Table 3.

The Regression equations, LODs and LOQs of standard compounds

	Compound	Regression equation	Correlation coefficient (R2)	LOD (mg ml−1)	LOQ (mg ml−1)
1	gallic acid	Y = 1.65 × 103X + 1.12 × 106	0.9999	0.106	0.323
2	catechin	Y = 1.34 × 105X + 3.05 × 104	0.9980	0.096	0.293
3	vanillin	Y = 7.31 × 105X + 1.34 × 105	0.999	0.064	0.195
4	rutin	Y = 1.42 × 106X-2.65 × 105	0.9997	0.062	0.188
5	luteolin7-O-glucoside	Y = 7.98 × 106X-2.55 × 105	0.9998	0.047	0.143
6	oleuropein	Y = 4.86 × 105X + 1.26 × 106	0.9966	0.049	0.151
7	quercetin	Y = 3.18 × 107X-1.87 × 106	0.9997	0.056	0.169

LOD limit of detection, LOQ limit of quantification