Food and Fermentation Industries >

2019 , Vol. 45 >Issue 11: 65 - 70

DOI: https://doi.org/10.13995/j.cnki.11-1802/ts.019872

Isolation, purification and antioxidant activities of extracellular polysaccharidesfrom Rhodotorula mucilaginosa

  • MA Wenjin ,
  • LI Meilin ,
  • WANG Bo ,
  • ZHANG Yongxian ,
  • YU Changqing ,
  • BAN Shenghua
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  • (Gansu Institute of Light Industry Limited Liability Company, Lanzhou 730030, China)

Received date: 2019-01-07

  Online published: 2019-07-08

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Abstract

The primary structures and antioxidant activities of Rhodotorula mucilaginosa extracellular polysaccharides were studied in this paper. A single component REPS2-A in extracellular polysaccharides was obtained by isolation and purification, followed by measuring its molecular weight distribution and free radical scavenging activities. The results showed that the molecular weight of REPS2-A was 7.125×106 Da. Moreover, the scavenging rates of DPPH and ABTS free radicals by 8 mg/mL REPS2-A were 49.1% and 51.2%, respectively, and the reducing power was 0.352. This paper provides a new data basis for understanding the structures and functions of extracellular polysaccharides of R. mucilaginosa, which provides an experimental basis for subsequent studies on correlations between their structures and activities.

Key words： Rhodotorula mucilaginosa; extracellular polysaccharide; structure analysis; antioxidant

Cite this article

MA Wenjin , LI Meilin , WANG Bo , ZHANG Yongxian , YU Changqing , BAN Shenghua . Isolation, purification and antioxidant activities of extracellular polysaccharidesfrom Rhodotorula mucilaginosa[J]. Food and Fermentation Industries, 2019 , 45(11) : 65 -70 . DOI: 10.13995/j.cnki.11-1802/ts.019872

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