How is potassium bromate used in wheat flour?

Potassium bromate is used in wheat flour as an oxidizing agent, often referred to as an "improver."12

When added in small amounts—typically a few parts per million—it enhances the baking quality of the flour, which allows for the production of larger and better-quality loaves of bread. It functions by modifying the properties of the flour to improve its performance during the baking process.21