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Lichenic extracts and metabolites as UV filters

Paper ID Volume ID Publish Year Pages File Format Full-Text
30624 44494 2013 12 PDF Available
Title
Lichenic extracts and metabolites as UV filters
Abstract

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).

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► 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.

Keywords
SPF, Sun Protection Factor; PF-UVA, UVA-Protection Factor; O/W, oil-in-water; OMC, Octylmethoxycinnamate; PMMA, Polymethylmethacrylate; MOC, methyl β-orcinolcarboxylate; PIF, photo irritancy factor; ROS, reactive oxygen speciesPhotoprotection; Lichen; Sun
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology B: Biology - Volume 120, 5 March 2013, Pages 17–28
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us