Stability and ultraviolet A photostability of silymarin polyphenols and its consequences for practical use in dermatology

Pavel Kosina,Alena Rysava,Jitka Vostalova,Barbora Papouskova,David Biedermann,Jitka Ulrichova,Alena Rajnochova Svobodova

Journal of Photochemistry and Photobiology A: Chemistry（2022）

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摘要

•Quercetin and 2,3-dehydrosilybin are unstable in aqueous solutions.•Quercetin and 2,3-dehydrosilybin undergo UVA dose-dependent photodegradation.•Putative structure of main 2,3-dehydrosilybińs photoproduct was proposed.•Same structural motif in 2,3-dehydrosilybin and quercetin's photoproduct was found.

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SM,SB,DS,ISB,SC,SD,QE,TA,HPLC-MS,UHPLC-HRMS

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