Systematic Characterization of the Chemical Components of Canna edulis Ker-Gawl Based on UHPLC Q-Exactive Orbitrap MS Technology

Table 2

Method validation.

Compounds	Regression equations	Linearity (r^2)	Linear range (μM)	LODs (ng/mL)	LOQs (ng/mL)	Precision (RSD, %, n = 6)	Accuracy (RSD, %, n = 9)	Recovery rate (%)	Content (mg/g)
D-(-)-quinic acid	y = 13397835^∗x + 10108567	0.9998	0.781-50.000	0.015	0.050	1.2	0.7	104.8	0.076
Caffeic acid	y = 14778853^∗x + 114694406	0.9991	7.813–500.000	0.703	2.350	1.7	0.8	103.0	0.110
Ferulic acid	y = 984823^∗x + 1353717	0.9995	0.260-16.667	0.038	0.126	0.9	2.4	103.3	0.003