Abstract
The anti-melanogenic principle of peony (Paeonia officinalis subsp. officinalis) seeds was elucidated via activity-guided isolation. Resveratroloside (trans-resveratrol-4′-O-beta-d-glucopyranoside) was found to be the main metabolite of P. officinalis subsp. officinalis seeds and its tyrosinase inhibiting activity was confirmed via an enzymatic assay. Furthermore, the in vitro activity and the therapeutic window were studied employing the murine melanoma cell line B16F10. The results from the conducted stability assay and the high content of resveratroloside in the seeds (i.e. 10.4% dw) motivated us to push the extract forward to an in vivo tolerance assay. A clinical study with forty Caucasian participants proofed a good skin-tolerance with high moisture effect and reduction of pores.
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