stylistic:tone, linguistic:translation
Production

The aerobic oxidation of glucose in the presence of the enzyme glucose oxidase produces hydrogen peroxide. The conversion affords gluconolactone:

Superoxide dismutases (SOD)s are enzymes that promote the disproportionation of superoxide into oxygen and hydrogen peroxide.

Peroxisomes are organelles found in virtually all eukaryotic cells. They are involved in the catabolism of very long chain fatty acids, branched chain fatty acids, D -amino acids, polyamines, and biosynthesis of plasmalogens, ether phospholipids, which are found in mammalian brains and lungs. They produce hydrogen peroxide in s process catalyzed by flavin adenine dinucleotide (FAD):

Hydrogen peroxide arises by the degradation of adenosine monophosphate, which yields hypoxanthine. Hypoxanthine is then oxidatively catabolized first to xanthine and then to uric acid, and the reaction is catalyzed by the enzyme xanthine oxidase:

Hypoxanthine

Xanthine oxidase

Xanthine

Xanthine oxidase

Uric acid

The degradation of guanosine monophosphate yields xanthine as an intermediate product which is then converted in the same way to uric acid with the formation of hydrogen peroxide.