An azo dye
Sudan red 7B is an azo dye.1 It displays an absorption maxima of 525 nm.2 Sudan red 7B has been used to stain lipids in hepatocytes and suberin lamellae in plant cell walls.3,4 It has also been included as a standard in LC-MS/MS-based protocols for the detection of banned colorants in foodstuffs.1
1.Pardo, O., Yusà, V., León, N., et al.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 spectrometryTalanta78(1)178-186(2009) 2.Nagase, M., Matsueda, T., and Osaki, Y.Determination of Sudan III, Sudan IV and Sudan red 7B in water by high performance liquid chromatography after mixing extractionAnal. Sci.5(2)157-160(1989) 3.Delzenne, N.M., Hernaux, N.A., and Taper, H.S.A new model of acute liver steatosis induced in rats by fasting followed by refeeding a high carbohydrate-fat free diet. Biochemical and morphological analysisJ. Hepatol.26(4)880-885(1997) 4.Brundrett, M.C., Kendrick, B., and Peterson, C.A.Efficient lipid staining in plant material with Sudan red 7B or fluorol [correction of fluoral] yellow 088 in polyethylene glycol-glycerolBiotech. Histochem.66(3)111-116(1991)
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