title: Composition and antioxidant activity of the polysaccharides from cultivated Saussurea involucrata.
abstract: Polysaccharides from cultivated Saussurea involucrata (CSIP) were purified, two major fractions (CSIP1-2 and CSIP2-3) were investigated for their molecular weights, monosaccharide compositions and in vitro antioxidant activities. The results suggested that the molecular weights of CSIP1-2 and CSIP2-3 were approximately 163.5 kDa and 88.6 kDa, respectively. CSIP1-2 was composed of glucose, galactose, xylose, rhamnose, arabinose and galacturonic acid with a molar ratio of 1.651:0.39:0.062:8.331:1.759:40.426. CSIP2-3 was composed of glucose, galactose, xylose, rhamnose, arabinose and galacturonic acid with a molar ratio of 0.762:0.657:0.112:5.587:0.318:44.655. Different scavenging activities on superoxide radical, DPPH radical and hydroxyl radical were observed in CSIP1-2 and CSIP2-3 at tested concentrations.
authors: National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, 100190 Beijing, PR China.
authors: Lingyun
authors: L
authors: Yao
authors: Qingsheng
authors: Q
authors: Zhao
authors: Jie
authors: J
authors: Xiao
authors: Jian
authors: J
authors: Sun
authors: Xiaofan
authors: X
authors: Yuan
authors: Bing
authors: B
authors: Zhao
authors: Huiming
authors: H
authors: Su
authors: Shengming
authors: S
authors: Niu
mesh_terms: D016166:Free Radical Scavengers / Q000737:chemistry* / Q000302:isolation & purification*; D005609:Free Radicals / Q000737:chemistry; D008970:Molecular Weight; D011134:Polysaccharides / Q000737:chemistry* / Q000302:isolation & purification*; D030441:Saussurea / Q000737:chemistry* / Q000254:growth & development*
chemical_list: D016166:Free Radical Scavengers; D005609:Free Radicals; D011134:Polysaccharides