When you apply hydrogen peroxide to a blood stain, an enzyme in blood called catalase triggers an oxidizing reaction that breaks down many of the chemical compounds that make blood stains so stubborn.

This is the metadata section. Skip to content viewer section. 1. The amount of catalase in the dry seeds of rice is much less than that of wheat, barley, oats, and rye, being in fact about one-tenth ...

Liver cells produce the enzyme catalase to speed up the breakdown of hydrogen peroxide. The chemicals that enzymes act on are called substrates and the substances produced are called products.