UVA I-protection effectiveness of bioactive compound and organic UV filters: an in vitro assessment

Química Nova

André Rolim Baby¹  Tatiana Santana Balogh¹  Carla Aparecida Pedriali¹  Telma Mary Kaneko¹  Maria Valéria Robles Velasco¹ 

[1] ,Universidade de São Paulo Faculdade de Ciências Farmacêuticas Departamento de FarmáciaSão Paulo SP ,Brasil

关键词: rutin;    sunscreen;    UVA;   

DOI  :  10.1590/S0100-40422009000500039

来源: SciELO

【 摘 要 】

This research work aimed at determining the UVA effectiveness (UVA I/UV ratio), by diffuse transmittance analysis, of sunscreens developed with a bioactive substance, the rutin, associating or not with organic UVB-UVA filters incorporated at a phosphate-base O/W emulsion. Sunscreens provided conflicting and unpredictable results concerning the anti-UVA protection, specially, at the UVA I region. Possible interactions among the organic UV filters and the polyphenolic bioactive substance may have accounted with improvement or reduction of UV protection by a complex and not yet elucidated mechanism, probably regarding wavelength delocalization to superior or inferior values, by resonant molecule stabilization or destabilization.

【 授权许可】

CC BY-NC   
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