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02-05-2009, 03:16 PM
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#1
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Senior Member
Join Date: Feb 2009
Location: Blaine, MN
Posts: 136
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Overheated Yeast?
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I brewed a batch six 2 days ago, my first attempt with liquid yeast, Wyeast slap pack. The instructions on the package said to sanitize the bag. Not thinking, of course, I tossed the bag in my pot of sanitizing solution, HOT sanitizing solution. When I turned back, the bag had inflated to capacity, and I coud feel the liquid inside was hot. I ran it under cold water to cool it down and pitched it within 10 minutes. 2 days later no bubbles. I know, patience, patience, patience while waiting for fermentation, but I was wondering if anybody may have any insight to my boneheaded move. Did I kill it?
Thanks
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02-05-2009, 03:25 PM
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#2
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Senior Member
Join Date: Oct 2008
Location: ☁Scappoose, OR☂
Posts: 291
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Probably did kill it.
How hot was the solution and for how long was it in the solution?
That sucks. If you are ever not sure about the viability of your yeast (or, as in my case, if you ever use liquid yeat) do a starter. You'll increase the cell count, and you'll 'proof' the yeast (meaning you can tell if it is viable or not).
__________________
Beer, happy Produce of our Isle/Can sinewy Strength impart,
And wearied with Fatigue and Toil/Can cheer each manly Heart.
Labour and Art upheld by Thee/Successfully advance,
We quaff Thy balmy Juice with Glee/And Water leave to France.
Genius of Health, thy grateful Taste/Rivals the Cup of Jove,
And warms each English generous Breast/With Liberty and Love!
(Rev James Townley, 1751)
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02-05-2009, 03:28 PM
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#3
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I like 'em shaved
Join Date: Jul 2008
Location: Fort Mill, SC
Posts: 10,201
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Kind of depends on how hot you are talking about. But, considering you heated them up good then crash cooled them, I would say if they did survive, you pissed them off real bad.
I would definitely think about having another smack-pack at the ready. If you haven't seen any activity at all in 48 - 72 hours, then pitch the "fresh" one. As a matter of fact, it wouldn't hurt to go ahead and pitch another one if you have it just to make sure you don't give any nasties any time to establish themselves.
__________________
"I brew with a water cooler and some part from the toilet." - JohnnyO
"I do gravity feed the last gallon or two through my Therminator, but I expect you could suck start a Volkswagen before you could suck start one of these. - GilaMinumBeer
"..... Bull was right." - TXCurtis
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02-05-2009, 05:18 PM
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#4
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Cranky Old Guy
Join Date: Oct 2005
Location: Willamina & Oak Grove, Oregon, USA
Posts: 24,799
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I'd re-pitch if nothing is going by tomorrow. Most yeast can handle 100F OK, but not much more.
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02-05-2009, 07:03 PM
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#5
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Senior Member
Join Date: Aug 2008
Location: Portland OR
Posts: 1,457
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For the record, most no-rinse sanitizer solutions should not be hot. For instance iodine is volatile and will evaporate pretty quickly out of hot water, leaving you with only hot water and no sanitizer left in it.
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02-06-2009, 01:06 PM
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#6
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Senior Member
Join Date: Feb 2009
Location: Blaine, MN
Posts: 136
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Update
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All is well ( I think). Bubbling started at the 48 hr point, though not as vigorous as dry yeast. Also the rate seemed to slow faster. krausen visible through the sides of the bucket.
I'm not using a no-rinse, B-Brite.
You would think after having gone through the sick newborn for real I'd be better at waiting!
Thanks for the info guys.
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