两种紫苏水溶性色素物质化学性质的研究

以日本红紫苏及本地紫青紫苏为材料，探讨了2种紫苏的水溶性色素物质的基本化学性质及抗氧化活性等，结果表明，不同种类紫苏的水溶性色素物质的化学性质有较大差别，以紫苏色素对热、光等的稳定性及多酚类物质含量、色素含量、抗氧化活性均高于紫青紫苏、多酚类物质和色素物质的含量与紫苏抗氧化活性之间存在显著的相关关系，证明了多类物质在紫苏抗氧化活性中的作用。

Studies on Chemical Property of Water-Soluble Pigment Material from Two Kinds of Perillas

The chemical stability and antioxidative activity of the two kinds of watersoluble pigment material extracted from Japanese red Perilla and local Perilla were investigated. The results showed that the chemical properties of two kinds of Perillas were quite different; Pigment stability of Japanese red Perilla to heat and light was better than that of local Perilla. Both of antioxidative activity and contents of polyphenol and pigment of Japanese red Perilla are higher than that of local Perilla. There was a significant correlation between the antioxidative activity of Perillas and the level of contents of polyphenol and pigment. It was proved that there was a direct contribution of polyphenol and pigment in antioxidative activity of Perillas.