Polyphenols in countercurrent chromatography. 750-757 Polyphenols in countercurrent chromatography.
Countercurrent chromatography uses a biphasic liquid system to separate the components of a mixture.
A centrifugal field allows to use a liquid stationary phase in an open tube. The phase density difference and the centrifugal field are the only parameters allowing the equilibrium between the two liquid phases. The role of the phases can be switched during a run. The mobile phase becomes stationary and vice versa . Then no injected material can be left in the machine.