CHEMICAL CHARACTERIZATION OF DIFFERENT PARTITIONS DURING THE ISOLATION OF CELLULOLYTIC ENZYME LIGNIN FROM ACACIA CONFUSA MERR. HEARTWOOD
Acacia confusa Merr. is the major hardwood plantation in Taiwan. With outstanding bioactivities, its extractives were used as biomedical purposes; however the extractive-free wood residues were treated as waste. To find an efficient way to utilize the whole biomass and also to alleviate the demand of fossil fuels in Taiwan, these residues are considered a major candidate for biofuel application. Hence, it is essential to understand the characteristics of biomass recalcitrance or lignifications of this tree species before any application for biofuel. In this study, cellulolytic enzyme lignin (CEL) from A. confusa Merr. heartwood was isolated and each different partition was examined during the isolation process. Both lignin contents and structures were characterized. In the current procedure, the total lignin content of CEL is 81.4％ and the S/V ratio is 3.0. The purification process seems to partition more S units into dioxane soluble fraction leaving more V unit in residue lignin fraction, causing the S/V rat io of CEL to be higher than that of ball-milled wood (S/V=2.5).
Acacia confusa Merr. cellulolytic enzyme lignin (CEL) lignin content nitrobenzene oxidation
Mao-Ju Chang Shang-Tzen Chang Ting-Feng Yeh
School of Forestry and Resource Conservation, National Taiwan University, Taipei 10617, Taiwan
国际会议
16th International Symposium on Wood,Fiber and Pulping Chemistry(第十六届木材、纤维及制浆化学国际会议)
天津
英文
308-310
2011-06-08（万方平台首次上网日期，不代表论文的发表时间）