Abstract
Rosa roxburghii Tratt seed oil (RSO) and β-carotene (βC) were chosen to prepare proliposomes by the thin-film dispersion method. The characteristics of unloaded proliposome, RSO proliposome (L-R), βC proliposome (L-β), and RSO/βC proliposome (L-R-β) were analyzed, and their antioxidant activity, storage stability, and release properties were investigated. The proliposomes had an encapsulation efficiency (RSO, βC) higher than 83.10%, nanometer size, smooth surface, and irregular structure. L-R-β showed better dispersibility, stability, and antioxidant activity than L-R and L-β. Simultaneous encapsulation of RSO and βC reduced the phospholipid oxidation of proliposomes and improved the retention rate of RSO in storage environments of 4, 25, and 40°C. Moreover, the RSO and βC release kinetics of proliposomes in the simulated saliva fluid and gastric fluid phases can be described by the first-order model, and the Korsmeyr-Peppas method was applied to describe their release mechanism in the simulated intestinal fluid phase.
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