化学学报 ›› 1998, Vol. 56 ›› Issue (4): 398-404. 上一篇    下一篇

研究论文

大豆戊聚糖的化学结构及对面团流变学特性的影响

郑建仙   

  1. 华南理工大学食品与生物工程学院
  • 发布日期:1998-04-15

Studies on the chemistry structure of soybean pentosan and its effect on the dough rheological properties

ZHENG JIANXIAN   

  • Published:1998-04-15

用1molk/L NaOH提取并经层析柱的分级与提纯, 从大豆细胞壁物质中提取出的戊聚糖纯组分(PRF5-1, PRF5-2)属于多糖-多肽复合物。由β(1→4)-糖苷键连的木聚糖构成多糖部分的主链结构, 主链上部分Xyl残基分别通过3-C与2-C分支点连有Ara和GlcA作为侧链。大戊聚糖对面团流变学特性(粉质特性与拉伸特性)有明显的改良作用, 是一种潜在的面粉品质改良剂。

关键词: 大豆, 流变性能, 戊聚糖

Pure soybean pentosan fractions (PRF5-1 and PRF5-2) were obtained from soybean cell wall material, by extraction with 1mol/L NaOH and further purification by chromatography, both of which were complexpolysaccharide-polypeptide. The backbone structure were β(1→4) linked xylan, which was branched at position 3-C and 2-C with arabinose and glucuronic acid residues respectively. Soybean pentosan was found to have significant improvement on dough rheological properties (farinograph and extensograph properties), and has the potential as a flour improver.

Key words: GLYCINE MAX, RHEOLOGICAL PROPERTY, PENTOSAN

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