欢迎访问《林产化学与工业》,

林产化学与工业 ›› 2003, Vol. 23 ›› Issue (3): 23-27.

• 研究报告 • 上一篇    下一篇

两种硫酸酯化纤维素钠的结构和抗凝血活性研究

王兆梅, 李琳, 胡松青, 冯宗财, 郭祀远   

  1. 华南理工大学 食品与生物工程学院, 广东 广州 510640
  • 收稿日期:2002-11-18 修回日期:1900-01-01 出版日期:2003-09-30 发布日期:2003-09-30

STUDY ON STRUCTURE AND BLOOD-ANTICOAGULATING ACTIVITY OF TWO SODIUM CELLULOSE SULFATES

WANG Zhao-mei, LI Lin, HU Song-qing, FENG Zong-cai, GUO Si-yuan   

  1. College of Food and Bioengineering, South China University of Technology, Guangzhou 510640, China
  • Received:2002-11-18 Revised:1900-01-01 Online:2003-09-30 Published:2003-09-30

摘要: 硫酸微晶纤维素钠(Na-MCS)和硫酸三醋酸纤维素钠盐(Na-CAS)分别是以微晶纤维素和三醋酸纤维素为原料、ClSO3-DMF硫酸化方法制备的两种硫酸酯化纤维素钠,对其分别进行了结构和抗凝血活性的研究。红外光谱分析发现,两种硫酸酯化纤维素钠均存在硫酸酯键,元素分析测得其硫酸取代度分别为1.70和0.83,13CNMR进一步揭示了Na-MCS中硫酸酯基的分布为C_6位完全取代和C_2位部分取代,Na-CAS中硫酸酯基的取代仅发生在C_6位。抗凝血活性研究表明,添加Na-MCS和Na-CAS均能延长全血复钙时间、活化部分凝血活酶时间和凝血酶时间,但Na-CAS的抗凝血活性远低于Na-MCS。将抗凝血活性突出的Na MCS与肝素钠相比,其抗凝血活性更强。

关键词: 微晶纤维素, 三醋酸纤维素, 硫酸酯化, 抗凝剂

Abstract: The structure and blood anticoagulating activity of two sodium cellulose sulfates, i.e. Na-MCS and Na-CAS were studied.Na-MCS and Na-CAS were derived from microcrystalline cellulose(MC) and cellulose tri acetate(CTA) respectively by sulfation with ClSO3H-DMF.Structural measurement by IR spectra disclosed the presence of sulfate bond in both Na-MCS and Na CAS.Elemental analysis revealed that the substitution degree of Na-MCS and Na-CAS were 1.70 and 0.83 respectively.Further measurement of 13CNMR showed that the distribution of sulfate was complete substitution at C_6, partial substitution at C_2 in Na MCS and only patial substitution at C_6 in Na-CAS.Anti-coagulation investigation indicated that the re calcium time(RT) of whole blood, and the activated partial thromboplastin time(APTT) and throbin time(TT) of human plasma were prolonged when Na-MCS or Na-CAS was added. Compared with sodium heparin, the blood anticoagulating activity of Na-MCS was even stronger, while the anticoagulation activity of Na-CAS was much weaker than that of Na-MCS.

Key words: microcrystalline cellulose, cellulose tri-acetate, sulfation, anticoagulant

中图分类号: