TY - JOUR AB - In the present study, a steam explosion wood pre-treatment process, optimized earlier with respect to ethanol production, has been applied to both softwoods (Picea abies and Pinus sylvestris) and hardwoods (Betula verrucosa and Populus tremula). The alkaline extractable lignins have then been isolated to investigate lignin separation efficiency and lignin structure and to evaluate their potential for producing value-added products, such as biodiesel components or chemicals, in terms of the purity, molecular size, functional groups, beta-O-4' inter-unit linkage content, and degradability in a subsequent processing treatment. The mechanism of lignin modification and possible improvements to the steam explosion pre-treatment process are discussed. (C) 2008 Elsevier Ltd. All rights reserved. AD - Royal Inst Technol, Dept Fibre & Polymer Technol, SE-10044 Stockholm, Sweden AN - WOS:000264041200015 AU - Li, J. B. AU - Gellerstedt, G. AU - Toven, K. DA - May DO - 10.1016/j.biortech.2008.12.004 IS - 9 J2 - Bioresource Technol KW - lignin LA - English N1 - 416yk PY - 2009 SN - 0960-8524 SP - 2556-2561 ST - Steam explosion lignins; their extraction, structure and potential as feedstock for biodiesel and chemicals T2 - Bioresource Technology TI - Steam explosion lignins; their extraction, structure and potential as feedstock for biodiesel and chemicals UR - ://WOS:000264041200015 VL - 100 ID - 4896 ER -