Table 2.

Calibration curves, correlation coefficients (r), and linear ranges of the six components.

Analyte	Calibration curve	r	Linear range (μg/ml)	LODs (ng/ml)	LOQs (ng/ml)
Spinosin	y = 2.08e6x + 7.35e5	0.999 6	0.197–6.312	0.039	0.118
6‴-Feruloylspinosin	y = 1.32e6x + 3.79e5	0.999 7	0.184–5.885	0.092	0.276
Jujuboside A	y = 1.05e4x − 241.13	0.999 6	0.031–0.991	3.112	9.336
Jujuboside B	y = 7.28e4x − 2926.02	0.999 6	0.021–0.668	2.131	6.393
Camelliaside B	y = 1.10e7x + 6.01e5	0.999 7	0.020–0.640	0.099	0.299
Betulinic acid	y = 1.00e7x + 9.11e5	0.999 8	0.141–4.504	0.071	0.213