桉树挥发物微胶囊乳液的制备及其缓释效果研究  

Preparation and Controlled Release Effectiveness of Microcapsules Volatile Oil from Eucalyptus

作　　者：杨兴翠[1] 李奕震[1] 温秀军[1] 曹庸[1] 郑礼飞[1] 曹春雷[1] 马涛[1] 张蒙[1] 朱雪姣[1] 易思雨 

机构地区：[1]华南农业大学林学院,广州510642

出　　处：《中国生物防治学报》2014年第4期472-480,共9页Chinese Journal of Biological Control

基　　金：国家公益性行业(林业)科研专项(201004003-7);广东省自然科学基金(9151064201000031)

摘　　要：本文以辛烯基琥珀酸淀粉钠、乳化变性淀粉、麦芽糊、β-环糊精、液体石蜡为壁材料,桉树挥发物?TERPINENE和DL-LIMONENE特定比例的混配液为芯材,制备桉树挥发物微胶囊乳液,研究壁材料不同比例等条件对微胶囊乳液粒度分布及包覆率的影响,并进行了室内缓释试验的研究。获得制备微胶囊乳液的最佳配方,以辛烯基琥珀酸淀粉钠:乳化变性淀粉-809:明胶:麦芽糊精:β-环糊=15:5:0:3:2为壁材,壁材与芯材比例为10:1,剪切速度为10000 r/min,剪切时间2 min,高压均质压力为20 MPa,均质2 min,二次均质加入10 g液体石蜡,均质压力20 MPa,均质时间4 min。胶囊化的桉树挥发物可延长其挥发时间,缓释时间达30 d以上。In this paper, octenylsuccinate starch sodium, emulsifying starch, maltodextrin,β-cyclodextrin, liquid paraffin as wall materials, eucalyptus volatiles （c TERPINENE and DL-LIMONENE） as the core material, were prepared for eucalyptus volatiles microcapsule emulsion. The factors which affect particle size distribution and encapsulating rate of the emulsion microcapsules, such as the proportion of the wall materials, the proportion of wall materials and core materials, the shear velocity etc, were studied. The results showed that the optimum preparation condition was microcapsule emulsion formula： starch sodium octenyl succinate： emulsion-809 starch： gelatin： maltodextrin：β-cyclodextrin = 15：5：0：3：2, the wall material and core material ratio of 10：1, the shear rate of 10000 r/min, shearing time 2 min, high homogenization pressure of 20 MPa, homogeneous time 2 min, the second homogeneous with 10 g liquid paraffin, homogenization pressure 20 MPa, the second homogeneous time of 4 min. Encapsulated eucalyptus volatiles extended their evaporation rate, sustained release effect more than 30 days indoor.

关 键 词：桉树挥发物 配方 微胶囊乳液 粒度分布 缓释 

分 类 号：S476[农业科学—农业昆虫与害虫防治]