【摘要】 Parsol 1789是一种良好的UVA吸收剂 ,能充分吸收 32 0～ 40 0nm的紫外光 ,目前仍是使用频率较高的防晒剂 ,但光照会使之大幅分解 ,而使防护能力下降。为抑制Parsol 1789的光分解 ,增强其光稳定性 ,本文选用黄酮类化合物作抑制剂进行抑制实验。研究发现 ,有些黄酮类化合物 (如芦丁 )对Parsol 1789的光分解有较好的抑制作用 ,光分解的最大抑制率可达 93.8%。更多还原

【Abstract】 Parsol 1789, which can effectively absorb the ultraviolet light in 320～400nm, is an excellent absorber of UVA. Currently it is still frequently used as sun-screening agent. In the sunlight, however, it will be photolysised rapidly and its photoprotection against UVA will greatly decrease. In order to inhibit its photolysis and enhance its photostability, the flavonoides were selected for photolysis inhibitors of Parsol 1789. It has been found that some flavonoides, for example Rutin, have better effect of inhibition and the maximum inhibitory rate of photolysis of Parsol 1789 is 93.8%.更多还原