - 11/01/02 11:12 PM (15 years, 1 month ago)

A bit of science & cosmic sense. Yep, yep.


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Offlinehsalf
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Re: effect of light on contaminants during incubation. [Re: Shaw]
    #1014405 - 11/01/02 11:18 PM (15 years, 1 month ago)

Surely we must have  a friend or 2 who's down but can't afford to risk it. Why not have 'em grow some shitake, or agricus. they could do experiments there. Though what tchyted said is true. Still be kinda neat.  :cool:


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OfflineShaw
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Re: effect of light on contaminants during incubation. [Re: tchyted]
    #1014423 - 11/01/02 11:25 PM (15 years, 1 month ago)

The uv lighting would kill the mycelium as well. It would be neat if there was some sort of focused light that could be directed to a contaminated area, but it would be more cost effective to just get a flow hood and reduce the problem. I was mainly wondering if i could use plexiglass as a door for an incubator.


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Offlinehsalf
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Re: effect of light on contaminants during incubation. [Re: Shaw]
    #1014634 - 11/02/02 12:54 AM (15 years, 1 month ago)

Oops got overexcited 'bout the idea.(But why buy one when you can make one at 1/2 price?) Didn't make a mess though.
Anyways... I'd incubate in darkness. If algae isn't only in the ocean then its a safe bet that other photosynthics aren't as well, eh? Cover the plexi while not in use. Plexiglass has been used a bit here :smile: under incandesants. And I don't ever remember reading a post about one melting. 


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OfflineCoolMojo
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Registered: 10/27/01
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Re: effect of light on contaminants during incubation. [Re: hsalf]
    #1016911 - 11/02/02 11:46 PM (15 years, 1 month ago)

Most contams are killed by sunlight. The amount of U.V. light that will kill most contams is lower then what is needed to kill mycelium. As for algae being photo sensative. Well yes thats true but also remember that mycelium and algae form a symbiotic relationship and exchange nutrients to each other to survive it places that neither could alone. This relationship creates what is known as linchens. So algae and shrooms are actually really good friends in alot of ways :smile:


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