Pink growth - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Pink growth

Reply
 
Thread Tools
Old 05-18-2012, 08:42 PM   #1
rednekhippiemotrcyclfreak
Recipes 
 
Apr 2008
Tennessee
Posts: 194
Liked 3 Times on 3 Posts



Found this a couple of brews back when I was getting ready to aerate. Fortunately I had a clean spare.
__________________
NB Pirate's Plunder India Dark Ale - needs more hops.
NB Black IPA - bumped dry hop from 2 is to 5 oz. I'm pretty sure that 1 oz per gallon is my new minimum for dry hopping.

 
Reply With Quote
Old 05-18-2012, 08:48 PM   #2
Greenbasterd
Recipes 
 
Feb 2012
Van, BC
Posts: 274
Liked 20 Times on 15 Posts


is that a bucket lid? and are you by any chance a giant?

 
Reply With Quote
Old 05-18-2012, 09:09 PM   #3
larrynoz
Recipes 
 
Dec 2009
NY, New Jork
Posts: 73
Liked 2 Times on 1 Posts


weird

 
Reply With Quote
Old 05-18-2012, 11:06 PM   #4
rednekhippiemotrcyclfreak
Recipes 
 
Apr 2008
Tennessee
Posts: 194
Liked 3 Times on 3 Posts


It's a HEPA air line filter, bit I am big for my size.
__________________
NB Pirate's Plunder India Dark Ale - needs more hops.
NB Black IPA - bumped dry hop from 2 is to 5 oz. I'm pretty sure that 1 oz per gallon is my new minimum for dry hopping.

 
Reply With Quote
Old 05-18-2012, 11:07 PM   #5
theredben
Recipes 
 
Dec 2010
Langley, BC
Posts: 934
Liked 24 Times on 23 Posts


There is a pink bacterium, I can't remember the latin name, that is commonly used to educate students about sanitation. That species of pink bacteria is harmless, and your sample looks the same.

 
Reply With Quote
Old 05-18-2012, 11:11 PM   #6
H-ost
Recipes 
 
Jul 2011
Bellevue, WA
Posts: 1,746
Liked 72 Times on 53 Posts


This may sound gross, but if I don't clean my bathtub twice a month a ton of that pink stuff builds up. Don't know why, I have lived in this area for most of my life and never seen it anywhere but in this house.
__________________
"Wisdom isn't "thinking hard". It's experience." - PassedPawn

 
Reply With Quote
Old 05-19-2012, 12:35 AM   #7
day_trippr
Recipes 
 
May 2011
Stow, MA
Posts: 17,156
Liked 2924 Times on 2183 Posts


Quote:
Originally Posted by Greenbasterd View Post
is that a bucket lid? and are you by any chance a giant?
LOL! It's a filter for his aeration rig. Apparently it successfully trapped some Serratia marcesens...

Cheers!

 
Reply With Quote
Old 05-19-2012, 02:49 AM   #8
sirsloop
Recipes 
 
Jun 2006
South River, NJ
Posts: 2,587
Liked 20 Times on 17 Posts


yeah its just some **** growing on there... I get a reddish bacteria growing inside my white bathroom cups unless I turn them upside down after drinking out of them.
__________________
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~
~~~~~~~~~~~___//_ ____________________________~~~~~~~~~~~
~~~~~~~~~_/ [][]| | /```\/```\/```\/```\/```\ |~~~~~~~~~~
~~~~~~~_/_______| |____NOW TRIPLE HOPPED______|~~~~~~~~~~
~~~___/[_]| 00 /| | \,,,/\,,,/\,,,/\,,,/\,,,/ |~~~~~~~~~~
~~|___|___|___/_| |___________________________|~~~~~~~~~~
~~|=(*)[________]==(*)(*)=| \________/=(*)(*)=|~~~~~~~~~~

 
Reply With Quote
Old 05-19-2012, 05:01 AM   #9
TimpanogosSlim
Recipes 
 
Mar 2012
Orem, UT
Posts: 962
Liked 83 Times on 74 Posts


Quote:
Originally Posted by theredben View Post
There is a pink bacterium, I can't remember the latin name, that is commonly used to educate students about sanitation. That species of pink bacteria is harmless, and your sample looks the same.
Usually that would be fusarium, a fungus.

Which brings up something from the "things you never knew you didn't know, and will wish you didn't know now that you do" file.

Malted grains pretty much always carry fusarium on their surface. The malting process makes it unavoidable, and the drying process doesn't kill it.

I've heard that some brewing books recommend against cracking your grain the same day in the same room as you are going to brew, because that will throw a lot of fusarium spores into the air which will then land on every surface in the room.

fusarium survives mashing but not boiling.

If this were an actual problem, though, your beer would be pink.

 
Reply With Quote
Old 05-21-2012, 07:08 PM   #10
theredben
Recipes 
 
Dec 2010
Langley, BC
Posts: 934
Liked 24 Times on 23 Posts


TimpanogosSlim - I was actually referring to the Serratia marcesens mentioned above. While Fusarium sp. can often looks pink in culture (i.e. petri dish), they will not appear pink when growing in the environment.

Just so future readers do not become confused, the reason you do not crush your grain in the same room as you brew the beer is due to Lactobacillus, a bacteria, which can grow in beer quite well, while Fusarium does not grow in beer.

 
Reply With Quote


Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Ph Strips...what does pink/purple mean? Yambor44 Equipment/Sanitation 4 10-01-2009 08:23 AM
Growth in tubing! [email protected] Equipment/Sanitation 2 09-08-2008 03:23 AM
Pink Star San jcarson83 Equipment/Sanitation 24 07-25-2008 09:21 AM


Forum Jump