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Author Topic: DAP, Fermaid O, Go-Ferm ?  (Read 1147 times)

Offline Joe_Beer

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DAP, Fermaid O, Go-Ferm ?
« on: March 19, 2022, 06:14:30 am »
I've been using LD Carlson DAP as a yeast nutrient for a couple years. Of the various homebrew youtube channels I find, it seems people use Fermaid ("O" rather than the older version, "K") more often than just plain DAP. Anyone ever notice a difference in results between them? Is Go-Ferm used mostly for starters rather than Fermaid?

Offline Bob357

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #1 on: March 19, 2022, 06:57:59 am »
DAP is used primarily in mead and wine (including cider) making. Fermaid-K and Fermaid-O are much better choices for grain-based brews. While DAP is a great Nitrogen source, beer specific products contain other nutrients that can benefit grain-based fermentations.
 
Go-Ferm is a rehydration nutrient. For yeast starters, Fermeid-k or Fermaid-O would be the appropriate nutrients.
« Last Edit: March 19, 2022, 07:05:33 am by Bob357 »
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Offline BrewBama

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #2 on: March 19, 2022, 07:05:49 am »
+ 1. Fermaid O is the Organic version of Fermaid K.

Go-Ferm is used to rehydrate dry yeast.

narvin

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #3 on: March 19, 2022, 08:24:08 am »
Fermaid O is also geared towards wine since it doesn't contain any other nutrients, no?  https://www.whitelabs.com/enzymes-nutrients-detail?id=2&type=ENZYMENUTRIENT&page=2

Servomyces or plain old Wyeast nutrient works well for me.

Offline kramerog

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #4 on: March 19, 2022, 08:41:11 am »
DAP (diammonium phosphate) provides nitrogen and phosphate which are nutrients that wort has plenty of already. The only nutrient that wort tends to be low in especially for big beers is zinc. I believe Fermaid provides zinc. You can put a tbsp of spent yeast in 10 gal of wort in the boil to provide the zinc - yes I am old school.

Offline denny

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #5 on: March 19, 2022, 08:43:44 am »
There have been studies that suggest that DAP can be carcinogenic.
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narvin

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #6 on: March 19, 2022, 08:50:46 am »
DAP (diammonium phosphate) provides nitrogen and phosphate which are nutrients that wort has plenty of already. The only nutrient that wort tends to be low in especially for big beers is zinc. I believe Fermaid provides zinc. You can put a tbsp of spent yeast in 10 gal of wort in the boil to provide the zinc - yes I am old school.

I'm not disputing that fermaid provides natural zinc, but I believe servomyces is enriched with more zinc specifically for beer yeast.  Although, it would be interesting to compare the actual amounts if that's available anywhere.

Offline Joe_Beer

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #7 on: March 23, 2022, 04:51:28 pm »
Thanks all. I think I'll be switching to Fermaid-K. This will work ok for starters too?

Offline hopfenundmalz

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #8 on: March 23, 2022, 06:16:49 pm »
There have been studies that suggest that DAP can be carcinogenic.
Wouldnt the yeast consume it and transform it into something else?

The dose makes the poison, this says not to worry.

https://www.winespectator.com/articles/is-diammonium-phosphate-which-is-found-in-wine-bad-for-our-health-48530

Alcohol is a know carcinogen too.
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Offline denny

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Re: DAP, Fermaid O, Go-Ferm ?
« Reply #9 on: March 24, 2022, 08:48:47 am »
There have been studies that suggest that DAP can be carcinogenic.
Wouldnt the yeast consume it and transform it into something else?

The dose makes the poison, this says not to worry.

https://www.winespectator.com/articles/is-diammonium-phosphate-which-is-found-in-wine-bad-for-our-health-48530

Alcohol is a know carcinogen too.

Which is why I didn't say you shouldn't use it.  I was merely citing ressearch that people might want to be aware of.
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