Photodegradation of E110 and E122 dyes in a commercial aperitif. A high performance liquid chromatography-diode array-tandem mass spectrometry study.
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.
Gosetti
F
F
University of Piemonte Orientale, DISAV Dipartimento di Scienze dell'Ambiente e della Vita, via Bellini 25/G, 15100 Alessandria, Italy.
Frascarolo
P
P
Mazzucco
E
E
Gianotti
V
V
Bottaro
M
M
Gennaro
M C
MC
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*
D001391:Azo Compounds; D004396:Coloring Agents