Table 1.

The signal-to-noise ratio (S/N) values of baicalein-7-O-gentiobioside under different concentrations and flow rates of DPPH.

Concentration of DPPH (mol/L)	S/N	Flow rate of DPPH (mL/min)	S/N
1 × 10−4	19.35	0.2	19.84
5 × 10−5	18.00	0.3	42.99
1 × 10−5	23.67	0.4	53.84
5 × 10−6	9.56	0.6	76.36
1 × 10−6	ND	0.8	133.43
1 × 10−7	ND	1.0	255.27

ND: Not detected.