Permeation study
PS was fully hydrated before mounted
between donor and receptor compartments of side-byside
diffusion cells whose temperature was controlled
at 32±1°C. CT extract was filled in the donor
compartment, while deionized water being the
receptor. Sample from the receptor solutions was
taken for quantification of the total phenolic contents
permeated. After sampling the receptor solution,
deionized water of an equal amount taken was refilled.