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

Química Nova

Universidade de São Paulo, São Paulo, Brasil¹  Kaneko, Telma Mary¹  Pedriali, Carla Aparecida¹  Velasco, Maria Valéria Robles¹  Baby, André Rolim¹  Balogh, Tatiana Santana¹ 

关键词: rutin;    sunscreen;    UVA.;   

DOI  :  10.1590/S0100-40422009000500039

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 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】

Unknown