食品科学 ›› 2011, Vol. 32 ›› Issue (21): 29-33.doi: 10.7506/spkx1002-6630-201121007

• 基础研究 • 上一篇    下一篇

平贝母多糖的分离纯化及抗氧化活性研究

刘春红1,马 宇2,何忠梅3,韩宝瑞2,*   

  1. 1.长春大学特殊教育学院 2.吉林农业大学发展学院 3.吉林农业大学中药材学院
  • 出版日期:2011-11-15 发布日期:2011-11-11
  • 基金资助:
    吉林省教育厅“十二五”科学技术研究项目(吉教科合字2011 第210 号)

Partial Characterization and Antioxidant Activity of Water-soluble Polysaccharide Isolated from Bulbus Fritillariae ussuriensis

LIU Chun-hong1,MA Yu2, HE Zhong-mei3, HAN Bao-rui2,*   

  1. (1. Special Education College, Changchun University, Changchun 130022, China; 2. Development College, Jilin Agricultural University, Changchun 130600, China; 3. College of Chinese Medicine Materials, Jilin Agricultural University, Changchun 130116, China)
  • Online:2011-11-15 Published:2011-11-11

摘要: 采用乙醇沉淀、DEAE-纤维素离子交换层析和Sepharose CL-6B凝胶过滤层析法,从平贝母(Fritillaria ussuriensis Maxim)水提取液中分离纯化得到水溶性多糖,命名为FUP-1。通过红外光谱和高效液相色谱对其结构和单糖组成进行初步分析,分子筛层析法测定其分子质量。结果表明,FUP-1为均一组分的杂多糖,主要由木糖、葡萄糖和半乳糖组成,其物质的量比为5:1:1,平均分子质量为4.1×104D。体外抗氧化活性分析表明,FUP-1具有较强的清除羟自由基、超氧阴离子自由基和DPPH自由基的能力。

关键词: 平贝母, 多糖, 单糖组成, 抗氧化

Abstract: A water-soluble polysaccharide was isolated from Bulbus Fritillariae ussuriensis (dried bulbs of Fritillaria ussuriensis Maxim) sequentially through water extraction, ethanol precipitation, ion exchange chromatography and gel permeation chromatography. The molecular mass of FUP-1 was determined by gel filtration chromatography, and its structure was characterized by HPLC and FTIR spectroscopy. The results showed that FUP-1 was a heteropolysaccharide, of which the monosaccharide composition was composed of xylose, glucose and galactose with a molar ratio of 5:1:1. The average molecular weight of FUP-1 was determined to be 4.1 × 104 D. Bioactivity tests in vitro showed that FUP-1 displayed strong antioxidant effect and scavenging capacity against hydroxyl, DPPH, and superoxide anion free radicals. Therefore, FUP-1 may be a potent antioxidant agent.

Key words: Fritillaria ussuriensis, polysaccharide, monosaccharide composition, antioxidant activity

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