Hot-water extraction and characterization of spruce bark non-cellulosic polysaccharides

被引：39

作者：

Le Normand, Myriam ^{[1
]}

Edlund, Ulrica ^{[2
]}

Holmbom, Bjarne ^{[3
]}

Ek, Monica ^{[1
]}

机构：

[1] KTH, Royal Inst Technol, Dept Fiber & Polymer Technol, Div Wood Chem & Pulp Technol, SE-10044 Stockholm, Sweden

[2] KTH, Royal Inst Technol, Dept Fiber & Polymer Technol, Div Polymer Technol, SE-10044 Stockholm, Sweden

[3] Abo Akad Univ, Lab Wood & Paper Chem, Proc Chem Ctr, FI-20500 Turku, Finland

来源：

NORDIC PULP & PAPER RESEARCH JOURNAL | 2012年 / 27卷 / 01期

关键词：

Bark; Biorefinery; Hemicelluloses; Norway spruce; Pectins; NORWAY SPRUCE; PICEA-ABIES; WOOD; GALACTOGLUCOMANNAN; ELEMENTS; FILMS;

D O I：

10.3183/npprj-2012-27-01-p018-023

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Non-cellulosic polysaccharides (NCP) from bark offer large potential as a class of natural raw materials for functional materials development and production of biochemicals. We have elaborated a process for sequential extraction of NCP from industrial Norway spruce bark using an accelerated solvent extraction (ASE) with water at 100 to 160 degrees C. Carbohydrates, Klason lignin and ash content as well as size-exclusion chromatography (SEC) analyses were performed for all hot-water extracts. NCP were mainly composed of glucose, arabinose and galacturonic acid units which revealed the presence of starch, arabinose-rich hemicelluloses and pectins. In total, the industrial bark of Norway spruce contained up to 20% of NCP which were extracted with pressurized hot water. NCP were mainly extractable at 140 degrees C and started to undergo degradation at higher temperature.

引用

页码：18 / 23

页数：6

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