The result shows: Rubia Cordifolia L. pigment apt to dissolve on water and have strong one acidproof and alkaline able to bear personning who reduce , able to bear personning who oxidize and able to bear all.

• 结果表明:茜草色素易溶于水且具有较强的耐酸碱性、耐还原性、耐氧化性和耐光性。