The permeation profiles of CT extract, i.e. rates or
fluxes, lag times and correlation coefficients were
listed as followed. Total phenolic compounds from
CT extract, permeated the PS at an average rate of
36.4 ± 1.5 μgGAE/cm2/h (n = 4) with no lag time,
indicate a immediate permeation of phenolic
compounds into the aqueous environment of the
receptor medium. The correlation coefficient was
equal to 0.999, suggesting an increase in cumulative
amount of phenolic compounds permeated through PS
in a linear manner to time. PS using as a barrier
membrane in the in vitro permeation study was cross
sectioned to observe under stereomicroscopy (figure 3
and 4). Both figures show full skin of PS, thickness
approximately 500 μm. Figure 3 shows bright blue
fluorescence of PS without CT extract exposure.