Photodegradation of E110 and E122 dyes in a commercial aperitif. A high performance liquid chromatography-diode
F Gosetti1, P Frascarolo, E Mazzucco
1University of Piemonte Orientale, DISAV Dipartimento di Scienze dell'Ambiente e della Vita, via Bellini 25/G, 15100 Alessandria, Italy.
Journal of Chromatography. A
|July 19, 2008
Abstract:
A commercial aperitif containing E110 and E122 dyes is exposed to photo-irradiation in solar box under conditions chosen to simulate sun light irradiation. After 16 days of irradiation the red-coloured aperitif assumes a very pale yellow colour. HPLC-diode array-MS/MS analysis evidences the presence in the commercial aperitif of some impurities with naphthalene-based structures. The structures for the photodegradation products are proposed.
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