Powdery Materials - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Powdery Materials

Reply
 
Thread Tools
Old 12-18-2013, 01:54 AM   #1
bbbrew
Recipes 
 
Feb 2010
OHIO - Cleveland
Posts: 113
Liked 6 Times on 6 Posts



Could anyone help me diagnose what this powdery material might be at the top of the funnel separator?

I made a batch of IPA using WY1217 (West Coast IPA) and wanted to start some slants from it. Obviously, I had already brewed and should have started with the original stuff but...

After racking the beer from the primary, and adding about a gallon of cooled, boiled H2O to the primary, I filled this conical funnel separator. After about a week, I had just found some Agar Agar and made my starter tubes. I pulled some of the yeast from the conical and made the slants. About 3 days later, I noticed this powdery material at the top of the conical. And low and behold the same powdery white material showed up in my slants.

Has anyone else seen this and if so, have you an idea what it might be? Is it nothing to worry about or should I take a small dose and skip the flu shot this year ?

http://www.homebrewtalk.com/photo/wh...-be-61630.html

Thanks, BB

 
Reply With Quote
Old 12-18-2013, 03:15 PM   #2
ColoHox
Compulsive Hand Washer
HBT_SUPPORTER.png
 
ColoHox's Avatar
Recipes 
 
Oct 2011
Fort Collins, CO
Posts: 1,884
Liked 415 Times on 293 Posts


Are you describing what looks to be growing on the glass, just beneath the foil?

Mold is usually described as powdery. Those slants are a no-go if they are contaminated.

I had a batch with some mold and I could taste it, it was very apparent. Have you sampled it?
__________________
Bacteria are the only culture some people have.

 
Reply With Quote
Old 12-19-2013, 04:27 AM   #3
bbbrew
Recipes 
 
Feb 2010
OHIO - Cleveland
Posts: 113
Liked 6 Times on 6 Posts


Yes, I am talking about what is growing on the top of the glass. Didn't think I wanted to taste it but ...

As far as the slants go, can this be cleaned and then re-autoclaved?

Thanks,
BB

joshjv Likes This 
Reply With Quote
Old 12-19-2013, 09:23 PM   #4
joshjv
Recipes 
 
Jul 2013
Plymouth, MI
Posts: 208
Liked 22 Times on 14 Posts


Quote:
Originally Posted by bbbrew View Post
Yes, I am talking about what is growing on the top of the glass. Didn't think I wanted to taste it but ...

As far as the slants go, can this be cleaned and then re-autoclaved?

Thanks,
BB
Autoclave, or a pressure canner, ought to take care of anything that is left behind

 
Reply With Quote
Old 12-23-2013, 11:40 PM   #5
bbbrew
Recipes 
 
Feb 2010
OHIO - Cleveland
Posts: 113
Liked 6 Times on 6 Posts


I took a sample of this powdery stuff and put it in the scanning electron microscope to see what it looked like. Can any of you organic people able to tell me what this stuff is?

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Is this powdery mildew? disney7 Hops Growing 6 09-11-2013 09:33 AM
is this powdery mildew? neomantra Hops Growing 4 08-09-2013 11:39 AM
Powdery Mildew? jazzyfool Hops Growing 2 06-21-2012 06:11 PM
Powdery specialty grains Fizzycist Extract Brewing 2 02-05-2012 03:28 PM
Powdery substance on bottlecaps TheBone Bottling/Kegging 0 02-18-2008 04:38 PM


Forum Jump