磁性壳聚糖微球ppt课件
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本科学生毕业论文壳聚糖磁性载药微球的研究及性能分析院系名称:材料与化学工程学院专业班级:应用化学10-1班学生姓名:唐宇佳指导教师:王晓丹职称:讲师黑龙江工程学院二○一四年六月The Graduation Thesis for Bachelor's Degree Magnetic Chitosan Microspheres Research and Performance AnalysisCandidate:Tang YujiaSpecialty : Applied ChemistryClass : 10-1Supervisor:Lecture Wang XiaodanHeilongjiang Institute of Technology2014-06·Harbin摘要近些年随着人们的生活水平及科技的提高,普通的药物已经不能满足人类的需求,因此在此基础上科学家们研究了新型的药物。
壳聚糖(Chitosan)能使血液迅速地被凝固,我们通常用它来止血。
由于它具有生物相容性所以还可以用它作为填埋伤口,其还能摧毁细菌、加快伤口的好转、吞噬分泌物、不受水的干扰等作用,磁流体是利用Fe3+和Fe2+以在碱性的条件下制取的。
以壳聚糖、姜黄素、磁流体为原料采用复乳化交联法获得磁性载药壳聚糖微球。
最后对磁性壳聚糖载药微球的磁性、形貌、药物缓释进行研究。
实验表明,最佳反应条件是壳聚糖醋酸溶液的浓度为 1.5%,适量的姜黄素和磁流体,乳化剂的量是壳聚糖醋酸溶液的20%,液体石蜡为200%,交联剂为50%,转速300r/min,反应温度在60℃时反应2h得粒径均匀的黄色的沉淀,即壳聚糖磁性载药微球,其外貌光滑,粒径在10~20μm之间,能在较长的时间里进行药物缓释,时间长达6小时以上。
关键词:壳聚糖;磁流体;姜黄素;载药微球;药物缓释ABSTRACTIn recent years with the improvement of people's living standards and technology,common drugs have been unable to meet human needs,therefore,on this basis,scientists have studied the novel drug.Chitosan blood can be rapidly solidified,we usually use it to stop the bleeding. Because of its biocompatible so you can use it as a landfill wounds,It can also destroy bacteria and accelerate wound improved,swallowed secretions,interference and other effects from water,MHD is the use of Fe3+and Fe2+under alkaline conditions in preparation for.Chitosan,curcumin,magnetic fluid as raw materials using a complex emulsion cross linking method to obtain magnetic chitosan microspheres containing the drug,finally,the magnetic Chitosan microspheres magnetic morphology,drug delivery research.Experiments show that The optimal reaction conditions for the concentration of chitosan was 1.5% acetic acid solution and the right amount of curcumin and magnetic fluids,the amount of emulsifier is 20% of chitosan acetic acid solution,liquid paraffin was 200%,crosslinking agent is 50%,the speed of 300 r/min,the reaction temperature of the reaction have a uniform particle size of the yellow precipitate 2h at 60℃,the chitosan magnetic carrier drug microsphere is.Its appearance is smooth,particle size between 10~20μm,the drug release can be a long time,he time up to more than six hours.Key words: Chitosan; magnetic fluid; curcumin; microspheres; drug deliver目录摘要 (I)Abstract (II)第1章绪论 (1)1.1本课题的选题背景 (1)1.2研究目的及意义 (1)1.3国内外研究现状 (2)1.3.1国外研究现状 (2)1.3.2国内研究现状 (3)1.4壳聚糖载药微球微球的简介 (4)1.4.1载药微球 (4)1.4.2壳聚糖简介 (5)1.4.3壳聚糖应用 (5)1.5主要研究内容 (7)第2章壳聚糖空白微球的制备 (8)2.1实验药品与仪器 (8)2.1.1实验药品 (8)2.1.2实验仪器 (8)2.2空白微球 (8)2.2.1壳聚糖空白微球的制备 (8)2.3试验方法 (10)2.3.1实验内容 (10)2.3.2样品的表征 (10)2.4结果与讨论 (11)2.4.1反应温度对产物性能的影响 (11)2.4.2对产物性能的影响 (11)2.4.3联时间的影响 (11)2.5本章小结 (12)第3章壳聚糖磁性载药微球的制备 (13)3.1壳聚糖磁性载药微球的合成 (13)3.2.1磁性微球 (13)3.2.2磁流体 (13)3.2.3姜黄素 (14)3.3实验药品与仪器 (14)3.3.1实验药品 (14)3.3.2实验仪器 (14)3.4技术路线 (15)3.5壳聚糖磁性载药微球的合成 (15)3.5.1实验内容 (15)3.5.2样品的性质与表征 (16)3.6壳聚糖磁性载药微球的药物释放 (17)3.6.1标准曲线的建立 (17)3.6.2药物缓释 (18)3.7本章小结 (19)结论 (20)参考文献 (21)致谢 (24)附录 (25)第1章绪论1.1本课题的选题背景近些年随着人们的生活水平及科技的提高,普通的药物已经不能满足人类的需求,因此在此基础上科学家们研究了新型的药物,现在各国都对特殊药物载体进行研究,将生命安全和预防疾病等作为研究的主要目的。
磁性壳聚糖微球固定化脂肪酶的研究Study of immobilization of lipase in magnetic chitosan microspheres纵伟刘艳芳赵光远ZONG Wei LIU Yan-fang ZHAO Guang-yuan(郑州轻工业学院食品与生物工程学院,河南郑州450002)(School of Food and Biological Engineering,Zhengzhou University of Light Industry,Zhengzhou,Henan450002,China)摘要:目的:为制备具有高活性的固定化脂肪酶。
方法:以磁性壳聚糖微为载体,用物理吸附法固定化脂肪酶,对影响固定化的各种因素进行考察,确定了最优条件,并比较游离酶和固定化酶的pH和热稳定性,研究固定化酶的使用稳定性;结果:固定化的适宜条件为采用加酶量600U/g,温度5℃,pH7.0,固定时间2h。
固定化酶的pH和热稳定性都优于游离酶,固定化酶连续使用5次,其相对酶活仍为使用前的57.8%,具有较好的操作稳定性。
结论:磁性壳聚糖微球是固定脂肪酶的良好载体。
关键词:磁性壳聚糖微球;固定;脂肪酶Abstract:Objective:To produced the immobilized lipase with higher activity; Methods:Lipase(EC3.1.1.3)was immobilized in magnetic chitosan microspheres by physical adsorption.In this article.different factors that influenced the immobilization were investigated,and the optimum conditions were ascertained.Comparative studies of pH and thermal stability between free lipase and immobilized lipase were also conducted;Results:The optimum factors of immobilization were as follows:600U/g lipase was added to the solution at pH7.0,5℃for2h.In comparison with free lipase,the pH and thermal stability of immobilized lipase was increased.To use in hydrolyzation of oil,the immobilized enzyme activity remained activity of 57.8%after5repeated hydrolyzation.Conclusion:Magnetic chitosan microspheres was a kind of good support for immobilized enzyme. Keywords:Magnetic chitosan microspheres;Immobilization;Lipase——————————基金项目:河南省教育厅杰出科研人才创新工程项目(项目编号:2007KYCX0020)作者简介:纵伟(1965-),男,郑州轻工业学院食品与生物工程学院教授、博士。