Here is the graph of how much carbon dioxide was leaving the reactor flask
each minute. The graph has been corrected to incorporate the fact that the
glucose feed solution ran out at 900 minutes, and the Gatorade feed solution
ran out at 600 minutes. The glucose is the solid line with squares, and the
Gatorade is the dotted line with circles.
The graph itself is not very indicative of how much carbon dioxide was totally produced. The total amount of carbon dioxide produced
is important, since it directly correlates to how much ethanol was produced.
The great the amount of carbon dioxide generated, the greater the amount of
ethanol produced.
To determine the total amount of ethanol produced, one must add up the area
under each curve. Doing so, one will find that the area under the glucose
curve sums to greater than 20,000 milliliters of carbon dioxide generated,
while the area under the Gatorade curve sums to just less than 17,000
milliliters of carbon dioxide produced. Therefore, one can deduce
that glucose produces more ethanol than an equivalent amount of Gatorade brand
drink powder for this particular fermentation.
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Written by Kurt M. Fritzsche (fritzk@rpi.edu)
, 7-December-1995.
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Last update: 7 December 1995