Bioelectret state in aromatic amino acids: A Thermally Stimulated Depolarization Current study of phenylalanine, tyrosine and tryptophan

Of the 20 common amino acids, only phenylalanine (Phe), tyrosine(Tyr) and tryptophan(Trp) have aromatic chromophores These aromatic amino acids having low energy conformers, have been the subject of most laser spectroscopic and detailed theoretical studies.These aromatic amino acids have been the subject of bioelectret state studies by the authors using, for the first time, the Thermally Stimulated Depolarization Current (TSDC) a well-known technique to study the nature of electrets . TSDC has been successfully used in the studies of dipolar relaxations in a side chain, relaxation in structurally related biomaterials and other materials and investigations show systematic in TSDC in terms of the molecular origin of broad relaxations.