TY - GEN
T1 - Bioactive compounds extraction from forestry residues using ionic liquids with emphasis on solvents recycling
AU - Lauberts, M.
AU - Dizhbite, T.
AU - Lauberte, Līga
AU - Arshanitsa, A.
AU - Jurkjane, V.
AU - Jashina, L.
AU - Telysheva, G.
N1 - Publisher Copyright:
© 2018 NWBC 2018 - Proceedings of the 8th Nordic Wood Biorefinery Conference. All rights reserved.
PY - 2018
Y1 - 2018
N2 - Carried out the (polyphenol nature) investigations regarding to characterization of the plant biomass processing by-products, using fractionation, namely, treatment with ionic liquids (ILs), using conventional and microwave assisted extraction (MAE). The suitability of ionic liquids (different imidazolium based ILs) for the fractionation of grey alder bark (Alnus incana) in comparison with organic solvents has been evaluated and the potential of the obtained fractions as antioxidants has been determined. The results of the study have shown that, using the select "antisolvents", it is possible to separate the carbohydrate fraction of the polyphenol fraction with a fairly high selectivity. The work shows the whole chain of analytical process performed, from sampling to full analysis, emphasizing the evaluation of the effect of the extraction process on the target polyphenol compounds, their composition and antioxidant activity. The solid phase extraction allows an effective increase in the compounds' recoverability from the IL dissolved part, which cannot be re-extracted with "antisolvents", and allows the recovery of ionic liquid, which is a problematic issue in biomass processing with ionic liquids in the world. In addition, the analytical process integrates sustainable development, which reduces the use of toxic and hazardous substances in extraction processes, replacing them with more environmentally friendly ones.
AB - Carried out the (polyphenol nature) investigations regarding to characterization of the plant biomass processing by-products, using fractionation, namely, treatment with ionic liquids (ILs), using conventional and microwave assisted extraction (MAE). The suitability of ionic liquids (different imidazolium based ILs) for the fractionation of grey alder bark (Alnus incana) in comparison with organic solvents has been evaluated and the potential of the obtained fractions as antioxidants has been determined. The results of the study have shown that, using the select "antisolvents", it is possible to separate the carbohydrate fraction of the polyphenol fraction with a fairly high selectivity. The work shows the whole chain of analytical process performed, from sampling to full analysis, emphasizing the evaluation of the effect of the extraction process on the target polyphenol compounds, their composition and antioxidant activity. The solid phase extraction allows an effective increase in the compounds' recoverability from the IL dissolved part, which cannot be re-extracted with "antisolvents", and allows the recovery of ionic liquid, which is a problematic issue in biomass processing with ionic liquids in the world. In addition, the analytical process integrates sustainable development, which reduces the use of toxic and hazardous substances in extraction processes, replacing them with more environmentally friendly ones.
UR - https://www.scopus.com/pages/publications/85086305675
M3 - Conference contribution
AN - SCOPUS:85086305675
T3 - Proceedings of the Nordic Wood Biorefinery Conference
SP - 270
EP - 274
BT - NWBC 2018 - Proceedings of the 8th Nordic Wood Biorefinery Conference
A2 - Hytonen, Eemeli
A2 - Vepsalainen, Jessica
PB - VTT Technical Research Centre of Finland
T2 - 8th Nordic Wood Biorefinery Conference, NWBC 2018
Y2 - 22 October 2018 through 25 October 2018
ER -
