Lycopene is a natural pigment and antioxidant that contains several conjugated double bonds and has several beneficial biological activities.In this study,two different lycopene emulsions were prepared by high-pres-sure homogenization using camellia saponin and Tween 80 as emulsifiers.The effects of different emulsifiers on the physical stability,retention rate and lipid oxidation of the emulsions during storage were investigated.The results demonstrated that the ζ-potential of the emulsions remained above 30 mV even after 28 days of storage,albeit with a significant decrease.Following a storage period of 14 days at 50 ℃,the POV value of the Tween 80-stabilised e-mulsion escalated from its initial level of 4.30 mmol/kg to an elevated level of 8.98 mmol/kg,whereas that of the CS emulsion only experienced a marginal increase by 1.70 mmol/kg.It was shown that as an emulsifier,camellia sapo-nin can effectively improve the oxidative stability of the emulsions during storage,slowing down the process of lipid oxidation and reducing the production of oxidation products.
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