Studies on structural features of two neutral heteropolysaccharides from Cuscuta chinensis / 中草药

ABSTRACT

Object Polysaccharide constituents in the seed of Cuscuta chinensis Lam were investigated Methods Individual constituent was isolated and purified by DEAE cellulose and gel filtration chromatography, and its structural features were further studied by physicochemical constants, and spectral analysis Results Two polysaccharides, named H6 and H8, were obtained from alkalescent or boiling water extract fractions, respectively The molecular mass of H6 was 3 14?10 5 and that of H8 was more than 1 0?10 6 Both structures were found to be complex neutral heteropolysaccharides composed of Ara, Rha, Gal and Xyl Conclusion These polysaccharides were obtained from this plant for the first time