Peanut
plant material (dry powder or homogenate) was loaded on to the
adsorption column with 35% ethanol at pH 1.5, and the column was
washed for impurities with 35% ethanol at pH 2.5, during these process
there was absolutely no ABA leakage from the column. ABA in
the column was completely eluted with 2 mL of 80% ethanol at pH
10.