کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
30624 | 44494 | 2013 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Lichenic extracts and metabolites as UV filters Lichenic extracts and metabolites as UV filters](/preview/png/30624.png)
Three lichen extracts and ten lichenic compounds have been screened for their photoprotective activities. The determination of their Sun Protection Factor (SPF) and Protection Factor-UVA (PF-UVA) values was done in vitro. Among them, a Lasallia pustulata extract and gyrophoric acid exhibited SPF values over 5, which is better than Homosalate (SPF ≈ 4). Their photoprotective properties are only slightly modified after a 2-hours period of irradiation. Salazinic acid and L. pustulata presented characteristics of a UVA booster like the butyl-methoxydibenzoylmethane (Avobenzone) (PF-UVA ≈ 2 vs. 2.8 for Avobenzone). Salazinic acid was a better anion superoxide scavenger than ascorbic acid and none of them exhibited a photosensitizing cytotoxicity by exposing them on HaCaT cells to UVA radiations (photo-irritancy factor PIF < 5).
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► Lichen extracts and compounds are evaluated for their photoprotective activities.
► Lasallia pustulata extract and gyrophoric acid are valuable UV filters candidates.
► Salazinic acid presents characteristics of a UVA booster.
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 120, 5 March 2013, Pages 17–28