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. 2020 Oct 22;25(21):4889. doi: 10.3390/molecules25214889

Table 1.

Method validation results for leaves.

Compound LOD
(mg/Kg)
LOQ
(mg/Kg)
Equation
y = (a ± Sa) + (b ± Sb)x
(Linear Range: 0.1–8 mg/Kg)
r2 Intra-Day
Precision
RSDr (%)
(n = 6)
Inter-Day
Precision
RSDR (%)
(n × k = 3 × 3)
RE% ME%
Oleuropein 0.038 0.131 y = (1.18 ± 0.16) + (2.08 ± 0.05) 0.996 5.8 6.5 85.9 −18.6
Tyrosol 0.042 0.125 y = (0.06 ± 0.06) + (1.23 ± 0.02) 0.998 5.4 6.1 93.2 −16.4
Hydroxytyrosol 0.046 0.098 y = (0.18 ± 0.05) + (0.51 ± 0.01) 0.995 4.7 5.8 90.5 −12.7

LOD: limit of detection, LOQ: limit of quantification, r2: regression coefficient, RSD: relative standard deviation, RE: recovery, ME: matrix effect.