Carbon dioxide.
The gas released by yeast, CO2, creates bubbles, as the bubbles expand in the dough, the bread rises. As the bread bakes, the bubbles set and give the bread its light, airiness.
The yeast cells in bread dough ferment sugars and produce gas (carbon dioxide). This makes the dough rise.
Yes. as temperature rises pressure rises and density rises.
yeast
Yeast is made up of microorganisms (fungi) that feed on starches and sugar, producing gas that makes dough rise. Yeast can digest sugar quicker than starches, so rises faster when sugar is included.
Yeast produces CO2 gas and sometimes ethenol when it metabolizes sugar.
carbon dioxide
you can not measure gas of yeast
When bread rises, it is a sign that yeast, a type of fungus, is producing carbon dioxide gas through fermentation. The carbon dioxide gas gets trapped within the dough, causing it to rise and create a light, airy texture in the bread.
Yeast itself does not turn into gas. When Yeast "eats" sugars to live and to reproduce, it produces waste products like every other living organism. The primary wastes created are ethyl alcohol and carbon dioxide. Under the normal conditions in which we live, carbon dioxide, or CO2, is a gas, and that is the gas that is released when yeast metabolizes sugars.
Yes, actually it does.
When yeast dough rises, the process is called rising or leavening. The first phase of rising, when yeast is dissolved in warm water and sugar until it foams, is called proofing.