Pink infection - interesting

[H0phead]

I found an interesting colony of what I believe to be wild yeast in my hefeweizen this morning.

Original yeast was Wyeasy 3068. I fermented 9 days @65

I'm fairy certain the source was a dirty line which I've since replaced.

Any thoughts from the crowd? Seen pink colonies before?

 

[H0phead]

I found an interesting colony of what I believe to be wild yeast in my hefeweizen this morning.

Original yeast was Wyeasy 3068. I fermented 9 days @65

I'm fairy certain the source was a dirty line which I've since replaced.

No off odors (banana esters present in aroma)

I didn't sample it yet for off flavors.

Any thoughts from the crowd? Seen pink colonies before?
View attachment 645632 View attachment 645633

 

[bucketnative]

That doesn't necessarily look like an infection to me. I have seen orange tinged yeast adhering to the walls of the fermenter before. I think it is probably just some component of the beer that has colored the yeast deposits a bit.

 

[day_trippr]

Agreed, that looks like a normal collection of fermentation byproducts...

Cheers!

 

[ba-brewer]

The stuff clinging on the side looks fairly normal, looks like a combination of hop junk and yeast.

The cylindrical thing floating in the first picture looks weird. Is that the plastic "smack pack" from the yeast pouch?

 

[kh54s10]

I don't see anything that looks like infection other than the clear plastic looking thing in the top just left of center and something that looks like overgrown single cell organisms in line from the lower center angling up to the right. And what looks like a straw of some sort dipping into the beer.

 

[RPh_Guy]

The cylindrical thing floating in the first picture looks weird. Is that the plastic "smack pack" from the yeast pouch?

I'm also wondering. It looks like some kind of object, but not contamination.

 

[ApolloSimcoe]

It might be a top draw system

 

[ba-brewer]

that seem like a good possibility @ApolloSimcoe, just noticed the down tube in one of the other pics.

 

[mashpaddled]

Agree I do not think that is an infection but light hitting the yeast in a way that makes it look pink.

OTOH: the bacteria that makes pink slime in your shower actually can be a rare beer infector but it does not make your beer turn pink.

 

[RPh_Guy]

the bacteria that makes pink slime in your shower actually can be a rare beer infector...

Serratia contaminating beer? You got a source for that?

Alcohol generally kills/inhibits enteric gram negatives.

 

[Vale71]

The chance of finished beer being succesfully infected are close to nothing. Fermenting wort can be affected though and Serratia have been found in the early stages of spontaneous fermentations.

https://www.researchgate.net/public...tion_-_bacteria_of_the_order_Enterobacterales
https://mmbr.asm.org/content/77/2/157

 

[RPh_Guy]

The chance of finished beer being succesfully infected are close to nothing. Fermenting wort can be affected though and Serratia have been found in the early stages of spontaneous fermentations.

https://www.researchgate.net/public...tion_-_bacteria_of_the_order_Enterobacterales
https://mmbr.asm.org/content/77/2/157

Thanks!

 

[Vale71]

On the other hand Serratia would cause some pretty funky aromas, so I think the chances that the OP actually got his beer infected in the early stages of fermentation are pretty slim. It's probably just a trick of the lighting.

 

[Bilsch]

Did you use any Brewtan B in the mash or boil?

 

[kh54s10]

OP asks the question on Wednesday and hasn't been back since????

 

[day_trippr]

happens all the time on hbt...

 

[Alex4mula]

The floating thing looks like a Tilt hydrometer. Yes beer looks fine.