Can an egg white be turned into a yolk?
Attention! All experiments are performed by professionals. Do not attempt.
Egg white consists of water and proteins, which are large molecules composed of smaller ones called amino acids. “Aromatic” amino acids are a subset of these with special rings of atoms in their structure. They react with nitric acid to form yellow compounds. This process is called a xanthoproteic reaction.
A safer version of this experiment is included in the “Chemistry of eggs” set from the MEL Chemistry subscription!