In this work, we determined the properties of cellulose pulp and paper from six different lignocellulosic
materials [Eucalyptus globulus, Arundo donax, Leucaena diversifolia, Paulownia fortunei, sunflower stalks
and Chamaecytisus proliferus (tagasaste)], as well as the calorific value and chemical composition of their
autohydrolysis liquor, with a view to assessing their potential for the obtainment of energy, sugars and other
chemical products. An integral fractionation method based on autohydrolysis and organosolv delignification
was used for this purpose. Leucaena diversifolia; P. fortunei; a Paulownia “trihybrid” consisting of elongata,
tormentosa and fortunei varieties; sunflower stalks; and C. proliferus exhibited holocellulose, glucan, xylan
and acetyl group contents similar to, or higher than, those of E. globulus, A. donax and various other
lignocellulosic materials. The amounts of oligomers extracted from C. proliferus, P. fortunei, L. diversifolia
and sunflower stalks at the highest temperatures studied exceeded those provided by eucalyptus. Sequential
autohydroysis and organosolv delignification of L. diversifolia and C. proliferus provided cellulose pulp with
an acceptable kappa number and paper sheets with good strength-related properties. Paulownia fortunei was
the most interesting raw material among those tested; in fact, it provided ethanol pulp with a lignin content of
3.7 –15.3% and a kappa number of 40.5–74.1 after autohydrolysis at 190 ºC, and paper with a tensile index of
17.0–28.9 kN m/kg. These properties are similar to those of pulp and paper from eucalyptus wood. In
addition, P. fortunei exhibited the highest calorific value among the studied materials (4683.8 cal/g).
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