Assessment of the Photoprotective Activity of Lippia Species from Brazil and Their Use as Single UV Filters in Sunscreens
作者： Karla Mara Gonçalves , Hudson Caetano Polonini , Lyderson Facio Viccini , Marcos Antônio Fernandes Brandão , Nádia Rezende Barbosa Raposo
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摘要: Objective: The present in vitro study aimed to evaluate the photoprotective activity of four plant species from Brazil. Material and Methods: Plants ( Lippia brasiliensis , L. pseudothea rotundifolia rubella ) were collected Minas Gerais state, Brazil, ethanolic extracts obtained. These incorporated neutral lotions their SPF, UVAPF, UVA/ UVB Ratio Critical Wavelength determined by diffuse transmittance spectroscopy. Results: best results obtained with . It was demonstrated that this generated an estimated SPF 9 ± 1.0, effective UVAPF 8 0.7, at 15% a lotion. Conclusion: Broad spectrum sunscreens when all used as single UV filter formulations, although presented UVA/UVB balance. Key words: Diffuse transmittance, Natural products, Plant extracts, Sunscreens.
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