食品科学 ›› 2009, Vol. 30 ›› Issue (3): 25-28.doi: 10.7506/spkx1002-6630-200903003

• 基础研究 • 上一篇    下一篇

具有抗氧化活性茶多糖TPS- Ⅱ的分离纯化及其性质研究

潘 见1,陈 彦1,2,*,方 伟2,孙玉军3   

  1. 1.合肥工业大学 农产品生物化工教育部工程研究中心 2.安徽大学生命科学学院 3.安徽科技学院生命科学学院
  • 收稿日期:2008-03-04 修回日期:2008-08-04 出版日期:2009-02-01 发布日期:2010-12-29
  • 通讯作者: 陈彦 E-mail:chenyan600@163.com;jcsw@ahu.edu.cn
  • 基金资助:

    安徽省自然科学基金项目(070413143)

Study on Purification and Chemical Compositions of Tea Polysaccharide (TPS-Ⅱ)with Antioxidant Activity

PAN Jian1,CHEN Yan1,2,*,FANG Wei2,SUN Yu-jun3   

  1. (1.Engineering Research Center of Bio-process, Ministry of Education, Hefei University of Technology, Hefei 230009, China ;
    2.School of Life Science, Anhui University, Hefei 230039, China ;
    3.School of Life Science, Anhui Science and Technology University, Fengyang 233100, China)
  • Received:2008-03-04 Revised:2008-08-04 Online:2009-02-01 Published:2010-12-29
  • Contact: CHEN Yan1,2,*, E-mail:chenyan600@163.com;jcsw@ahu.edu.cn

摘要:

从六安炒青绿茶水提物中分离纯化得到具有抗氧化作用的茶多糖组分TPS-II,经电泳和FPLC 方法检测TPS-II 为均一组分;其总糖85.3%、糖醛酸28.0%、蛋白2.8%,分子量为1.01 × 105D;气相色谱法分析得知其单糖组成为L- 鼠李糖、L- 岩藻糖、L- 阿拉伯糖、D- 木糖、D- 甘露糖、D- 葡萄糖、D- 半乳糖,摩尔比为2.98:1.58:4.27:1.00:1.82:2.25:6.98;红外光谱分析显示TPS-II 呈现多糖吸收特征峰,β- 消去反应推断TPS-II 中多糖与蛋白的连接为非O- 型糖肽键。

关键词: 炒青绿茶, 茶多糖, 纯化, 单糖组成, 红外光谱

Abstract:

The tea polysaccharids (TPS)-Ⅱ with antioxidant activity was isolated from the water extract of Liu'an roasted green tea by chromatography. The compositions of TPS-II were identified by electrophoresis and FPLC (fast protein liquid chromatography). The molecular weight of TPS-Ⅱ is 1.01×105 D, and its contents of total saccharide, uronic acid and protein are 85.3%, 28.0% and 2.8% respectively. GC analysis showed that TPS- Ⅱ is composed of L-Rha, L-Fuc, L-Ara, D-Xyl, DMan, D-Glc and D-Gal in molar ratio of 2.98:1.58:4.27:1.00:1.82:2.25:6.98. The IR spectrum of TPS-Ⅱ also presents the peak of polysaccharide absorption characteristics. Furthermore, β-elimination reaction demonstrated that the polysaccharide in TPS- Ⅱ is linked to peptide chains via non-O-glycosidic linkage.

Key words: roasted green tea, tea polysaccharide, purification, monosaccharide composition, infrared spectrum

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