Figure 5
From: Optimization of ultrasonic pretreatment and analysis of chlorogenic acid in potato leaves
TLC (A: chlorogenic acid standard; B: potato leaf extract) 1: ethyl acetate acetone formic acid water (7:3:2:1, V/V); 2: ethyl acetate acetone formic acid (7:3:2, V/V); 3: ethyl acetate formic acid water (10:3:1, V/V).
