食品科学 ›› 2005, Vol. 26 ›› Issue (11): 47-50.

• 基础研究 • 上一篇    下一篇

生物活性纤维素硫酸酯的超滤分级研究

 陈振聪, 王兆梅, 李琳, 肖凯军, 林翔   

  1. 华南理工大学轻工与食品学院
  • 出版日期:2005-11-15 发布日期:2011-10-01

Study on Fractionation by Ultrafiltration of Cellulose Sulfate with Biological Activity

 CHEN  Zhen-Cong, WANG  Zhao-Mei, LI  Lin, XIAO  Kai-Jun, LIN  Xiang   

  1. College of Light Industry and Food, South China University of Technology
  • Online:2005-11-15 Published:2011-10-01

摘要: 纤维素硫酸酯(CS)是一种硫酸酯化多糖衍生物,具有抗凝血等多种生物活性。分子量是影响CS生物活性和生物利用度的关键。分别采用截留分子量为10K和4K的膜对CS混合组分进行超滤分级,并分析各级分的结构。结果表明,经过两级超滤,获得“10K以上”、“4~10K”和“4K以下”3个级分,各级分的质量百分比分别为55.9%、16.7%和18.5%;各级分的比旋光度和含硫量依次减少;“10K以上”级分具有旋光性;“4K以下”级分不能使天青A产生异染现象,其红外谱图也不同于其余级分。

关键词: 纤维素硫酸酯, 超滤, 分级, 生物活性

Abstract: Cellulose Sulfate (CS) is a sulfated polysaccharide derivative, which shows a variety of biological activities such as anticoagulation etc.The molecular weight is the key factor to affect the biological activitiesa ndb iological utilizationo fC S.Hence ultra-filtration membranes with the cut-off molecular weight of 10K and 4K were adopted respectively for the fractionation of the CS mixed component. The structure of each fraction was investigated. Results indicated that three fractions i.e.“ above 10K”,“ between 4K and 10K”, and“ below 4K” were obtained respectively after two ultra-filtration procedures. The weight percentage of the above fractions in the mixed components was 55.9%, 16.7% and 18.5% respectively. The intrinsic viscosity and the sulfur content of the fractions decreased according to the order of“ above 10K”,“ between 4K and 10K”, and“ below 4K”. The“ above 10K” fraction exhibited optical rotation property. The“ below 4K”raction showed no metachromasia on azure A and its IR spectrum was different from that of the rest fractions.

Key words: cellulose sulfate, ultrafiltration, fractionation, biological activity