Issue 4, 2006
From the journal:

Photochemical & Photobiological Sciences

Porphyra-334, a potential natural source for UVA protective sunscreens

Avital Torres,a   Claes D. Enk,b   Malka Hochbergb  and  Morris Srebnik*a  

* Corresponding authors

a Department of Medicinal Chemistry and Natural Products, School of Pharmacy, P.O. Box 12065, Hebrew University of Jerusalem, Jerusalem, Israel
E-mail: msrebni@md.huji.ac.il
Fax: 972-2-675-8201

b Department of Dermatology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel

Abstract

The mycosporine-like amino acid (MAA), porphyra-334 (λmax = 334 nm; ε = 42 300 M−1cm−1), was isolated from the aquatic cyanobacterium Aphanizomenon flos-aquae (AFA) and its structure was verified by spectroscopic methods. The UVA absorption properties of the crude methanolic extract were determined against two commercial sun care products in terms of mean critical wavelength, mean UVA/UVB ratios and UVA protection category (Boots the Chemists, Ltd.). The crude methanolic extract from AFA exhibited maximum UVA protection comparable to that determined for Boots SPF 4.

Graphical abstract: Porphyra-334, a potential natural source for UVA protective sunscreens

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Article information

DOI
https://doi.org/10.1039/B517330M
Article type
Technical Note
Submitted
06 Dec 2005
Accepted
31 Jan 2006
First published
17 Feb 2006

Photochem. Photobiol. Sci., 2006,5, 432-435

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Porphyra-334, a potential natural source for UVA protective sunscreens

A. Torres, C. D. Enk, M. Hochberg and M. Srebnik, Photochem. Photobiol. Sci., 2006, 5, 432 DOI: 10.1039/B517330M

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