Isolation and structural characterization of hemicelluloses from palm of Phoenix dactylifera L.

被引：136

作者：

Bendahou, Abdelkader

Dufresne, Alain

Kaddami, Hamid

Habibi, Youssef

机构：

[1] EFPG, INPG, F-38402 St Martin Dheres, France

[2] Univ Cadi Ayyad, Fac Sci & Tech, Lab Chim Bioorgan & Macromol, Marrakech, Morocco

来源：

CARBOHYDRATE POLYMERS | 2007年 / 68卷 / 03期

关键词：

date palm; Phoenix dactylifera; (1 -> 4)-beta-D-xylan; H-1 and C-13 NMR spectroscopy;

D O I：

10.1016/j.carbpol.2006.10.016

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Hemicellulose-type polysaccharides were isolated from the leaflets and the rachis of palm of Phoenix dactylifera L. by alkaline extraction and fractionated by precipitation. The structural investigations were achieved by sugar analysis and NMR spectroscopy. Three fractions were obtained and purified from leaflets as well as from rachis. From leaflets, the water soluble fractions were assumed to be arabinoglucuronoxylans, with 4-O-alpha-D-glucopyranosyluronic acid groups linked at C-2 and arabifuranosyl at C-3. The water non-soluble fraction from leaflets and all fractions extracted from rachis were assumed to be (1 -> 4)-linked P-D-xylan with a 4-O-methyl-alpha-Dglucopyranosyluronic acid group attached at C-2. The sugar composition and the H-1 and C-13 NMR spectra showed that their chemical structures were very similar, but with different proportions of 4-O-Me-D-GIcA. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：601 / 608

页数：8

共 20 条

[1]

Barreveld WH, 1993, FAO AGR SERVICES B

[2] Isolation and NMR characterisation of a (4-O-methyl-D-glucurono)-D-xylan from sugar beet pulp [J].