Lab Report Yeast Fermentation

For this experiment, we combined yeast, water, and other ingredients to see the outcome of fermentation. The purpose of this experiment was to see what would happen when yeast was combined with other materials. The learning goal was to show how yeast reacts with other materials and how it shows alcoholic fermentation. In the experiment, we were able to look under a microscope and see how the yeast was woken up when it was exposed to water.

In the experiment when we combined yeast with other materials such as water, grass, sugar, and cornmeal, it reacted creating CO2. When this reaction happened it caused the Ziploc bags to blow up and fill with many air bubbles. In our group, bag A which contained yeast and water rose the most. Its final

Some of which could have been prevented, while others not so much. One of the main errors in our group that seemed to occur was that the warm water that was being passed around, became colder as it reached the last of the bags. This could have greatly impacted our experiment simply because the temperature of the water could play a very big role in the fermentation process taking place. Another error that was found to take place was human error. The way that the experiment was conducted was that we all measured our own individual bags. In this, someone could have simply read the measurements wrong, causing an incorrect result. From this, we have learned to try and be as accurate as possible and make sure to be taking the correct measurements. For a further experiment, I would recommend just a few changes to try and prevent any human error. Next time we could assign one person to each table to be accurately measuring the height of the bags to make the process more efficient. In our group, the possibility of human error was pretty high so assigning one person could make the experiment more precise. Overall, the lab seemed to be a fairly good representation of the alcoholic fermentation process that occurs when yeast, sugar, and water are