食品科学 ›› 2016, Vol. 37 ›› Issue (24): 61-67.doi: 10.7506/spkx1002-6630-201624009

• 工艺技术 • 上一篇    下一篇

发菜胞外多糖硫酸化条件的优化及红外光谱分析

郭金英,朱蓓茹,任国艳,吴 影,王 萍,崔国庭,李政军   

  1. 河南科技大学食品与生物工程学院,河南 洛阳 471023
  • 出版日期:2016-12-25 发布日期:2016-12-21
  • 基金资助:
    河南省重点科技攻关计划项目(142102110038);河南科技大学博士科研启动基金项目;河南科技大学大学生研究训练(SRTP)项目(2015068)

Optimization of Sulfation Conditions and Infrared Spectroscopy Analysis of Nostoc flagelliforme Exopolydsaccharide

GUO Jinying, ZHU Beiru, REN Guoyan, WU Ying, WANG Ping, CUI Guoting, LI Zhengjun   

  1. College of Food and Bioengineering, Henan University of Science and Technology, Luoyang 471023, China
  • Online:2016-12-25 Published:2016-12-21

摘要: 液体培养发菜细胞,发菜细胞经去藻体、浓缩、透析、脱蛋白、醇沉、DEAE-52离子交换柱层析分级、Sephadex-100葡聚糖凝胶柱分级处理得到发菜胞外精多糖。以硫酸根的取代度为指标,在单因素试验的基础上,利用Box-Behnken设计进行响应面试验,建立因素与响应值之间的数学模型,确定适宜的发菜胞外多糖硫酸化条件。结果表明,发菜胞外多糖硫酸化修饰最佳条件为反应温度71 ℃、反应时间3 h、氯磺酸-吡啶体积比1∶7,在此条件下,硫酸化取代度为5.05。红外光谱检测表明,硫酸基团已与多糖分子结合。

关键词: 发菜, 多糖, 硫酸化, 红外光谱

Abstract: A purified exopolydsaccharide was obtained from the cell-free culture broth of Nostoc flagelliforme cells by concentration, dialysis, deproteinization, alcohol precipitation and sequential column chromatographies on DEAE-52 cellulose and Sephadex-100. By combined use of one-factor-at-a-time method and Box-Behnken response surface methodology, the optimum sulfation conditions for maximum degree of substitution (DS) of sulfate groups in the polydsaccharide (5.05) were obtained as follows: reaction temperature, 71 ℃; reaction time, 3 h; and chlorosulfonic acid-pyridine ratio, 1:7 (V/V). The infrared spectroscopy analysis showed the binding of sulfuric acid groups to the polysaccharide molecule.

Key words: Nostoc flagelliforme, polysaccharide, sulfation, infrared spectroscopy

中图分类号: