Physical-chemical properties and structure elucidation of abPS isolated from the root of Achyranthes bidentata / 药学学报

ABSTRACT

<p><b>AIM</b>To study the physicochemical properties and the structure of Achyranthes bidentata polysaccharide (AbPS).</p><p><b>METHODS</b>AbPS was isolated from the roots of Achyranthes bidentata Bl., and purified by gel filtration chromatography. The distribution of the molecular weight of AbPS was determined by ESI-MS. The structure of AbPS was deduced by methylation analysis, reductive-cleavage and 13CNMR spectroscopy.</p><p><b>RESULTS</b>AbPS was shown to compose of fructose residues and glucose residues and the molar ratio was 81. AbPS contain 2,1-linked fructose residue, 2,1-linked fructose residue, 1,2,6-linked fructose residue, terminal fructose residue and terminal glucose residue.</p><p><b>CONCLUSION</b>AbPS is a fructan and belong to graminan.</p>