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Taylor and Francis Group, Journal of Dispersion Science and Technology, 5(29), p. 641-652

DOI: 10.1080/01932690701758491

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Photodegradation of cinnamic acid in different media

Journal article published in 2008 by E. Ugazio, M. E. Carlotti, Sapino S. Carlotti M. E., S. Sapino ORCID, M. Trotta, D. Vione, C. Minero
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Distributing this paper is prohibited by the publisher

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Abstract

The photodegradation of cinnamic acid under UVB irradiation was evaluated in different vehicles, such as water solutions at different pH values, Tween-20 micelles, liposomes, and O/W emulsions prepared with Xalifin 15 or Montanov 68 as emulsifiers. The increase of pH decreases the photodegradation of cinnamic acid in all the vehicles studied. Micellar solutions showed a protective effect against cinnamic acid photodegradation; this property increases according to the surfactant percentage. Emulsions appeared to be the most efficient protective systems while liposomes had lower ability to protect cinnamic acid against UVB photodegradation.