Determination of banned Sudan dyes in food samples by molecularly imprinted solid phase extraction-high performance liquid chromatography
作者： Claudio Baggiani , Laura Anfossi , Patrizia Baravalle , Cristina Giovannoli , Gianfranco Giraudi
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摘要: A method for molecularly imprinted SPE of banned Sudan azo-dyes from food samples was investigated. The polymer obtained by suspension polymerization using 1-(4-chlorophenyl)azonaphthalen-2-ol as the mimic template. molecular recognition properties beads were evaluated use a sorbent, in order to develop selective extraction protocol class dyes. optimized resulted reliable (MISPE) suitable HPLC analysis. It main analyte, I, and related II, III, IV, Red B, 7B, while permitted Allura AC, Neococcin, Sunset Yellow FCF not extracted. tested IV five different (hot chilli pepper, hot tomato sauce, sausage, hard boiled egg yolk) at three concentration levels (15, 100, 300 microg/g). demonstrated itself be insensitive presence complex matrices, precise, accurate, with good recovery rates (85-101%). LOD LOQ satisfactory most analytical determinations.
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