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Photoprotective Potential of Baccharis antioquensis (Asteraceae) as Natural Sunscreen
Author(s) -
MejíaGiraldo Juan C.,
Winkler Robert,
Gallardo Cecilia,
SánchezZapata Ana M.,
PuertasMejía Miguel A.
Publication year - 2016
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/php.12619
Subject(s) - photoprotection , chemistry , quercetin , kaempferol , polyphenol , flavonols , antioxidant , asteraceae , caffeic acid , glycoside , organic chemistry , food science , botany , biochemistry , biology , photosynthesis
In the quest for new natural agents of photoprotection, we evaluated the photoprotective and antioxidant activity of B. antioquensis leaf extracts as well as its phenolic composition. The methanolic extract treated with activated carbon showed the highest absorption coefficients for UVA ‐ UVB radiation, as well as an antioxidant capacity comparable to butylated hydroxy toluene. Furthermore, the formulation containing this extract showed suitable sensorial and photostable characteristics for topical use, and significant values of UVAPF , critical wavelength ( λ c ), UVA / UVB ratio and sun protection factor (5.3, 378 nm, 0.78 and 9.1 ± 0.1, respectively). In addition, three glycoside derivatives of quercetin, a kaempferol glycoside and a derivative of caffeic acid were the main polyphenolic compounds identified. These results demonstrate the potential of B. antioquensis extracts to be used as active components of novel, natural sunscreens.