Applied Biological Chemistry

Table 1 LC–MS method precision (RSD, %) and accuracy (recovery, %) for catechin and epicatechin using SIL-IS

From: Improved quantification of catechin and epicatechin in red rice (Oryza sativa L.) using stable isotope dilution liquid chromatography-mass spectrometry

Concentration (μg/mL)	Precision (RSD, %)		Accuracy (Recovery, %)
Concentration (μg/mL)	Catechin^a	Epicatechin^b	Catechin^a	Epicatechin^b
5	1.53	0.53	99.67 ± 1.52	99.40 ± 0.52
2.5	2.17	1.30	101.48 ± 2.20	102.24 ± 1.33
1.25	1.29	1.71	99.82 ± 1.29	101.11 ± 1.73
0.63	2.62	3.17	99.83 ± 2.61	100.43 ± 3.18

^aCatechin-2,3,4-¹³C₃
^bepicatechin-2,3,4-¹³C₃
SIL-IS stable-isotope-labeled internal standard

Back to article page