Quantitative Analysis and Biological Efficacies regarding the Neuroprotective and Antineuroinflammatory Actions of the Herbal Formula Jodeungsan in HT22 Hippocampal Cells and BV-2 Microglia

Table 2

Linear range, regression equation, correlation coefficients, LODs, and LOQs for compounds.

Compound	Linear range; (μg/mL)	Regression equation		Correlation coefficient ()	LOD​; (μg/mL)	LOQ​; (μg/mL)
		Slope ()	Intercept ()
Narirutin	12.5–400	18206	63887	0.9998	0.308	0.932
Hesperidin	31.25–500	20407	91283	0.9999	1.054	3.194
Luteolin	1.5625–25	40612	3770.9	1.0000	0.038	0.114
Apigenin	0.78125–25	81186	13562	0.9999	0.013	0.041
6-Gingerol	3.125–50	6274.2	2670.6	1.0000	0.175	0.531

, means peak area and means concentration (μg/mL); LOD (Limit of detection): 3.3 × (SD of the response/slope of the calibration curve); LOQ (Limit of quantitation): 10 × (SD of the response/slope of the calibration curve).