LOD and LOQ
Solutions of standard compounds were diluted at different
concentrations to perform calibration curves in order to dose
the main catechins present in GTP extracts. The detector response was linear over a range from 0.005mg/mLto 0.5mg/
mL for the catechin standards (C, EC, EGC, ECG and
EGCG). The method sensitivity was assessed by determining
the limit of detection (LOD) and the limit of quantification
(LOQ) defined as the concentrations with a signal-to-noise
(S/N) of 3 and 10, respectively. Data are expressed in mg of
standard per gram of dried matter.