关键词: 植物油, 稳定性, 体外抗氧化, 酪氨酸酶抑制, 人体皮肤保湿性

Abstract: In the present study,six vegetable oils,including olive oil,grape seed oil,evening primrose oil,sesame oil,camellia oil and tea tree oil,were used to synthetically assess some properties,such as thermal stability, in vitro antioxidant,tyrosinase inhibition and human skin moisturizing ability.The results showed that olive oil and evening primrose oil were more stable than that of other oils under high temperature heating test.The maximum absorption wavelength only redshifted 4 and 1 nm,respectively,and which absorbance increased by 0.224 and 0.261,respectively.Compared to other oils,olive oil,evening primrose oil and grape seed oil had better in vitro antioxidant activity with IC50 values of 298.40,281.53,277.27 mg/mL,respectively.However,no tyrosinase inhibition was observed in six vegetable oils (25-325 μg/mL) while IC50 of arbutin was 95.13 μg/mL.In human skin moisturizing test,tea tree oil and evening primrose oil showed better activities than that of other oils,because they can significantly improve skin moisture content in different environment.In conclusion,the order of the six oils from optimal to worse were evening primrose oil,tea tree oil,grape seed oi,olive oil,camellia oil and sesame oil.

Key words: vegetable oil, stability, In vitro antioxidant, tyrosinase inhibition, human skin moisturizing ability