title: Amphipathic lignin derivatives to accelerate simultaneous saccharification and fermentation of unbleached softwood pulp for bioethanol production.
abstract: Amphipathic lignin derivatives (A-LDs) were already demonstrated to improve enzymatic saccharification of lignocellulose. Based on this knowledge, two kinds of A-LDs prepared from black liquor of soda pulping of Japanese cedar were applied to a fed-batch simultaneous saccharification and fermentation (SSF) process for unbleached soda pulp of Japanese cedar to produce bioethanol. Both lignin derivatives slightly accelerated yeast fermentation of glucose but not inhibited it. In addition, ethanol yields based on the theoretical maximum ethanol production in the fed-batch SSF process was increased from 49% without A-LDs to 64% in the presence of A-LDs.
authors.affiliation: Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan.
authors.forename: Ningning
authors.initials: N
authors.lastname: Cheng
authors.affiliation: Graduate School of Agriculture, Hokkaido University, Sapporo 060-8589, Japan.
authors.forename: Yoko
authors.initials: Y
authors.lastname: Yamamoto
authors.affiliation: Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Koda
authors.affiliation: Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Tamai
authors.affiliation: Research Faculty of Agriculture, Hokkaido University, Sapporo 060-8589, Japan.
authors.forename: Yasumitsu
authors.initials: Y
authors.lastname: Uraki
mesh_terms: D001673:Biodegradation, Environmental; D019149:Bioreactors / Q000382:microbiology*; D050260:Carbohydrate Metabolism / Q000502:physiology; D002480:Cellulase / Q000737:chemistry; D000431:Ethanol / Q000302:isolation & purification / Q000378:metabolism*; D057927:Hydrophobic and Hydrophilic Interactions; D008031:Lignin / Q000737:chemistry*; D012037:Refuse Disposal / Q000379:methods*; D012441:Saccharomyces cerevisiae / Q000378:metabolism*; D014934:Wood / Q000737:chemistry* / Q000382:microbiology*
chemical_list: D000431:Ethanol; D008031:Lignin; D002480:Cellulase
keywords: Amphipathic lignin derivatives; Bioethanol; Cedar pulp; Enzymatic saccharification; Fed-batch simultaneous saccharification and fermentation (SSF)