Preventive Effect of Small-Leaved Kuding Tea (Ligustrum robustum (Roxb.) Bl.) Polyphenols on D-Galactose-Induced Oxidative Stress and Aging in Mice

Table 1

Gradient elution procedure.

No.	Time (min)	Current speed (mL/min)	0.1% formic acid (%)	Acetonitrile (%)
1	0	0.6	90	10
2	6.5	0.6	81.5	18.5
3	27.5	0.6	64.5	35.5
4	32.5	0.6	0	100
5	42.5	0.6	0	100