Abstract: The tea polyphenols, extracted from tea, is natural antioxidant inhibitor with optimal resistance to oxidation capability. Using peroxide value (POV) and acid value for object, the stabilization of Oneothera Biennis oil on ultraviolet light and ultrasonic radiation with tea polyphenols addition was investigated by anti-oxidation experiment. The results show that during ultraviolet light for 7 hours with 10×10-6, 20×10-6, 30×10-6, 40×10-6 and 50×10-6 of tea polyphenols, the peroxide values (POV) of Oneothera Biennis oil addition content decrease by 40.17%, 44.04%, 49.94%, 58.41% and 66.01% in comparison with that without tea polyphenols, respectively. During ultrasonic radiation for 7 hours with 10×10-6, 20×10-6, 30×10-6, 40×10-6 and 50×10-6 of tea polyphenols addition content, the peroxide values of Oneothera Biennis oil decrease by 14.59%, 32.67%, 35.49%, 43.44% and 64.92% in comparison with that without tea polyphenols, respectively. The acid values of Oneothera Biennis oil with 50×10-6 of tea polyphenols content decrease by 38.71% and 29.63% in comparison with that without tea polyphenols during ultraviolet light and ultrasonic radiation for 7 hours, respectively. So the tea polyphenols show optimal effects on anti-photosensitivity oxidation and anti-ultrasonic radiation for Oneothera Biennis oil.

Key words:  , tea polyphenols； Oneothera Biennis oil； ultrasonic； photosensitivity oxidation；