title: Photodegradation of E110 and E122 dyes in a commercial aperitif. A high performance liquid chromatography-diode array-tandem mass spectrometry study.
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.
authors.affiliation: University of Piemonte Orientale, DISAV Dipartimento di Scienze dell'Ambiente e della Vita, via Bellini 25/G, 15100 Alessandria, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Gosetti
authors.forename: P
authors.initials: P
authors.lastname: Frascarolo
authors.forename: E
authors.initials: E
authors.lastname: Mazzucco
authors.forename: V
authors.initials: V
authors.lastname: Gianotti
authors.forename: M
authors.initials: M
authors.lastname: Bottaro
authors.forename: M C
authors.initials: MC
authors.lastname: Gennaro
mesh_terms: D001391:Azo Compounds / Q000737:chemistry*; D001628:Beverages / Q000032:analysis* / Q000528:radiation effects; D002851:Chromatography, High Pressure Liquid / Q000379:methods*; D004396:Coloring Agents / Q000737:chemistry*; D010777:Photochemistry; D013472:Sunlight; D053719:Tandem Mass Spectrometry / Q000379:methods*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents