PMID- 19174222 OWN - NLM STAT- MEDLINE DCOM- 20090227 LR - 20161125 IS - 1873-3573 (Electronic) IS - 0039-9140 (Linking) VI - 78 IP - 1 DP - 2009 Apr 15 TI - Development of a method for the analysis of seven banned azo-dyes in chilli and hot chilli food samples by pressurised liquid extraction and liquid chromatography with electrospray ionization-tandem mass spectrometry. PG - 178-86 LID - 10.1016/j.talanta.2008.10.052 [doi] AB - An automated, confirmatory and sensitive procedure has been developed and validated for the determination of Sudan (I-IV), Sudan Orange G, Sudan Red 7B and Para Red in hot chilli food samples. The proposed method includes pressurised liquid extraction (PLE) with acetone, gel permeation chromatography (GPC) clean-up and detection by liquid chromatography (LC) coupled to electrospray ionization in positive mode tandem mass spectrometry (ESI-MS-MS). The main parameters affecting the performance of the different ionization sources and PLE parameters were previously optimised using statistical design of experiments (DOE). The method was in-house validated on chilli powder and chilli meat. Linear calibrations were obtained with correlation coefficients R(2)>0.999. The limits of detection (LOD) and quantification (LOQ) of the method were in the ranges of 0.002-0.012 ng g(-1) and 0.006-0.036 ng g(-1), respectively for chilli powder. The decision limit and detection capability were between 0.005-0.022 ng g(-1) and 0.007-0.026 ng g(-1), respectively for chilli meat. Recoveries ranged from 94% to 105%. The applicability of the method to the determination of azo-dyes in hot chilli products was demonstrated. FAU - Pardo, Olga AU - Pardo O AD - Public Health Laboratory of Valencia, Conselleria de Sanitat, Cami de la Marjal, Valencia, Spain. pardo olg@gva.es FAU - Yusa, Vicent AU - Yusa V FAU - Leon, Nuria AU - Leon N FAU - Pastor, Agustin AU - Pastor A LA - eng PT - Journal Article DEP - 20081107 PL - Netherlands TA - Talanta JT - Talanta JID - 2984816R RN - 0 (Azo Compounds) RN - 0 (Food Coloring Agents) RN - 1Q6EJU80RN (Orange G) RN - 6368-72-5 (fat red 7B) RN - 8C1M5O3ECT (sudan red) SB - IM MH - Azo Compounds/*analysis MH - Capsicum MH - Chromatography, Liquid/methods MH - Food Analysis/instrumentation/*methods MH - Food Coloring Agents/*analysis MH - Food Contamination MH - Methods MH - Spectrometry, Mass, Electrospray Ionization/methods EDAT- 2009/01/29 09:00 MHDA- 2009/02/28 09:00 CRDT- 2009/01/29 09:00 PHST- 2008/07/30 00:00 [received] PHST- 2008/10/26 00:00 [revised] PHST- 2008/10/31 00:00 [accepted] PHST- 2009/01/29 09:00 [entrez] PHST- 2009/01/29 09:00 [pubmed] PHST- 2009/02/28 09:00 [medline] AID - S0039-9140(08)00801-1 [pii] AID - 10.1016/j.talanta.2008.10.052 [doi] PST - ppublish SO - Talanta. 2009 Apr 15;78(1):178-86. doi: 10.1016/j.talanta.2008.10.052. Epub 2008 Nov 7.