Food Science and Biotechnology

, Volume 26, Issue 1, pp 55–62 | Cite as

Comparison of structural features and antioxidant activity of polysaccharides from natural and cultured Cordyceps sinensis

  • Junqiao Wang
  • Shaoping Nie
  • Lijiao Kan
  • Haihong Chen
  • Steve W. Cui
  • Aled O. Phillips
  • Glyn O. Phillips
  • Mingyong Xie
Article

Abstract

Four polysaccharides (named as P1, P2, and P3 from three natural Cordyceps sinensis and P4 from cultured C. sinensis) were obtained by hot-water extraction and ethanol precipitation and their structural characteristics as well as antioxidant potentials were compared. Results revealed that the backbone of P1, P2, and P3 comprised α-1,4-glucose, with a branching point mainly at position 6 and terminating at glucose. On the other hand, the structure of P4 was highly complex, mainly comprising glucose, galactose, and mannose, with 1,4-glucose and 1,4-galactose as the main chain. For in vitro antioxidant assays, all the four polysaccharides showed similar scavenging capacity against DPPH and hydroxyl radicals, whereas P1 had a relatively low ferric reducing ability, possibly related to a combination of factors such as the phenolic compounds and amino acids that conjugated in polysaccharides.

Keywords

natural/cultured Cordyceps sinensis polysaccharide structure antioxidant 

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Copyright information

© The Korean Society of Food Science and Technology and Springer Science+Business Media Dordrecht 2017

Authors and Affiliations

  • Junqiao Wang
    • 1
  • Shaoping Nie
    • 1
  • Lijiao Kan
    • 1
  • Haihong Chen
    • 1
  • Steve W. Cui
    • 1
    • 2
  • Aled O. Phillips
    • 3
  • Glyn O. Phillips
    • 4
  • Mingyong Xie
    • 1
  1. 1.State Key Laboratory of Food Science and TechnologyNanchang UniversityNanchang, Jiangxi ProvinceChina
  2. 2.Agriculture and Agri-Food CanadaGuelph Food Research CentreGuelphCanada
  3. 3.School of MedicineUniversity of CardiffWalesUK
  4. 4.Phillips Hydrocolloids Research CentreGlyndwr UniversityWrexhamUK

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