Characterisation and fractioning of Tectona grandis bark in view of its valorisation as a biorefinery raw-material

Extractives were present preferentially in the fines, with about 30% more extractives than the coarse fraction. Lignin content and monosaccharide composition were similar in the different bark fractions. A difference between fractions was found in relation to suberin content which was lower in the fines: 0.6% and 3.5% in the fine and medium fractions, respectively.