Nowadays, lignin is gaining importance as a potential source for aromatic chemicals. Commercial lignins are usually
contaminated with cellulose, hemicelluloses and other inorganic impurities, which constitute an obstacle in their direct
processing for obtaining aromatic precursors. In this work, lignins obtained from Malus domestica by alkaline
extraction (7.5% NaOH, 90 min, 90 ºC) and organosolv (60% ethanol, 90 min, 180 ºC) processes were treated with
green solvents, to reduce their impurities. The green solvents used were water and [BMI][MeSO4], and the obtained
lignin was characterized by different techniques (ATR-IR, TGA, and HPLC). The results showed that soda lignin has
more impurities than organosolv lignin, and that ionic liquid (IL) is the best purification method.