why is sourdough bread ‘sour’

8 Mar

hey everyone 🙂

does anyone know why sourdough bread is sour? or what makes it different to regular bread?

In addition to yeast (Saccharomyces), sourdough bread also uses Lactobacillus plantarum which results in a pleasantly sour taste. The lactic acid (formed by Lactobacillus plantarum) also lower the pH (in other word- makes it more acidic), which inhibits the amylase enzyme in the flour from breaking down starch into the sweeter-tasting maltose. That’s why it is less sweet 🙂


BROWN, A. 2004. Understanding Food Principles and Preparation, Thomson Wadsworth.


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