Object: To study properties of α-cyclodextrin inclusion compound of lutein esters. Methods: Inclusion process was evaluated by UV spectroscopy and then binding constants was calculated,inclusion compound was prepared by trituration method,lutein solubility was used as the index to determine the appropriate inclusion ratio,inclusion compound was confirmed by differential thermal analysis,infrared diffuse reflection spectrum and UV-vis diffuse reflection spectrum,the solubility and the stability of α-cyclodex...