Root Beer World - root beer history, brands, recipes, news

Root Beer World - root beer history, brands, recipes, news
A World of Root Beer Resources

 

In Association with Amazon.com



Nickname

Password


Don't have an account yet? You can create one. As a registered user you have some advantages like theme manager, comments configuration and post comments with your name.

  
Root Beer World: Forums

 Forum FAQForum FAQ   SearchSearch   UsergroupsUsergroups   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

First time brewing, question about sugar
 
 
Post new topic   Reply to topic    Root Beer World Forum Index -> Home Brewing
View previous topic :: View next topic  
Author Message
Xandrew245x
Root Beer Fan
Root Beer Fan


Joined: Oct 07, 2014
Posts: 1
Location: Pa

PostPosted: Tue Oct 07, 2014 8:54 am    Post subject: First time brewing, question about sugar Reply with quote

Hello everyone, newbie here to both brewing and the forum. I have been on a diet that consists of very low sugar intake and llow carbs. One thing I really rreally miss is root beer, but of course I can not consume regular soda because of diet. I want to get into brewing my own root beer from an old recipe I has found. The recipe calls for 2.5 quarts of water and 2 cups of sugar. So at that rate there will be approximately 1.5 grams of sugar per fluid ounce before fermentation. That's a tad high for me still. My question is, roughly how much of that sugar will be consumed in theffermentation process? Thanks!
  
Back to top
View user's profile Send private message
kguske
Site Admin
Site Admin


Joined: Jun 27, 2003
Posts: 349

PostPosted: Wed Oct 08, 2014 7:26 am    Post subject: Reply with quote

Welcome, Xandrew245!

Our resident brewmaster, aruzinsky, might be able to guide you on the sugar fermentation process. But you might want to consider using carbonated water / carbon injection instead. That might require changes to the recipe, but might taste more like what you're used to buying off the shelf.
_________________
Bottoms up!
Kevin Guske

So heres a tribute toast with root beer in hand to you and the many mugs of suds along your happy trails. --Charles Wysocki, artist and root beer fan, 1928-2002
  
Back to top
View user's profile Send private message
aruzinsky
Root Beer Connoisseur
Root Beer Connoisseur


Joined: Oct 13, 2004
Posts: 161
Location: IL, USA

PostPosted: Thu Oct 30, 2014 10:49 am    Post subject: Re: First time brewing, question about sugar Reply with quote

Xandrew245x wrote:
My question is, roughly how much of that sugar will be consumed in theffermentation process?


The reduction in the weight of sugar will be approximately proportional to the increase in alcohol or carbon dioxide according to the chemical reaction:

C6H12O6 + Zymase → 2 C2H5OH + 2 CO2

The molecular weights are as follows:


C6H12O6 - 180
C2H5OH - 46
CO2 - 44

The reduction in weight of sugar will be 180/(2*44) = 2.045 times the weight of carbon dioxide.

According to http://www.manualslib.com/manual/383616/Eutech-Instruments-Carbon-Dioxide-Gas.html?page=13 ,
the maximum carbon dioxide concentration of carbonated beverages is 880 ppm or 0.00088. The weight of one fluid ounce of solution is approximately 29.57 g., therefore the reduction in sugar will be, at most, 2.045*0.00088*29.57 = 0.53 g/oz.
  
Back to top
View user's profile Send private message Visit poster's website
aruzinsky






PostPosted: Sat Dec 13, 2014 7:52 pm    Post subject: Re: First time brewing, question about sugar Reply with quote

aruzinsky wrote:
Xandrew245x wrote:
My question is, roughly how much of that sugar will be consumed in theffermentation process?


The reduction in the weight of sugar will be approximately proportional to the increase in alcohol or carbon dioxide according to the chemical reaction:

C6H12O6 + Zymase → 2 C2H5OH + 2 CO2

The molecular weights are as follows:


C6H12O6 - 180
C2H5OH - 46
CO2 - 44

The reduction in weight of sugar will be 180/(2*44) = 2.045 times the weight of carbon dioxide.

According to http://www.manualslib.com/manual/383616/Eutech-Instruments-Carbon-Dioxide-Gas.html?page=13 ,
the maximum carbon dioxide concentration of carbonated beverages is 880 ppm or 0.00088. The weight of one fluid ounce of solution is approximately 29.57 g., therefore the reduction in sugar will be, at most, 2.045*0.00088*29.57 = 0.53 g/oz.


CORRECTION:

I made two mistakes.

1. "880 ppm" is wrong. I misread the reference.

2. 2.045*0.00088*29.57 = 0.053 g/oz (not 0.53)

From

http://chemistry.stackexchange.com/questions/9067/what-is-the-carbon-dioxide-content-of-a-soda-can-or-bottle ,

the carbon dioxide concentration of Coca Cola is 6197 ppm. At that concentration, fermentation would reduce sugar by

2.045*0.006197*29.57 = 0.3747 g/oz
  
Back to top
aruzinsky






PostPosted: Sun Jan 04, 2015 5:14 pm    Post subject: Re: First time brewing, question about sugar Reply with quote

aruzinsky wrote:
aruzinsky wrote:
Xandrew245x wrote:
My question is, roughly how much of that sugar will be consumed in theffermentation process?


The reduction in the weight of sugar will be approximately proportional to the increase in alcohol or carbon dioxide according to the chemical reaction:

C6H12O6 + Zymase → 2 C2H5OH + 2 CO2

The molecular weights are as follows:


C6H12O6 - 180
C2H5OH - 46
CO2 - 44

The reduction in weight of sugar will be 180/(2*44) = 2.045 times the weight of carbon dioxide.

According to http://www.manualslib.com/manual/383616/Eutech-Instruments-Carbon-Dioxide-Gas.html?page=13 ,
the maximum carbon dioxide concentration of carbonated beverages is 880 ppm or 0.00088. The weight of one fluid ounce of solution is approximately 29.57 g., therefore the reduction in sugar will be, at most, 2.045*0.00088*29.57 = 0.53 g/oz.


CORRECTION:

I made two mistakes.

1. "880 ppm" is wrong. I misread the reference.

2. 2.045*0.00088*29.57 = 0.053 g/oz (not 0.53)

From

http://chemistry.stackexchange.com/questions/9067/what-is-the-carbon-dioxide-content-of-a-soda-can-or-bottle ,

the carbon dioxide concentration of Coca Cola is 6197 ppm. At that concentration, fermentation would reduce sugar by

2.045*0.006197*29.57 = 0.3747 g/oz


Sorry, I made another mistake, C6H12O6 is glucose, not sucrose (common sugar). But, my last answer would have been correct, had you used glucose instead of sucrose.

According to http://en.wikipedia.org/wiki/Ethanol_fermentation ,

"Alcoholic fermentation converts one mole of sucrose into four moles of ethanol and four moles of carbon dioxide, producing two moles of ATP in the process."

The formula for sucrose is C12H22O11 and its molecular weight is 342. The molecular weight of carbon dioxide is 44. Thus, the mass ratio of sugar to carbon dioxide is 342/(4*44) = 1.943 and the reduction in sugar per ounce of soda is approximately 1.943*0.006197*29.57 = 0.356 g/oz.
  
Back to top
Display posts from previous:       
Post new topic   Reply to topic    Root Beer World Forum Index -> Home Brewing All times are GMT - 4 Hours
 
 Page 1 of 1

 

Jump to:   
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

Powered by phpBB © 2001-2008 phpBB Group
Forums ©
Page Generation: 0.10 Seconds