Abstract
Betalamic acid is a chiral aldehyde prepared by hydrolysis of betalains or isolated from bacteria transformed to express L-DOPA dioxygenase. Betalains are imines or iminium salts and, therefore, the coupling between betalamic acid and amines or amino acids results in natural or pseudo-natural betalains that can be applied as antioxidants, biological markers, catalysts in the formation of …