Comparative Analysis of Milled Wood Lignins (MWLs) Isolated from Sugar Maple (SM) and Hot-Water Extracted Sugar Maple (ESM)

Mangesh J. Goundalkar, Derek B. Corbett and Biljana M. Bujanovic
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Mangesh J. Goundalkar: Department of Paper and Bioprocess Engineering, State University of New York College of Environmental Science and Forestry (SUNY-ESF), Syracuse, NY 13210, USA
Derek B. Corbett: Department of Paper and Bioprocess Engineering, State University of New York College of Environmental Science and Forestry (SUNY-ESF), Syracuse, NY 13210, USA
Biljana M. Bujanovic: Department of Paper and Bioprocess Engineering, State University of New York College of Environmental Science and Forestry (SUNY-ESF), Syracuse, NY 13210, USA

Energies, 2014, vol. 7, issue 3, 1-13

Abstract: To further elucidate the advantageous effects of hot-water extraction (HWE) on delignification, milled wood lignin (MWL) was isolated from sugar maple (SM) and from hot-water extracted sugar maple (ESM). Ball-milled wood was analyzed for particle size distribution (PSD) before and after dioxane:water (DW) extraction. The MWL samples were analyzed by analytical and spectral methods. The results indicated that the MWL isolated from SM and ESM was mainly released from the middle lamella (ML) and the secondary wall (SW), respectively. The cleavage of dibenzodioxocin (DB) and spirodienone (SD) lignin substructures during HWE is suggested. The removal of lignin during acetone:water (AW) extraction of hot-water extracted wood indicates that including an additional operation in a hardwood HWE-based biorefinery would be beneficial for processing of wood.

Keywords: sugar maple (SM); hot-water extraction (HWE); milled wood lignin (MWL); heteronuclear single quantum coherence spectroscopy (HSQC) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2014
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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