Cell count and Ester Production - Home Brew Forums

Register Now!
Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Cell count and Ester Production

Reply
 
Thread Tools
Old 03-15-2011, 07:40 AM   #1
shauntraxler
Recipes 
 
Jan 2011
Kissimmee, Fl
Posts: 278
Liked 7 Times on 7 Posts



Geez I sure hope someone is awake...lol

I am getting ready to pitch my Wyeast Activator pack of Weizen 3068 into my Weizen-bock. The problem is, using Mr. Malty's calculator, I only need barely over 1 billion cells to complete fermentation as I am brewing 2.25 gallons. The smack pack comes with 1 billion cells. I read that if the yeast have no need to multiply, they never produce esters and therefore, I won't get my subtle banana and clove tones which we so love in our hefes and wits.

So my question is, can I just pour 1/2 to 3/4 of the smack pack into the wort and toss the rest? Will this produce any ill side effects? I don't see why it would, but I am proven wrong on a daily basis.

Pleaaaaaaaaase someone be awake.. lol..

 
Reply With Quote
Old 03-15-2011, 11:30 AM   #2
devilishprune
Recipes 
 
Mar 2010
Posts: 1,241
Liked 9 Times on 9 Posts


I don't know where you're getting your numbers from, but if I remember correctly you need about 1 million cells per mL per degree plato. That means you need 6 billion cells for 1 LITER. An activator pack is supposed to have 100 billion cells, but in practice it actually has less than that. You are not going to be overpitching by any means, so definitely add the whole pack.

Next time, though, I would make a properly sized starter.

 
Reply With Quote
Old 03-15-2011, 01:06 PM   #3
theredben
Recipes 
 
Dec 2010
Langley, BC
Posts: 934
Liked 24 Times on 23 Posts


I think you are confused on the 1 billion number, but you understood the part about pitching less than one pack properly. If you want a little bit extra of esters it would not be a bad idea to slightly underpitch. Maybe 3/4 of an Activator pack, or a whole Propagator pack

 
Reply With Quote
Old 03-15-2011, 08:28 PM   #4
shauntraxler
Recipes 
 
Jan 2011
Kissimmee, Fl
Posts: 278
Liked 7 Times on 7 Posts


I apologize... I meant to say 100 billion.. My bad guys lol.. It was late.

Theredben had in mind what I was thinking, I just didn't know if there would be consequences to only pitching 3/4 of the activator pack with 100 billion cells.

 
Reply With Quote
Old 03-15-2011, 11:27 PM   #5
theredben
Recipes 
 
Dec 2010
Langley, BC
Posts: 934
Liked 24 Times on 23 Posts


Only consequences would be maybe a few more esters. Give it a shot.

 
Reply With Quote
Old 03-16-2011, 04:47 PM   #6
shauntraxler
Recipes 
 
Jan 2011
Kissimmee, Fl
Posts: 278
Liked 7 Times on 7 Posts


Well, I pitched the night I posted this... and I just went ahead and pitched the entire activator with 100billion cells. I hope to get some good esters though... I'm fermenting a bit higher, 66-68 in hopes of more banana and less clove, but we'll see.

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Starter from slant or colony - cell count question Maarten Fermentation & Yeast 3 10-08-2010 05:20 AM
will 2 vials of yeast in a 1 L starter grow my cell count? bgough Fermentation & Yeast 2 12-31-2009 01:06 PM
Ester Production, Acetyl CoA, and Yeast Growth Pisty_Pete Fermentation & Yeast 9 11-23-2009 11:21 PM
How do you know the cell count of your washed yeast? petep1980 Fermentation & Yeast 8 11-22-2009 03:28 PM
I have Small Flask Syndrome - need to boost my cell count. shortyjacobs Fermentation & Yeast 7 09-23-2009 04:01 AM


Forum Jump