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-   -   Yeast Nutrients in cider: Do, Don't, Maybe, How Much? (http://www.homebrewtalk.com/f32/yeast-nutrients-cider-do-dont-maybe-how-much-355281/)

Pratzie 09-19-2012 01:50 AM

Yeast Nutrients in cider: Do, Don't, Maybe, How Much?
 
So im on my first batch of hard cider. Using Nottingham and rehydrated as advised on the pack. This thing took off like Usain Bolt in London. Within 2 hours it was starting to lace around the top of the carboy and within 6 hours the airlock was bubbling away so I think im on the right path.

But i've read several places that apples may not have the necessary nutrients needed for yeast to thrive in cider must as compared to water in the wort of home brew which normally has natural minerals in it. Some of the recipes i've seen don't show any nutrient additives but some do. Im just looking for opinions on whether you should or should not add them, why and if so, how much and how often. Also any thoughts on whether or not nutrient would help it ferement to a lower final gravity as well as impacts on the speed of reaching a final gravity.

Any and all opinions appreciated!:rockin:

snortwheeze 09-19-2012 02:56 AM

I added nutrient to my 5 gallon batch. More to ward off "rhino farts" then anything else. I added 1tsp per gallon. A couple of raisins will do the same thing, at least that's what I'm told.....

KBentley57 09-19-2012 03:02 AM

According to a study: (http://www.scielo.br/scielo.php?pid=S1516-89132011000300017&script=sci_arttext)

Applejuice from three different varities were tested for their nitrogen content, and its effect on fermentation. They found that no nitrogen source is required. Here is the conclusion of their paper, but I would encourage you to read the whole thing. It's an interesting piece of work.

Quote:

CONCLUSIONS

Brazilian apple must showed average nitrogen concentration above 100 mg/L. At this concentration the alcoholic fermentation occurs without any interruptions. The nitrogen content in apple juice affects directly the yeast growth and fermentation kinetics. However, although in must with low nitrogen content, the fermentation was slower but it occurred until complete exhaustion of the fermentable sugars. The Brazilian apple must not be supplemented with nitrogen for alcoholic fermentation.
I understand you asked for nutrient, and not specifically a pure nitrogen supplement such as DAP, but I would assume the same thing goes. They found that yeast fermented to completion without any additional suppliments. That being said, I would add a Tablespoon (for 6 gallon) of yeast energizer to the batch just in case.

Clayton 09-19-2012 03:09 AM

alot of brewers use organic apples becase they have less FAN and you can make a sweeter cider with less fuss. if you add DAP or nutrient you will get very compleate fermention =DRY
http://www.homebrewtalk.com/f32/results-juice-yeast-sugar-experiments-83060/ read this all the way.

LeBreton 09-19-2012 11:54 AM

Quote:

Originally Posted by KBentley57 (Post 4424862)
According to a study: (http://www.scielo.br/scielo.php?pid=S1516-89132011000300017&script=sci_arttext)

Applejuice from three different varities were tested for their nitrogen content, and its effect on fermentation. They found that no nitrogen source is required. Here is the conclusion of their paper, but I would encourage you to read the whole thing. It's an interesting piece of work.

Interesting link! Thanks for sharing.

Pratzie 09-19-2012 03:05 PM

Quote:

Originally Posted by KBentley57 (Post 4424862)
According to a study: (http://www.scielo.br/scielo.php?pid=S1516-89132011000300017&script=sci_arttext)

Applejuice from three different varities were tested for their nitrogen content, and its effect on fermentation. They found that no nitrogen source is required. Here is the conclusion of their paper, but I would encourage you to read the whole thing. It's an interesting piece of work.



I understand you asked for nutrient, and not specifically a pure nitrogen supplement such as DAP, but I would assume the same thing goes. They found that yeast fermented to completion without any additional suppliments. That being said, I would add a Tablespoon (for 6 gallon) of yeast energizer to the batch just in case.

Very good info here, thanks for sharing!

JtotheA 09-19-2012 04:19 PM

I have yet to add any nutrients to any of mine. I have had great success by keeping my recipes simple and not adding sugar or chemicals (maybe some some juice concentrate) and being able to control the ale yeasts and keep things on the sweeter side without backsweetening. Well that's my take on not adding any nutrients, but everyone does things different and likes things different. What Clayton said is becoming more and more apparent the more I learn.

johnny5000 09-19-2012 05:42 PM

Are there any disadvantages to adding yeast nutrients? Other than personal preference of making a product with as few additives as possible?

LeBreton 09-19-2012 10:44 PM

Only disadvantage is if you add too much too late. If there is enough nutrient left in the cider at the end you can taste it.

gratus fermentatio 09-23-2012 01:49 PM

I use yeast nutrient, yeast energizer & DAP (diammonium phosphate) in every cider, graf, and wine I make. The reason is simple:
For a few cents, I can make certain the yeast have everything they need for a healthy fermentation; to me, it's worth it.
Regards, GF.


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