食品科学 ›› 2010, Vol. 31 ›› Issue (9): 131-134.doi: 10.7506/spkx1002-6630-201009031

• 生物工程 • 上一篇    下一篇

植物乳杆菌C21胞外多糖的分离纯化及其结构修饰

李盛钰,曾宪鹏,赵玉娟,张 雪,张 健,杨贞耐*   

  1. 吉林省农业科学院农产品加工研究中心
  • 收稿日期:2009-08-12 修回日期:2010-01-18 出版日期:2010-05-01 发布日期:2010-12-29
  • 通讯作者: 杨贞耐 E-mail:zyang@cjaas.com
  • 基金资助:

    国家自然科学基金项目(30670057)

Isolation, Purification and Structural Modification of Exopolysaccharide from Lactobacillus plantarum C21

LI Sheng-yu,ZENG Xian-peng,ZHAO Yu-juan,ZHANG Xue,ZHANG Jian,YANG Zhen-nai*   

  1. Center of Agro-Food Technology, Jilin Academy of Agricultural Sciences, Changchun 130033, China
  • Received:2009-08-12 Revised:2010-01-18 Online:2010-05-01 Published:2010-12-29

摘要:

为研究乳酸菌胞外多糖的结构和性质,采用乙醇沉淀、DEAE- 纤维素离子交换柱层析和 Sepharose CL-6B凝胶过滤层析方法从植物乳杆菌(Lactobacillus plantarum) C21 SDM 液体培养基中分离纯化得到一种均一组分的胞外多糖,命名为PCPc。采用离子色谱和红外光谱法对其单糖组成和结构进行初步分析,结果表明,PCPc 主要由半乳糖和葡萄糖两种单糖组成,其物质的量比为1:2。并对PCPc 多糖进行化学修饰,获得了其硫酸化和磷酸化衍生物。

关键词: 乳酸菌, 植物乳杆菌, 胞外多糖

Abstract:

In order to investigate the structure and properties of exopolysaccharide produced by Lactobacillus plantarum C21, a neutral exopolysaccharide was isolated from culture supernatant and purified by ethanol precipitation, DEAE-cellulose ion exchange column chromatography and gel filtration chromatography on Sepharose CL-6B column. The structure of this exopolysaccharide was determined by ion chromatography and FTIR spectroscopy and this exopolysaccharide was designated as PCPc. Results indicated that the PCPc was composed of D-galactose and D-glucose in a molar ratio of 1:2. Sulfated and phosphorylated derivatives of PCPc were also prepared.

Key words: lactic acid bacteria, Lactobacillus plantarum, exopolysaccharide

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