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Pubmed ID :29275205
Publication Date : //

Extraction, partial characterization and bioactivity of polysaccharides from Senecio scandens Buch.-Ham.


Mechanochemistry was applied to improve the yield of bioactive acid polysaccharides obtained from low-cost Senecio scandens Buch.-Ham. The structural characteristics and biological activities of three novel polysaccharides from S. scandens (SP2-1, SP2-2 and SP3-2) were investigated. SP2-1 and SP2-2 with molecular weights of 267.6 and 253.1 kDa, respectively, were composed of -rhamnose, -arabinose, -mannose, -xylose, -glucose and -galactose in various ratios, whereas SP3-2 with molecular weight of 266.6 kDa was composed of -arabinose, -glucose and -galactose. In vitro, SP3-2 presented the strongest DPPH, ABTS and O radicals scavenging activities, as well as Fe reducibility. Immunological tests demonstrated that all polysaccharide fractions stimulated the production of nitric oxide (NO) and immunomodulatory cytokines (IL-1β and TNF-α) without cytotoxicity in macrophages and promoted splenocyte proliferation in different degree. These findings indicated that SP2-1, SP2-2 and SP3-2 have prominent antioxidant activity and potential immune response, which proved the possibility of S. scandens polysaccharides (SSP) applied in the field of functional food or medicine.

Authors : Yu Jingbo , Hu Meiqun , Wang Yingyao , Zhang Qihong , Xu Wenhao , Su Weike ,

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