What causes bread dough to rise?

1 Answer
Meave60
May 20, 2017

The carbon dioxide gas produced by yeast during alcoholic fermentation causes bread dough to rise.

Explanation:

Yeast undergo alcoholic fermentation, during which ATP, carbon dioxide gas, and ethanol are produced.

In the diagram below, glycolysis is the first step and produces ATP and pyruvic acid , or pyruvate , which is converted to acetaldehyde by the enzyme pyruvate decarboxylase, which produces #"CO"_2# . The acetaldehyde is converted to ethanol by the enzyme alcohol dehydrogenase.

http://www.themadscienceblog.com/2013/05/biology-and-beer.html

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