Schiff base
The Maillard Reaction occurs between the carbonyl group of a sugar and the amino group on a protein. These react to form a N-substituted glycosylamine, also known as a Schiff base. The Schiff Base then undergoes an isomerization by an Amadori rearrangement to form a ketosamine, or an Amadori rearrangement. The Amadori product can then undergo many further reactions to form various AGE products, which can also be further modified into different products.