Table 2. Retention time, linear regression equation, correlation coefficient (r
2
), linear range, LOD, and LOQ of active compounds
Compounds
Retention time
Regression equation
r
2
Linear range (ng/mL)
LOD (ng/mL)
LOQ (ng/mL)
Decursinol angelate (1)
40.982
y = 395.39x – 193.52
0.9999
5–1,000
0.72
2.18
Decursin (2)
40.154
y = 370.47x – 606.95
0.9999
5–2,000
1.85
5.63
LOD, limit of detection; LOQ, limit of quantification.