Factors Affecting of sugar concentration on rate of fermentation

To fine whether different type of sugar solution effect the rate of fermentation. How does it effect the rate and which type of concentration works best.

Factors affecting the rate of fermentation

The factor I have chosen is to vary is the concentration of sugar. The concentration will be 200%, 150%, 100% and 50%.

* Hot bath is dangerous and you might boil you hand therefore care must be taken.

* Yeast culture is not every good to your eye so care must be taken. Therefore safety glass might need to be worn.

* Any equipment that is broken is dangerous for example broken glasses because it could cut you.

What I have predicted the out come of the result will be is that the amount of carbon dioxide given off will increase as the concentration of sugar increase. The rate of fermentation will increase proportionally as concentration increase but it will eventually stop.

* Test tubes - for containing some of the yeast culture for the experiment.

* Durham tubes - for finding the amount of carbon dioxide give off.

* Pipette - for putting the yeast culture into test tubes and Durham tubes.

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The carbon dioxide might have dissolve in the solution causing the amount of carbon dioxide to be lesser. Each experiment of different concentration will repeated three times and find the average results. The tube was taken out of the water bath to measure therefore the temperature will not be constant. Though out the experiment the out come of the results have been well enough and I think that the way I did the experiment is the best possible that I could do. These enzymes are used for breaking down the sugar molecules.

Evaluation

From the experiment I have done I did the best I could to produce the out come of the results to be perfect enough of the conclusion. This result for the yeast cells to loose water to the solution, which makes the yeast less efficient. The surface tension of Durham tube might cause some change because as the meniscus descend it might stick to the side of the tube and when the pressure builds up and trying to drag it down the meniscus will not come down steadily. The rate of reaction table could be seen in the obtaining evidence along with the other results. The Durham tubes used has on the end a dome shape, which is an uncontrolled variable.

Approximate Word count = 1467
Approximate Pages = 6 (250 words per page double spaced)

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