REFINING OF LIGNOCELLULOSE BY ORGANOSOLV PROCESSES .1. ISOLATION, CHARACTERIZATION AND UTILIZATION OF HEMICELLULOSE EXTRACTED FROM NORWAY SPRUCE

被引：10

作者：

BENNANI, A ^{[1
]}

RIGAL, L ^{[1
]}

GASET, A ^{[1
]}

机构：

[1] ECOLE NATL SUPER CHIM TOULOUSE,INST NATL POLYTECH TOULOUSE,CHIM AGRORESSOURCES LAB,F-31077 TOULOUSE,FRANCE

来源：

BIOMASS & BIOENERGY | 1991年 / 1卷 / 05期

关键词：

ORGANOSOLV; HEMICELLULOSE; LIGNIN; GALACTOGLUCOMANNAN; ION EXCHANGER; LIGNIN HEMICELLULOSE COMPLEXES;

D O I：

10.1016/0961-9534(91)90041-A

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Analysis of the extract obtained from treatment of Norway Spruce (Picea abies) with a water-methanol mixture at high temperature (190-degrees-C) indicated hemicelluloses associated with lignin which formed a colloidal suspension when methanol was eliminated. Different analyses (IR, UV, GPC, HPLC, elementary microanalyses, etc...) showed that the hemicelluloses were galactoglucomannan (0.5-1-3) with a DP of 43, and that the lignin was of the guaicyl type. A separation process using strong acid and weak basic ion exchangers led to a lignin yield of 20% and to highly purified hemicelluloses representing 28% of the dry material.

引用

页码：289 / 296

页数：8

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