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Posted: Fri Nov 09, 2007 11:51 am
by jordanc740
I am working on a science fair project about yeast fermentation in different liquids. I have done plenty of research and am working on my Experiment Plan. I was just wondering if you knew of any good sites to use. Also, what kind of yeast should i use for my experiment? Lastly, i am measuring the most active fermentation by the CO2 produced which i will measure with water displacement. Is there a formula to convert the water displacement to an actual air measurement?

-Please Respond-[/code]

Posted: Fri Nov 09, 2007 12:01 pm
by ericw740
I found a good website it is: ... e00195.htm try it out :D

Posted: Fri Nov 09, 2007 12:19 pm
by scotta740
I found a pretty good website for you to see. Check it out: ... ivity.html :P

Posted: Fri Nov 09, 2007 12:19 pm
by ericw740

Posted: Fri Nov 09, 2007 12:24 pm
by tylers740

Posted: Fri Nov 09, 2007 12:36 pm
by Louise
tylers740 wrote:
delete website
Is a OK kit (and cheep)(!!!!)

It is most useful if you can provide information for free. A website that charges $64 for a kit is not cheap. If you look at the other links provided, you see that there are many sets of instructions that are free.


Posted: Fri Nov 09, 2007 6:29 pm
by Willz

First of all, what do you mean by air measurement? I think it would be fine if you measured the amount of CO2 through the water displacement method.

To do this, you can place the yeast in a large container with the liquid you are testing the fermentation in; have a graduated cylinder or flask and fill it with water, and stopper it. Invert it into the water and take out the stopper; make sure you keep the cylinder/flask directly over the yeast that is fermenting, so as to collect the CO2 being produced. This method is based off of a lab I did in Chemistry that dealt with the collection of butane gas. More information can be found here:

Hope this helps!


Posted: Sat Nov 10, 2007 7:36 am
by ericw740
i found a few good websites... check these ones out: ... n_exp.html
( yes i know they are from michigan but who gives! go bucks) :D :D :D ... arter1.htm