j+santiago

Joseph Santiago

Problem: How yeast reacts to temperature and volume during its fermentation process. Which conditions can it survive better - heat or cold?

Materials:
 * 1) Yeast
 * 2) Sugar
 * 3) Plastic bottles
 * 4) Balloons
 * 5) Soda
 * 6) Vinegar
 * 7) Baking powder
 * 8) Salt

Procedure:
 * Prepare 4 samples
 * Wait 4 days to see complete results
 * Sample 1: warm water, yeast and salt
 * Sample 2: water, yeast, soda, and baking powder
 * Sample 3: vinegar, yeast and sugar
 * Sample 4: warm water, yeast and sugar

Hypothesis:Yeast will survive better in heat and will release more gas.

Data: I gathered all my materials to start my project. It's a very inexpensive project that's easy and fun to do. I got some ideas from the internet but I changed the project so that I could learn something new. I will prepare 4 different yeast samples and observe them for 4 days to see what changes occur. A balloon will be placed on each bottle to see the release of gas from each sample during the fermentation of the yeast.

Conclusion: I enjoyed doing this project. It was fun and full of surprises. I was a little disapointed in the begining because I didn't see the results that I thought I would. I was able to notice significant changes as the days went by.

TOPIC Yeast Experiment

Journal # 1 Date: May 1, 2011 - Prepared and labeled all yeast samples. Not much happened. Journal # 2 Date: May 2, 2011 - Sample #1 - no changes, Sample # 2 - some changes, Sample # 3 - a little change and Sample # 4 - the best sample and most changes Journal # 3 Date: May 3, 2011 - This was the best day for 3 of my sample bottles. Sample # 1 remained the same, Sample # 2 improved more, Sample # 3 was a little different and Sample # 4 is the best one. Journal # 4 Date: May 4, 2011 - Today is the last day to observe my project. When I went to the kitchen I received a big surprise! Sample # 4 was huge the others were similar to the day before.