The Use of a Molybdenum Polyoxometalated Compound to Increase the Amount of Extractives from Wood Wastes

Mecca, Marisabel; Todaro, Luigi; D’Auria, Maurizio

doi:10.3390/biom8030062

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…These studies show that heat modification and the use of molybdenum catalysts increase fatty acid esters (which have possible use in biodiesel synthesis) and that an increased amount of carbohydrates allows obtaining valuable amounts of biologically active compounds [16,17].…”

Section: Introductionmentioning

confidence: 96%

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

D’Auria

Mecca

Bruno

et al. 2021

Forests

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

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Section: Introductionmentioning

confidence: 96%

“…Previous studies have shown that the water extraction procedure made it possible to obtain mainly water-soluble compounds while non-polar or less polar lipophilic compounds cannot be extracted using this procedure [16].…”

Section: Introductionmentioning

confidence: 99%

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

D’Auria

Mecca

Bruno

et al. 2021

Forests

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show abstract

“…P. tomentosa extract was obtained by the treatment of wood wastes in an autoclave, in the presence of micrometric crystals of H3PMo12O40, according to the method previously described [28] .…”

Section: Introductionmentioning

confidence: 99%