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
收藏
页码：637 / 643
页数：7
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