STRUCTURAL AND SOLUTION PROPERTIES OF CORN COB HETEROXYLANS

被引：137

作者：

EBRINGEROVA, A ^{[1
]}

HROMADKOVA, Z ^{[1
]}

ALFOLDI, J ^{[1
]}

BERTH, G ^{[1
]}

机构：

[1] CENT INST NUTR, O-1505 POTSDAM, GERMANY

来源：

CARBOHYDRATE POLYMERS | 1992年 / 19卷 / 02期

关键词：

D O I：

10.1016/0144-8617(92)90119-B

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The main structural features of the L-arabino-(4-O-methyl-D-glucurono)-D-xylan (AGX) from com cobs were evaluated by means of methylation analysis and C-13-NMR spectroscopy. The heteroxylan consisted of water-soluble and water-insoluble xylan molecules differing in the amount and proportion of non-regularly distributed side chains. Single alpha-(1 --> 2)-linked 4-O-methyl-D-glucopyranosyl uronic acid units and alpha-(1 --> 3)-linked L-arabinofuranose residues, as well as 2-O-beta-D-xylopyranosyl-alpha-L-arabinofuranose moieties constituted the side chains. GPC analysis of the water-soluble fractions coupled with viscometry and light-scattering was used to characterise the molecular weight distribution (MWD) and to establish the Mark-Houwink relationship. The flow properties of aqueous dispersions of the water-soluble and water-insoluble fractions were discussed in relation to their structural properties.

引用

页码：99 / 105

页数：7

共 33 条

[1] MOLECULAR-SIEVE CHROMATOGRAPHY WITH SEPHAROSE 4B - DETECTION OF ARTEFACTS OF HIGH MOLECULAR WEIGHT IN ACIDIC POLYSACCHARIDES [J].