6533b853fe1ef96bd12ad4a8
RESEARCH PRODUCT
Role of paramagnetic polyconjugated clusters in lignin antioxidant activity(in vitro)
Jevgenija PonomarenkoJ KrasilnikovaGaļina DobeleTatiana DizhbiteGalina TelyshevaNina Mironova-ulmaneM. LaubertsAnna Andersonesubject
AntioxidantDPPHmedicine.medical_treatmentfungitechnology industry and agriculturefood and beveragesBiological activitymacromolecular substancescomplex mixtureslaw.inventionchemistry.chemical_compoundchemistrylawmedicineHardwoodLigninOrganic chemistryComposition (visual arts)Electron paramagnetic resonanceMacromoleculedescription
Using physico-chemical methods (EPR, SEC, Py-GC/MS and UV/VIS spectroscopy) and wet chemical analysis, the characteristics of 6 hardwood lignins in terms of functionality, molecular weight and composition of lignin substructures were determined and considered together with the results of DPPH•, ABTS•+ and O2•− antioxidant assays with the aim to understand the relationships governing antioxidant properties of lignin. The strong positive linear correlation between lignin antioxidant capacity in the three assays used and the extent of conjugation of paramagnetic polyconjugated clusters in lignin macromolecules was found. The biological activity of the most active alkaline lignins was assessed by in vitro experiment with human blood.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-08-20 | IOP Conference Series: Materials Science and Engineering |