Abstract: Based on 5,10,15,20-(4′-pyridyl)porphyrin, a series of water soluble metalloporphyrins were synthesized. An LKB-2277 Thermal Activity Monitor was used to monitor the cell metabolic activity in vitro to produce thermogenesis curves. The growth rate constants k, maximum heat production rates P_max and peak time of growth thermogenic curves t of E. coli in different metalloporphyrins at different mass concentrations were deduced from these thermogenesis curves. Metalloporphyrins 1a, 1b and 2a-2c showed an inhibiting action on the growth metabolism of E. coli, with 2c as the best one.

Key words: Metalloporphyrins, Synthesis, Structure characterization, E. coli, Inhibiting action