Table 2. Pearson's correlation coefficients between the phytochemicals and antioxidant activity in C. paliurus leaves.

Index	Water-soluble polysaccharide	Total flavonoid	>Total polyphenol	3-O-caffeoyluinic acid	4-O-caffeoyluinic acid	Quercetin-3-O-glucuronide	Quercetin-3-O-galactoside	Isoquercitrin	Kaempferol-3-O-glucuronide	Kaempferol-3-O-glucoside	Quercetin-3-O-rhamnoside	Kaempferol-3-O-rhamnoside
IC50 of DPPH	−0.481**	−0.435**	−0.670**	−0.401*	−0.563**	−0.524**	−0.297	−0.163	−0.202	0.055	0.031	−0.305*
IC50 of ABTS	−0.396**	−0.565**	−0.693**	−0.317*	−0.413**	−0.457**	−0.260	−0.330*	−0.324*	0.112	0.154	−0.242
EC50 of reducing power	−0.558**	−0.506**	−0.725**	−0.611**	−0.661**	−0.715**	−0.442**	−0.001	−0.401**	0.189	−0.194	−0.525**

Note:

* and ** indicate significant effects at p < 0.05 and p < 0.01, respectively.