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Gewählte Publikation:

Barbini, S; Jaxel, J; Karlstrom, K; Rosenau, T; Potthast, A.
(2021): Multistage fractionation of pine bark by liquid and supercritical carbon dioxide
BIORESOURCE TECHNOL. 2021; 341, 125862 FullText FullText_BOKU

Abstract:
Multistage fractionation of pine bark was performed using subcritical and supercritical CO2 at increasing pressures and temperatures. In total, seven fractions were collected, which demonstrated different enrichments of families of compounds. In particular, subcritical CO2 yielded 41% of the total extract in which unsaturated fatty acids represented the most abundant family. The subsequent five supercritical steps increased the recovery of sterol esters, wax esters and resin acids at higher temperatures and pressures, reaching 80% of the total extractable mass. In the last step, using ethanol as a co-solvent, an additional 20% of extract was recovered, which was enriched with phenolics and glycerol. A full characterisation of the extracts was accomplished by high-temperature GC-MS/FID using four internal standards, which were representative of the main classes of compounds contained in the pine bark extract.
Autor*innen der BOKU Wien:
Barbini Stefano
Jaxel Julien
Potthast Antje
Rosenau Thomas
BOKU Gendermonitor:


Find related publications in this database (Keywords)
Bark
Biorefinery
Sub
Supercritical CO2 extraction
Extractives
Gas chromatography


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