Author Topic: Question about nutrients in starter  (Read 1801 times)

Offline hopfenundmalz

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Re: Question about nutrients in starter
« Reply #30 on: December 10, 2018, 03:10:41 PM »
I saw this presentation, and started using zinc.

https://www.google.com/url?sa=t&source=web&rct=j&url=http://www.ahaconference.org/wp-content/uploads/presentations/2009/Tobias-Fischborn-NHC2009-Yeast%2520nutrition.pdf&ved=2ahUKEwi77tT5t4TfAhUCQKwKHQaEDlQQFjAAegQIAxAB&usg=AOvVaw1Nl4vWTLbfyyELZXHEBMbI&cshid=1543867129081

Finally had time to read this.   I have always used Wyeast Yeast Nutrient in my beers and this confirms that what I am doing is a good thing since the nutrient has zinc in it.  Always have short lag times evne if I unde pitch due to older, but still in date yeast.  As I said before, although I brew a lot, I don't brew enough to re-pitch.

Thanks for sharing, Jeff, and thanks Rob for citing some good reference sources.
At the same NHC Dr. MB Raines have a talk on yeast, and zinc's importance was also covered. That was positive reinforcement.

Looked for that, couldn't find it.
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Offline jeffy

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Re: Question about nutrients in starter
« Reply #31 on: December 14, 2018, 07:50:27 PM »
I just ordered yeast nutrient, packaged by LD Carlson.  It says, "contains food grade urea and diammonium phosphate."  It doesn't say anything about zinc.  Did I just buy the wrong stuff?
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Offline denny

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Re: Question about nutrients in starter
« Reply #32 on: December 14, 2018, 08:03:08 PM »
I just ordered yeast nutrient, packaged by LD Carlson.  It says, "contains food grade urea and diammonium phosphate."  It doesn't say anything about zinc.  Did I just buy the wrong stuff?

I think so.  AFAIK, you don't want urea in there.  All I can really recall, though, is a lengthy discussion on HBD 20 years ago.
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Offline Robert

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Re: Question about nutrients in starter
« Reply #33 on: December 14, 2018, 08:11:03 PM »
AFAIK Denny  is right, that's one of the products intended for wine, mead and cider that need the nitrogen compounds.  Beer wort has adequate nitrogen.   Another clue is, the LD Carlson product tells you how much to add per gallon of MUST.  You want a complete beer yeast nutrient like Wyeast's or BSG's Fermax (not to be confused with Lallemand Fermaid, which is nitrogen only again,) or Servomyces which just provids zinc (and lightens your wallet.)

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Offline jeffy

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Re: Question about nutrients in starter
« Reply #34 on: December 14, 2018, 08:21:59 PM »
Dang it.  I see on the label it mentions "must" rather than wort.  Anybody need any of this?
Jeff Gladish, Tampa (989.3, 175.1 Apparent Rennarian)
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Offline a10t2

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Re: Question about nutrients in starter
« Reply #35 on: December 14, 2018, 09:18:44 PM »
Dang it.  I see on the label it mentions "must" rather than wort.  Anybody need any of this?

How much? I'll take it off your hands if it's worth shipping. Never used anything else.
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Offline jeffy

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Re: Question about nutrients in starter
« Reply #36 on: December 14, 2018, 09:41:25 PM »
Dang it.  I see on the label it mentions "must" rather than wort.  Anybody need any of this?

How much? I'll take it off your hands if it's worth shipping. Never used anything else.
I bought a pound from Austin Homebrew Supply at $6.05 plus a little shipping, but the shipping was covered by some other items.
Do you have good results with it?  I have actually never used yeast nutrient in beer, but then again, my finishing gravities are not always as low as I want.

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Offline a10t2

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Re: Question about nutrients in starter
« Reply #37 on: December 15, 2018, 03:26:19 AM »
I bought a pound from Austin Homebrew Supply at $6.05 plus a little shipping, but the shipping was covered by some other items.
Do you have good results with it?  I have actually never used yeast nutrient in beer, but then again, my finishing gravities are not always as low as I want.

I *think* I have good results, but I don't have much basis for comparison. I didn't use it as a homebrewer until I started my second brewing job. Both those breweries used the cheap stuff from BSG and I always chalked it up as cheap insurance if nothing else. Definitely no issues with high FG - my issues are with batches where I'm trying to get less than ~80% ADF.

I use 0.2 g/gal for normal worts, 0.3 g/gal for high gravity worts, which is in the range from the 5 lb packaging. I do think the dosage rates from the homebrewer packaging are targeted at winemaking. So it would take me a long time to go through a pound. Worst case if you're willing to hold on to it until I'm down there in April I'd have an excuse to buy you a couple pints.
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