期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
卷 96, 期 2, 页码 130-135出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotobiol.2009.05.001
关键词
TiO(2) nanoparticles; Linoleic acid; Porcine skin; UVB irradiation; Phenylalanine; Ascorbic acid derivatives
资金
- Regione Piemonte
The effect of some additives, phenylalanine, ascorbyl palmitate and sodium ascorbyl phosphate on the oxidation of linoleic acid and porcine ear skin induced by UV irradiation was investigated, in the absence and in the presence of variously uncoated and coated titania powders. Such additives have, on the one hand, a scavenging activity toward the oxidizing species photogenerated by TiO(2), and on the other one an inhibitory effect toward UVB-induced peroxidation. Sodium ascorbyl phosphate and ascorbyl palmitate displayed a stronger antioxidant effect than phenylalanine toward linoleic acid peroxidation. On porcine skin all the three molecules exhibited both antiradical and antioxidant activity. Their protective effect against peroxidation was higher with porcine skin lipids than with linoleic acid, referable to the chemical differences in the two lipid substrates. (C) 2009 Elsevier B.V. All rights reserved.
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