White Birch Trunk Extracts as a Source of Organic Compounds

Abstract

Extracts of white birch (Betula pendula) may be a useful source of aromatics, polyols, and fatty acids. Ultra performance liquid chromatography/electrospray ionization‐quadrupole time‐of‐flight mass spectrometry (UPLC/ESI(−)‐QTOFMS) and gas chromatography/electron impact‐quadrupole mass spectrometry (GC/EI‐QMS) were applied to analyze the soluble fractions obtained after the sequential extraction of the bark and interior wood of a white birch trunk using methanol and the ionic liquid 1‐butyl‐3‐methylimidazolium chloride. Methanolic extracts of both the bark and interior wood contained diarylheptanoids and polyols. By contrast, fatty acids were found only in the methanolic extracts of interior wood. Additional diarylheptanoids, 3‐O‐caffeoyl‐betulin, and smaller phenolic compounds were extracted with the ionic liquid. Surprisingly, the ionic liquid extracts included additional compounds, which may be have formed in a reaction of the ionic liquid. The use of the bark resulted in more soluble material. Thus, this bark may be preferred as a renewable resource for organic materials.

A Green Step to New Monomers and Their Polymerization

“…Bark of Betula Pendula is a typical renewable material outside the food chain that may be useful for manufacturing of several organic compounds such as aromatic compounds, terpenes, and fatty acids separated by extraction with various organic solvents, ionic liquids or supercritical carbon dioxide . Furthermore, alkaline extraction has been successfully applied to isolate xylan e. g. from birch wood .…”

Crosslinked polymers based on monomers derived from renewable resources and their application potential

“…The latter is described as a hydrolytic hydrogenolysis reaction of cellulose [21,22]. Lignin available in bark, wood, and plants provides compounds comprising aromatic moieties derived from natural resources [23,24].…”

Crosslinked Polymers Based on Monomers Derived from Renewable Resources and Their Application Potential

“…[16,17] Lignin available in bark, wood and plants provides compounds comprising aromatic moieties derived from natural resources. [18,19] STRUCTURAL VARIABILITY OF THE CROSSLINKABLE BIO-BASED MONOMER Various structural modifications of the bio-based dimethacrylate may be possible by choosing different diol compounds for esterification with oleic acid resulting in variation of the bridge between the oleate structures on the one hand and by selection of different reagents for ring opening reaction of the epoxidized di-oleates that give a structural variation of the substituents R 1 , R 2 , R 3 , and R 4 on the other hand (Scheme 1). The latter may contain either an OH-group or aromatic structure and two (meth)acrylate groups.…”