The kinetics of the main phase transition of aqueous dispersions of phospholipids induced by pressure jump and monitored by raman spectroscopy

摘要: The sensitivity of the melting transition temperature aqueous dispersions dipalmitoyl- and distearoylphosphatidylcholine to hydrostatic pressure is used allow measurement rates isothermal freezing lipids by rapidly changing pressure. degree order measured monitoring a ratio two points in Raman spectrum which changes sharply at temperature. Use this allows correlation between sample manner impossible only turbidity. Our longest relaxation times range upwards from few seconds for both compounds. are slowest when samples initially fully melted, frozen. These results imply that nucleation growing phase dominates kinetics melting.