Research Article

Study on Quality Standard of Processed Curcuma Longa Radix

Table 3

Linear ranges survey of 3 curcuminoids in Curcuma Longa Radix.

Standard substanceRegression equationLinear range (μg/mL)Correlation coefficient

Curcumin3.3242~13.8510.9997
Desmethoxycurumin0.6768~2.820.9997
Bisdesmethoxycurum0.4699~1.9580.9993