Papain is an enzyme found in the white fluid (latex) that occurs in raw papaya fruit. It is a protease, meaning it breaks down proteins. Papain contains substances that might help fight infection ...

Papaya (Carica papaya) is a tropical tree. Its ripe fruit is considered safe, but unripe papaya fruit contains papain and can damage the esophagus. Unripe papaya contains a chemical called papain.

The present communication describes the results of an investigation into the products formed when papain acts on wool keratin. This reaction has been described previously 1; but little is known ...