生物技术通报 ›› 2019, Vol. 35 ›› Issue (10): 89-94.doi: 10.13560/j.cnki.biotech.bull.1985.2019-0323

• 研究报告 • 上一篇    下一篇

烟叶多糖硒化衍生物制备及其体外抗氧化活性研究

张昊1, 魏跃伟1, 姬小明1, 潘婷婷2, 王慧1   

  1. 1. 河南农业大学烟草学院,郑州 450002;
    2. 湖北中烟工业有限责任公司,武汉 430030
  • 收稿日期:2019-04-16 出版日期:2019-10-26 发布日期:2019-09-30
  • 作者简介:张昊,男,硕士研究生,研究方向:烟草化学、香精香料;E-mail:778008020@qq.com
  • 基金资助:
    国家重点研发计划课题项目(2017YFD0200808),湖北中烟工业有限责任公司项目(2018420000340440)

Preparation of Selenized Derivatives from Tobacco Leaf Polysaccharides and Its Antioxidant Activity in Vitro

ZHANG Hao1, WEI Yue-wei1, JI Xiao-ming1, PAN Ting-ting2, WANG Hui1   

  1. 1. College of Tobacco Science,Henan Agricultural University,Zhengzhou 450002;
    2. Hubei tobacco industry limited liability company. Wuhan 430030
  • Received:2019-04-16 Published:2019-10-26 Online:2019-09-30

摘要: 以烤后烟叶为原料,通过超声辅助提取烟叶粗多糖,经过纯化得到精制多糖,并对精制多糖进行硒化衍生。采用红外光谱对衍生物进行了结构表征,测其硒化取代度;并对烟叶多糖和烟叶多糖硒化衍生物进行体外抗氧化实验。结果表明:采用0.30 mol/L、0.40 mol/L NaCl溶液对多糖进行洗脱时,分离出两种烟叶多糖TPP1、TPP2,两种多糖的硒化取代度分别为0.20,0.24,体外抗氧化实验表明,硒化烟叶多糖的抗氧化活性明显高于烟叶多糖,并且随取代度增大,·DPPH、·OH自由基清除率明显增加。

关键词: 烟叶, 多糖提取, 硒化衍生物, 抗氧化

Abstract: Using flue-cured tobacco leaves as raw material,the crude polysaccharide was extracted by ultrasound-assisted and refined polysaccharides were purified and selenization of them was done for derivatives. The derivatives were characterized by infrared spectroscopy and their degrees of selenization substitution were measured. On the basis of this,the antioxidative activity of tobacco leaf polysaccharide and selenized tobacco leaf polysaccharide were studied in vitro. The results showed that tobacco leaf polysaccharide TPP1 and TPP2 were isolated when the polysaccharide was eluted with 0.30 mol/L and 0.40 mol/L NaCl solution,respectively. The selenization substitution degree of the two polysaccharides was 0.20 and 0.24,respectively. The antioxidant activity of selenized tobacco leaf polysaccharides was significantly greater than that of tobacco leaf polysaccharides in vitro antioxidant experiments,and the greater the degree of substitution was,the more obviously the ·DPPH and ·OH radical scavenging rate increased.

Key words: tobacco leaf, polysaccharide extraction, selenium derivatization, anti-oxidation