Photodegradation of E110 and E122 dyes in a commercial aperitif. A high performance liquid chromatography-diode array-tandem mass spectrometry study

F. Gosetti, P. Frascarolo, E. Mazzucco, V. Gianotti, M. Bottaro, M. C. Gennaro

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)58-63
Number of pages6
JournalJournal of Chromatography A
Volume1202
Issue number1
DOIs
Publication statusPublished - 15 Aug 2008

Keywords

  • Aromatic amines
  • Food azo dyes
  • HPLC
  • Mass spectrometry
  • Photodegradation
  • Sun light decolourisation

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