LC-MS Method Using Cloud Point Extraction for the Determination of Permitted and Banned Azo Colors in Liquid, Semi-liquid and Solid Food Matrices

Instrument Type: LCMS

Colors are food additives that are regulated in the EU, USA, and China. Only approved food colors can be used and others are banned such as some azo compounds, because of their potential carcinogenicity. In this Method, we describe a new Cloud Point Extraction (CPE) method for determining the presence of approved water soluble and banned fat soluble azo colors, followed by separation on a Thermo Scientific Hypersil GOLD column and detection with a Thermo Scientific MSQ Plus single quadrupole mass spectrometer.

Extraction and determination of banned azo dyes using Thermo Scientific HyperSep SLE and a Thermo Scientific TraceGOLD TG-5MS GC column

Instrument Type: GCMS

The Thermo Scientific GC system is applied for the determination of banned azo dyes. The samples are prepared using Thermo Scientific HyperSep solid supported liquid-liquid extraction (SLE), and the separation performed using a Thermo Scientific TraceGOLD TG-5MS GC column.

Improved analysis of azo dyes using a Thermo Scientific Accucore RP-MS HPLC column

Instrument Type: HPLC

The Thermo Scientific HPLC system is applied for the analysis of azo dyes. The separation is performed on a Thermo Scientific Accucore RP-MS HPLC column, with UV detection at 225 nm.