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Wronguy
Registered: 03/05/05
Posts: 4,450
Last seen: 13 years, 6 months
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Possible LC contamination
#5226054 - 01/26/06 01:23 PM (18 years, 11 months ago) |
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First of all let me tell you that I'm pretty good at spotting contaminates in liquid cultures. This is kind of throwing me for a loop though. I have a few liquid cultures that are showing signs of what I construe as mycelium, but appears to have a tissue structure.
The areas of concern are white, round, and floating at the top of the LC. The appear to have some characteristics of mycelium, but I'm just not sure. These liquid cultures were made from light malt extract and dextrose. This particular one has been incubating for 16 days.
Here are some photos. I do apologize, as some of these are not quite as clear as I would have liked.




Any insight would be greatly appreciated. Thank you.
P.S. This is probably the longest I have ever incubated an LC. Maybe these guys are just overdone. Just a thought.
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Liquidkick
H2O
Registered: 05/03/02
Posts: 2,635
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Re: Possible LC contamination [Re: Wronguy]
#5226363 - 01/26/06 02:46 PM (18 years, 11 months ago) |
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I have had 1 or two jars do the same. I simply left it to see what happened. One turend a nice dark green color, the other one just remained white. So i am guessing it could be mycelium. I would definitely test out that jar. On some grains first. I am going to do so.
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Wronguy
Registered: 03/05/05
Posts: 4,450
Last seen: 13 years, 6 months
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Re: Possible LC contamination [Re: Liquidkick]
#5226401 - 01/26/06 02:59 PM (18 years, 11 months ago) |
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Thanks for the first hand knowledge. I had two other jars that are also looking like this and one of them is turning green on me. Damn it! Oh well. The nice thing is that the contaminate, if that's what it is, appears to only be localized to the surface. This may provide an opportunity to extract mycelium without the contaminate. Kind of along the same lines as using agar to clean up a print.
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Liquidkick
H2O
Registered: 05/03/02
Posts: 2,635
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Re: Possible LC contamination [Re: Wronguy]
#5230637 - 01/27/06 11:00 AM (18 years, 11 months ago) |
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Yeah it only floats on the surface for me too...
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blackout


Registered: 07/16/00
Posts: 5,266
Last seen: 1 year, 2 months
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Re: Possible LC contamination [Re: Wronguy]
#5238361 - 01/29/06 12:18 PM (18 years, 11 months ago) |
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Quote:
Wronguy said:The nice thing is that the contaminate, if that's what it is, appears to only be localized to the surface. This may provide an opportunity to extract mycelium without the contaminate.
I have had a lot of these recently. I would not chance trying to get good myc, since it is a liquid it is far easier for it to disperse throughout the liquid. I would just toss it. I am no longer using jars with filter discs, they nearly all fail on me lately.
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RemainRandom50
Do You Need ToKnow Me?
Registered: 01/15/06
Posts: 1,695
Last seen: 15 years, 9 months
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Re: Possible LC contamination [Re: blackout]
#5238606 - 01/29/06 01:21 PM (18 years, 11 months ago) |
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16 days does seem massively long, isnt it only supposed to be for the most a week?
-------------------- At times I get consumed by my everyday life and will leave the Shroomery. Yet, every time drugs come falling into my life for fun.....I always think about the Shroomery and then I'm back!
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blackout


Registered: 07/16/00
Posts: 5,266
Last seen: 1 year, 2 months
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I have had LCs take a month to show any growth. usually it is 1 week after the first signs of growth.
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Oatman2000
-=Outa Space=-



Registered: 05/10/05
Posts: 2,877
Loc: Planetary Nebula
Last seen: 2 years, 4 months
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Re: Possible LC contamination [Re: blackout]
#5259949 - 02/03/06 04:47 PM (18 years, 11 months ago) |
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i have been having issues of my myc turning red/pinkish
anyone else? i actually have fully grown PINK cakes. wanana see?
--------------------
Spawning to COIR
My Chocolate Recipe
WBS QUART SPAWN JAR PREPERATION
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4-PO-DMT; 4-phosphoryloxy-N,N-dimethltryptamine
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gema
Freedom from the Known

Registered: 10/24/04
Posts: 1,767
Loc: t(here)
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Re: Possible LC contamination [Re: Wronguy]
#5260761 - 02/03/06 09:01 PM (18 years, 11 months ago) |
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That solution is too dark for a LC. 16 days incubating is also too long. If in doubt, throw it out, I would. You wouldn't want to waste another month knocking up jars and waiting for myc to show up.
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agar
old hand


Registered: 11/21/04
Posts: 9,056
Loc: Somewhere Else
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Re: Possible LC contamination [Re: Wronguy]
#5261165 - 02/03/06 11:07 PM (18 years, 11 months ago) |
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If it's snow WHITE. It's right. 
If you don't stir or agitate one every day, myc gets to the top & forms little islands that turn to thick pancakes. As, it has better gas exchange on the surface.
How, I test for LC contams, is to STOP stirring one.
If anything grows on the surface that isn't snow white.
It isn't RIGHT.
Most often contams show up as light gray / light blue growing on the surface.
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agar
old hand


Registered: 11/21/04
Posts: 9,056
Loc: Somewhere Else
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Re: Possible LC contamination [Re: Oatman2000]
#5261205 - 02/03/06 11:16 PM (18 years, 11 months ago) |
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Pink on an LC surface is most often either Cinnamon or Lipstick mold
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Wronguy
Registered: 03/05/05
Posts: 4,450
Last seen: 13 years, 6 months
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Re: Possible LC contamination [Re: agar]
#5261840 - 02/04/06 08:08 AM (18 years, 11 months ago) |
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Thanks Agar. I'm waiting on stir bars right now and I've been neglecting to swirl them around. I had a few pure white areas that have turned green on me, but that one seems to be doing just fine. I appreciate the photos.
16 days is a bit long but I've let some liquid cultures go for this long before and they have serious concentrations of mycelium. They make for really good growth in spawn bags.
Gema, as far as the color is concerned, the color is correct. I've made probably 20-30 liquid cultures using light malt extract and dextrose and they all have this consistent color. My typical incubation period is 7 days. I use 10 grams of each ingredient per 4 cups of water. The color is likely derived from the consistency of the light malt extract.
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