Abstract:Acidic aqueous solution was used as the extractant for the extraction of red color from black carrot.Adsorption of black carrot red color onto six macroporous resins（LS-610B，BM3，D101，LSA-40，AB-8，LSA-305）was screened to develop a potential approach for large-scale production of black carrot red color，and two promising resins（LS-610B，BM3）were selected for the following static and dynamic adsorption/desorption experiments.Results showed that the optimal adsorption pH of the extracted solution was 2.0，the adsorption data of resin LS-610B could be well fitted both by Langmuir and Freundlich equations，with correlated coefficient of 0.979 9 and 0.974 0，respectively.The adsorption data of resin BM3 could be better fitted by Langmuir equation，with correlated coefficient of 0.966 2，exhibiting mono-layer adsorption mechanism，and them pseudo first-order model could describe the dynamic model better for the two resins，internal and external diffusion controlling the adsorption rate.The optimal desorption condition was 65%ethanol aqueous solution containing 0.3%citric acid.