Optimization Studies on the Extraction of Flavone Di-C-glycosides from Premna fulva Craib by Deep Eutectic Solvents

Table 2

Calibration curve, LOD, and LOQ of the five investigated compounds.

Analyte	Calibration curve	r ^2	LOD (μg)	LOQ (μg)
Apigenin 6,8-di-C-β-D-glucopyranoside (1)	Y = 1000000X + 81351	0.9992	0.18	0.54
Apigenin 6-C-β-D-xylopyranosyl-8-C-β-D-glucopyranoside (2)	Y = 446642X − 6968.9	0.9977	0.14	0.43
Apigenin 6-C-β-D-xylopyranosyl-8-C-β-D-galactopyranoside (3)	Y = 723977X − 154149	0.9936	0.24	0.72
Apigenin 6-C-β-D-glucopyranosyl-8-C-β-D-xylopyranoside (4)	Y = 309159X − 5670.3	0.9918	0.19	0.57
Apigenin 6-C-β-D-galactopyranosyl-8-C-β-D-xylopyranoside (5)	Y = 817494X + 15891	0.9998	0.06	0.18