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Effect of the Pre-Treatment Severity on the Antioxidant Properties of Ethanol Organosolv Miscanthus x giganteus Lignin
Centre des Matériaux de Grande Diffusion (CMGD), Ecole des Mines d’Alès, France
Laboratoire d’Etude et de Recherche sur le MAteriau Bois, Faculté des Sciences et Techniques, Nancy-Université, Boulevard des Aiguillettes, France.
Laboratoire d’Etude et de Recherche sur le MAteriau Bois, Faculté des Sciences et Techniques, Nancy-Université, Boulevard des Aiguillettes, France
- 1 Centre des Matériaux de Grande Diffusion (CMGD), Ecole des Mines d’Alès, France
- 2 Laboratoire d’Etude et de Recherche sur le MAteriau Bois, Faculté des Sciences et Techniques, Nancy-Université, Boulevard des Aiguillettes, France.
- 3 Laboratoire d’Etude et de Recherche sur le MAteriau Bois, Faculté des Sciences et Techniques, Nancy-Université, Boulevard des Aiguillettes, France
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Abstract
The effect of the severity of an organosolv treatment of Miscanthus x giganteus on antioxidant capacity of the obtained lignin was studied. Four organosolv lignins extracted with different severity conditions were chosen and tested. Results obtained using the methyl linoleate method have shown a correlation between oxygen uptake index and the combined severity. It was found that lignin extracted at higher severity pre-treatment and with a higher phenolic hydroxyl content, lower aliphatic hydroxyl content, molecular weight and polydispersity has the highest antioxidant capacity.
KeywordsMiscanthus x giganteusOrganosolv LigninAntioxidantCombined SeverityMolecular WeightPhenolic and Aliphatic Hydroxyl
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