NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2011, Vol. 23 ›› Issue (1): 76-81.

• Article • Previous Articles     Next Articles

Physicochemical Properties of a Water-soluble Polysaccharide Fraction SHP-3 Purified from Soybean Hull

LAI Fu-rao1, WU Hui1*, LI Xiao-feng1, REN Yao1, WU Lei-yan1,2, WEN Qi-biao1   

  1. 1College of Light Industry and Food Sciences, South China University of Technology, Guangzhou 510640, China; 2College of Food Science and Engineering, Jiangxi Agricultural University, Nanchang 330045, China
  • Received:2009-05-04 Published:2011-07-20
  • Supported by:

    This project was supported by Program for New Century Excellent Talents in University (NCET-06-0746).

Abstract:

The water-soluble polysaccharide of soybean hull (SHP) was extracted by hot water and three fractions were obtained by using DEAE-cellulose anion exchange column. The physicochemical properties of the purified fractions SHP-3, eluted with 0.3 M NaOH, were investigated. Gel permeation chromatography showed that the molecule weight of SHP-3 was 45554. GC analysis of the monosaccharide composition showed that the molar ratio of Rah: Fuc: Ara: Xyl: Man: Gal: Glu was 3.55:0.44:11.58:1:7.45:5.12:1.12 and the content of galacturonic acid was 26.71% (wt.%). The ultraviolet spectra indicated that there was no presence of protein in SHP-3. The molar percentages of (1→2) glycosidic linkage, (1→4) glycosidic linkage and (1→6) glycosidic linkage were 11.4%, 68.9% and 19.7%, respectively.

Key words: soybean hull, water-soluble polysaccharide, purification, monosaccharide composition, GC