Peptide (IMAGE) Kazan Federal University Caption Time dependencies of the glycylglycine (a, c) and diglycylgly-cine (b, d) concentrations (data obtained by HPLC) and their yields for the glycine-sodium trimetaphosphate-imidazole (1:1:1) system at 75 °C with different pH values (a, b) and at different temperatures with pH 9.5 (c, d); initial concentrations c0 = 0.1 M, reactor residence time τr = 16 min, total volume Vt = 25 ml, reactor volume Vr = 16 ml Credit Kazan Federal University Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.