Nevertheless,themultivariateoptimizationofcloudpointex-
tractionmethodsisnotusedalot,especiallywhenmultipleana-
lytesaredetermined.Inthepresentwork,cloudpointextraction
as asimple,sensitive,inexpensiveandrapidmethodfollowedby
UV–vis detectionhasbeendevelopedforextractionoffooddyes.
Influence ofimportantvariables(surfactantconcentration,salt
concentration andpH)wereinvestigatedandoptimizedby
Doehlert designcombinedwithresponsesurfacemethodology
(RSM) usingthedesirabilityfunction(DF)asmaximizecriterionof
the response.