The single hydrogen atom (H) reacted with a molecule of oxygen (O 2), producing a molecule of hydroxyl radical (OH) and an atom of oxygen (O). Both OH and O are also highly reactive. The new OH ...

Soon after, Kaelin and Ratcliffe discovered that when oxygen is present, a chemical flag called a hydroxyl group gets attached to one or both of two specific prolyl residues (one of the 20 ...

These compounds work by scavenging hydroxyl radicals—a type of reactive oxygen molecules—or perturbing the interface. Such molecules are widely available in foods that have antioxidant ...