This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Open AccessArticle
Green Extraction of Reed Lignin: The Effect of the Deep Eutectic Solvent Composition on the UV-Shielding and Antioxidant Properties of Lignin
by
Olga Morozova
Olga Morozova 1,
Irina Vasil’eva
Irina Vasil’eva 1,
Galina Shumakovich
Galina Shumakovich 1,
Maria Khlupova
Maria Khlupova 1,
Vyacheslav Chertkov
Vyacheslav Chertkov 2,
Alla Shestakova
Alla Shestakova 3 and
Alexander Yaropolov
Alexander Yaropolov 1,*
1
A. N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Leninsky Ave. 33, 119071 Moscow, Russia
2
Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, 119991 Moscow, Russia
3
State Research Institute of Chemistry and Technology of Organoelement Compounds, Shosse Entuziastov 38, 111123 Moscow, Russia
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2024, 25(15), 8277; https://doi.org/10.3390/ijms25158277 (registering DOI)
Submission received: 24 June 2024
/
Revised: 26 July 2024
/
Accepted: 28 July 2024
/
Published: 29 July 2024
Abstract
Lignin, the second most abundant natural polymer, is a by-product of the biorefinery and pulp and paper industries. This study was undertaken to evaluate the properties and estimate the prospects of using lignin as a by-product of the pretreatment of common reed straw (Phragmites australis) with deep eutectic solvents (DESs) of various compositions: choline chloride/oxalic acid (ChCl/OA), choline chloride/lactic acid (ChCl/LA), and choline chloride/monoethanol amine (ChCl/EA). The lignin samples, hereinafter referred to as Lig-OA, Lig-LA, and Lig-EA, were obtained as by-products after optimizing the conditions of reed straw pretreatment with DESs in order to improve the efficiency of subsequent enzymatic hydrolysis. The lignin was studied using gel penetration chromatography, UV-vis, ATR-FTIR, and 1H and 13C NMR spectroscopy; its antioxidant activity was assessed, and the UV-shielding properties of lignin/polyvinyl alcohol composite films were estimated. The DES composition had a significant impact on the structure and properties of the extracted lignin. The lignin’s ability to scavenge ABTS+• and DPPH• radicals, as well as the efficiency of UV radiation shielding, decreased as follows: Lig-OA > Lig-LA > Lig‑EA. The PVA/Lig-OA and PVA/Lig-LA films with a lignin content of 4% of the weight of PVA block UV radiation in the UVA range by 96% and 87%, respectively, and completely block UV radiation in the UVB range.
Share and Cite
MDPI and ACS Style
Morozova, O.; Vasil’eva, I.; Shumakovich, G.; Khlupova, M.; Chertkov, V.; Shestakova, A.; Yaropolov, A.
Green Extraction of Reed Lignin: The Effect of the Deep Eutectic Solvent Composition on the UV-Shielding and Antioxidant Properties of Lignin. Int. J. Mol. Sci. 2024, 25, 8277.
https://doi.org/10.3390/ijms25158277
AMA Style
Morozova O, Vasil’eva I, Shumakovich G, Khlupova M, Chertkov V, Shestakova A, Yaropolov A.
Green Extraction of Reed Lignin: The Effect of the Deep Eutectic Solvent Composition on the UV-Shielding and Antioxidant Properties of Lignin. International Journal of Molecular Sciences. 2024; 25(15):8277.
https://doi.org/10.3390/ijms25158277
Chicago/Turabian Style
Morozova, Olga, Irina Vasil’eva, Galina Shumakovich, Maria Khlupova, Vyacheslav Chertkov, Alla Shestakova, and Alexander Yaropolov.
2024. "Green Extraction of Reed Lignin: The Effect of the Deep Eutectic Solvent Composition on the UV-Shielding and Antioxidant Properties of Lignin" International Journal of Molecular Sciences 25, no. 15: 8277.
https://doi.org/10.3390/ijms25158277
Note that from the first issue of 2016, this journal uses article numbers instead of page numbers. See further details
here.
Article Metrics
Article Access Statistics
For more information on the journal statistics, click
here.
Multiple requests from the same IP address are counted as one view.