采用高效液相色谱法对反式白藜芦醇和顺式白藜芦醇的光稳定性进行了研究。结果表明:反式白藜芦醇和顺式白藜芦醇均具有光敏性,在光照条件下会有部分转化成顺式/反式白藜芦醇。365 nm紫外光照会导致顺、反式白藜芦醇互相转换,不发生总白藜芦醇的损耗;254 nm紫外光照不仅会使顺、反式白藜芦醇互相转换,也会导致总白藜芦醇的损失。

The photo-stability of trans-resveratrol and cis-resveratrol was investigated using high performance liquid chromatography. The results showed that trans-RES and cis-RES were unstable after being irradiated by UV. They change partly to cis-RES and trans-RES under the UV irradiation. The conversion of trans-RES to cis-RES happend at365nm UV,while the content of total RES do not affected. However,254nm UV not only causes the conversion of trans-RES to cis-RES,but also the reduced content of total RES.