Synergic effect of methanol and water on pine liquefaction.

Highlights: [•] Pine and its liquefaction residue were liquefied in a methanol/water mixed solvent. [•] The mixed solvent showed significantly synergic effect on pine liquefaction. [•] The compositions of bio-oils obtained in different solvent are quite different. [•] The synergic effect is mainly ascribed to the interaction between the two solvents. [ABSTRACT FROM AUTHOR]