title: Selenylation modification can enhance antioxidant activity of Potentilla anserina L. polysaccharide.
abstract: Potentilla anserina L. polysaccharide had been selenizingly modified by nitric acid-selenious acid method with microwave-assistant. The optimal reaction parameters on selenylation modification were time 116 min, temperature 63°C, microwave power 190 W and the actual value of selenium content was 2690.1±7.2 μg/g. The scavenging ability of DPPH, OH and superoxide radicals, the metal chelating ability and reducing power in vitro were compared by antioxidant assay taking the non-modified PAP as a control. The results showed that selenylation modification could significantly enhance the antioxidant activity of SePAP and SePAP could be used as a potential antioxidant.
authors.affiliation: Bioactive Products Engineering Research Center for Gansu Distinctive Plants, Northwest Normal University, Lanzhou 730070, China.
authors.forename: Baotang
authors.initials: B
authors.lastname: Zhao
authors.forename: Ji
authors.initials: J
authors.lastname: Zhang
authors.forename: Jian
authors.initials: J
authors.lastname: Yao
authors.forename: Shen
authors.initials: S
authors.lastname: Song
authors.forename: Zhenxiong
authors.initials: Z
authors.lastname: Yin
authors.forename: Qingya
authors.initials: Q
authors.lastname: Gao
mesh_terms: D001713:Biphenyl Compounds / Q000737:chemistry; D016166:Free Radical Scavengers / Q000138:chemical synthesis / Q000737:chemistry*; D008872:Microwaves; D008956:Models, Chemical; D009589:Nitrogen Oxides / Q000737:chemistry; D016566:Organoselenium Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010851:Picrates / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry*; D011134:Polysaccharides / Q000138:chemical synthesis / Q000737:chemistry*; D031987:Potentilla / Q000737:chemistry*
chemical_list: D001713:Biphenyl Compounds; D016166:Free Radical Scavengers; D009589:Nitrogen Oxides; D016566:Organoselenium Compounds; D010851:Picrates; D010936:Plant Extracts; D011134:Polysaccharides; C031701:nitrogen trioxide; C004931:1,1-diphenyl-2-picrylhydrazyl