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. 2020 Jun 3;9(6):486. doi: 10.3390/antiox9060486

Figure 3.

Figure 3

Relative position (depth) within the stratum corneum (SC, x/L) of mean anthocyanin amounts (μg/cm−2) ((A): elderberry; (B): red radish) as determined by HPLC in vivo (Inline graphic), and PLS-R of FTIR spectra in vivo (Inline graphic) and ex vivo (Inline graphic). Means are shown as the average of triplicate samples from six participants. The lines are the best fit for Equation (A1) used to determine permeability and diffusivity of the formulas.