How Does Temperature Affect Yeast

This experiment tests how temperature of water added to yeast in bread dough affects the rising of the bread. The research done for this experiment mainly focuses on how large the range of temperatures should be, and when yeast dies. Research was also collected on exactly how yeast makes bread rise, and what other ingredients allow the yeast to do that.

Half the research collected was on why bread rises and what variables should be controlled. In “Kitchen Science”, the writer explained that when yeast is given the proper environment, it will bubble and release carbon dioxide, which is what makes the bread rise. “Bread Making ABCs” makes clear what that proper environment should be exactly. The author writes that because yeast is a living

After researching multiple recipes, quite a range of temperatures has been collected. In “Rising to the Challenge”, a baker claims that the ideal temperature for yeast leavening is between 100 and 115 degrees Fahrenheit. And at 120 degrees, yeast will begin to die, which is different than ”Bread Making ABC's”, this recipe claims the best temperature is between 95 and 115 degrees, which is a small bit lower than the first range, but still keeps the maximum temperature at 155 degrees. Another recipe in “Homemade Bread” suggests that yeast will ferment at any temperature above 80 degrees Fahrenheit, but did not give any information as to when yeast starts to die. In “Working With Yeast”, the writer claims that the best temperature is between 105 and 110 degrees. This is the smallest temperature that has been researched so far, and is easily one of the most reliable, because the average is so small. The last range collected is from “Yeast Breads Rising to the Occasion” is the largest so far, which is from 50 degrees to 120 degrees Fahrenheit. The minimum temperature is much below the rest of the averages collected, but the maximum temperature is correspondent with the rest of the averages, which is 120 degrees maximum. There is an obvious difference between these temperatures, but they all have