Methods Curcuma was lixiviated in 70% ethanol and extracted with light petroleum to remove aetherolea to get Curcuma ethanol extraction, and to get curcumin with silica gel adsorption method.

• 方法：将姜黄粉末用70%25乙醇提取，石油醚脱脂的方法制备出姜黄醇提取物，采用硅胶吸附的方法从姜黄醇提物中制备得到姜黄素。