Extraction Methods and Their Influence on Yield When Extracting Thermo-Vacuum-Modified Chestnut Wood

Improvements in the yield and solubility of chestnut wood extractives, by using different extraction methods molybdenum catalysts as support, have rarely been reported literature. Many studies focus on parts trees, except for chemical characteristics remaining extractives achieved from thermally modified (THM) (Castanea sativa Mill) wood. This research seeks to better understand effects techniques extractives. GC-MS analysis chloroform soluble insoluble fractions was also used. Accelerated Solvent Extraction (ASE) 110 °C, Soxhlet, autoclave were used obtain untreated (170 °C 3 h). Ethanol/H2O, ethanol/toluene, water solvents each technique. A polyoxometalate compound (H3PMo12O40) MoO3 supported silica catalysts. The THM induced a change wood’s surface color (ΔE = 21.5) an increase mass loss (5.9%), while equilibrium moisture content (EMC) reduced 17.4% compared control yields their always higher mainly ASE without catalyst showed results technique type (untreated THM). Ultimately, amount extractive dissolved solvent will differ, choice depend intended final application extracted product.