苦荞麦淀粉微球的制备及表征

目的:优化苦荞麦淀粉微球的制备工艺和性能。方法:正交实验法优化交联淀粉微球的最佳工艺,红外、扫描电镜和粒度分析对其进行表征。结果:制备苦荞麦淀粉微球的最佳条件为:5%苦荞麦淀粉、0.9gSpan60、3mL环氧氯丙烷、反应温度60℃、反应时间为4h。在该条件下制备的淀粉微球近似球状,球体表面粗糙,结构呈多孔立体网络结构,平均粒径为32μm;其对次甲基蓝的吸附量为3.78mg/g。结论:苦荞麦淀粉微球粒径分布均匀,具有良好的吸附和缓释性能,可应用于药物载体。

Preparation and characterization of buckwheat starch microspheres

Objective:Aim to improve the preparation technology of buckwheat starch microspheres and performance.Method:Using the orthogonal experiment to optimize the technology of synthesis of cross linked starch micro-spheres,the product was characterized by FTIR,SEM and granularity analyzer.Result:The buckwheat starch microspheres optimal levels were 5% buckwheat starch,0.9g Span60,3mL epichlorohydrin,reaction temperature 60℃,reaction time 4h.Under the condition,the product was almost spherical,distributing particulates with through surface and had tri-dimensional structure,and an average diameter of 32μm.The methylene blue adsorption capacity of them was 3.78mg/g.Conclusion:The buckwheat starch microspheres with an even particle distribution could be synthesized under the optimal conditions,and it can be used as the favorable sorbent.