Isolation and physicochemical characterisation of xylose-rich pectic polysaccharide from wheat straw

被引：4

作者：

Sun, RC

Lawther, JM

Banks, WB

机构：

[1] The BioComposites Centre University of Wales Bangor

[2] School of Agricultural, Forest Sciences University of Wales Bangor

来源：

PECTINS AND PECTINASES | 1996年 / 14卷

关键词：

xylose-rich pectic polysaccharide; pectin; wheat straw; extraction; sugars; lignin; FT-IR; phenolic acids and aldehydes;

D O I：

10.1016/S0921-0423(96)80297-8

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Xylose-rich pectic polysaccharide (XRPP) was extracted from defatted and protein-free wheat straw with a solution adjusted to pH 1.6 using hydrochloric acid (HCl). The yield of XRPP obtained was 1.1% of the dried wheat straw. The isolated XRPP contained 44.8% galacturonic acid released by pectolyase treatment and 32.1% released by 2 N trifluoroacetic acid hydrolysis. The XRPP also contained 17.1 % neutral sugars released by pectinase reaction and 28.4% released by the acid hydrolysis. A comparison of the FT-IR spectroscopic data of citrus pectin and XRPP showed that the extracted XRPP belongs to pectic substances and differs from hemicellulose with an intensive absorption band at 1740 cm(-1).

引用

页码：637 / 643

页数：7

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