- Tytuł:
- Oxidative polymerization of lignins by laccase in water-acetone mixture
- Autorzy:
-
Fiţigău, Ionița
Peter, Francisc
Boeriu, Carmen - Powiązania:
- https://bibliotekanauki.pl/articles/1039496.pdf
- Data publikacji:
- 2013
- Wydawca:
- Polskie Towarzystwo Biochemiczne
- Tematy:
-
lignin
organic solvent
laccase
enzymatic polymerization - Opis:
- The enzymatic oxidative polymerization of five technical lignins with different molecular properties, i.e. Soda Grass/Wheat straw Lignin, Organosolv Hardwood Lignin, Soda Wheat straw Lignin, Alkali pretreated Wheat straw Lignin, and Kraft Softwood was studied. All lignins were previously fractionated by acetone/water 50:50 (v/v) and the laccase-catalyzed polymerization of the low molecular weight fractions (Mw < 4000 g/mol) was carried out in the same solvent system. Reactivity of lignin substrates in laccase-catalyzed reactions was determined by monitoring the oxygen consumption. The oxidation reactions in 50% acetone in water mixture proceed with high rate for all tested lignins. Polymerization products were analyzed by size exclusion chromatography, FT-IR, and 31P-NMR and evidence of important lignin modifications after incubation with laccase. Lignin polymers with higher molecular weight (Mw up to 17500 g/mol) were obtained. The obtained polymers have potential for applications in bioplastics, adhesives and as polymeric dispersants.
- Źródło:
-
Acta Biochimica Polonica; 2013, 60, 4; 817-822
0001-527X - Pojawia się w:
- Acta Biochimica Polonica
- Dostawca treści:
- Biblioteka Nauki
Artykuł