摘要
以明胶与阿拉伯胶作为壁材,探讨复凝聚法制备薄荷油微胶囊的工艺.通过光学显微镜观测和粒径分布的测定,研究了不同因素对成囊性的影响.以微胶囊的含油量为制备工艺评价指标,通过正交实验法得到该工艺的最佳制备条件.确定的最佳工艺条件为:pH为4.1,壁材质量分数为5%,芯壁比为1:4,40℃,转速400r·min.在上述条件下,可形成表面光滑、大小均一的单核微胶囊,其含油量为90.2%.经红外光谱分析,证实了薄荷油已被包埋.该法制得胶囊的最小中值粒径为13.0μm,该样品中30μm以下约占80%.
A complex coacervation method was used to prepare mentha oil microcapsule with gelatin and gum arabic as wall materials. The effects of fabrication parameters on encapsulation were obtained by using optical microscope and determination of particle size distribution. The inclusion rate of mentha oil was used to evaluate the technologies based on orthogonal design. The optimum preparation conditions for inclusion were established as pH was 4.1, wall material concentration was 5%, the ratio of core to wall was 1：4,40 ℃ ,400 r/min. Under the above optimal condition, microcapsules with smooth surface and uniform sizes were formed, and the content of mentha oil in the microcapsule is 90.2%. The formation of the microcapsule can be proved by Fourier Transformed Infrared Spectrophotometer. The average diameter of the microcapsule is 13.0μm, the ratio of the microcapsule with a diameter below 30μm is approximately 80%.
出处
《天津工业大学学报》
CAS
北大核心
2009年第5期14-18,共5页
Journal of Tiangong University
关键词
薄荷油
微胶囊
复凝聚
粒径
mentha oil
microcapsule
complex coacervation
diameter
