Table 4.

Fitting equations of dose-effect relationships between radical-scavenging capacities and mass concentrations of polysaccharides extracted from Lycium barbarum leaves and their EC₅₀.

Samples	ABTS			DPPH
	Fitting Equations	R 2	EC50 (mg/mL)	Fitting Equations	R 2	EC50 (mg/mL)
VC	Y = −949942X2 + 18852X + 7.6294	0.9916	0.003	Y = 27.688 ln(X) + 231.41	0.9625	0.002
LLPt	Y = 22.243X + 9.2361	0.9809	1.833	Y = 17.423 ln(X) + 85.569	0.9877	0.129
LLP30	Y = −9.399X2 + 48.731X + 20.263	0.9870	0.706	Y = 16.775 ln(X) + 80.264	0.9784	0.165
LLP50	Y = −13.29X2 + 50.981X + 16.908	0.9899	0.828	Y = −21.895X2 + 59.008X + 29.253	0.9889	0.416
LLP70	Y = −6.6817X2 + 26.332X + 27.829	0.9920	1.219	Y = 14.259 ln(X) + 57.793	0.9697	0.579

Note: X and Y represented LLP concentrations (mg/mL) and radical-scavenging rates (%), respectively.