. 2019 Nov 10;24(22):4068. doi: 10.3390/molecules24224068

Table 1.

Analytical parameters of the proposed method.

Compound	Linearity , * (n = 15)		Mean Found Concentration ** (n = 3)		Precision, rsd (%) (n = 3)				LOD (µg mL⁻¹)	LOQ (µg mL⁻¹)
	y = (a ± s_a) + (b ± s_b) x	R²	2.5 µg mL⁻¹	7.5 µg mL⁻¹	Intraday		Interday
	y = (a ± s_a) + (b ± s_b) x	R²	2.5 µg mL⁻¹	7.5 µg mL⁻¹	2.5 µg mL⁻¹	7.5 µg mL⁻¹	2.5 µg mL⁻¹	7.5 µg mL⁻¹
Limonene	y = (−77 ± 2) + (433 ± 6)x	0.997	2.3 ± 0.1	6.5 ± 0.4	2	0.6	3	4	0.1	0.4
Lupenone	y = (−22 ± 9) + (63.9 ± 1.6)x	0.994	2.4 ± 0.1	7.0 ± 0.1	4	0.8	7	7	0.25	0.8
Lupeol	y = (−42 ± 12) + (111 ± 2)x	0.996	2.6 ± 0.1	7.4 ± 0.2	1.4	2	7	8	0.25	0.8
β-Amyrin	y = (−20 ± 17) + (135 ± 3)x	0.995	2.3 ± 0.1	7.5 ± 0.6	3	8	8	8	0.25	0.8
α-Amyrin	y = (72 ± 42) + (313 ± 8)x	0.994	2.9 ± 0.2	8.4 ± 0.1	9	17	16	17	0.25	0.8

* within the range 0.25–10.0 μg mL⁻¹ for limonene and 0.5–10.0 μg mL⁻¹ for the rest of compounds (a: intercept; s_a: standard deviation of the intercept; b: slope; s_b: standard deviation of the slope; R²: squared correlation coefficient; rsd: residual standard deviation); ** all values expressed with digits known plus the first uncertain digit.