饮料中乳酸菌包埋的研究

以玉米为基础原料,采用全酶法糖化工艺进行液化和糖化,接种适宜的乳酸菌进行发酵,然后采用复凝聚法在液相中将乳酸菌包埋,以此延长菌体在液相中的存活时间.乳酸菌被包埋后,在饮料中添加乳酸链球菌素和低聚果糖,对饮料中未被包埋或已被包埋但又释放的菌体的产酸进行控制,同时也保证其在饮料中存活.通过正交试验法找到最佳的微胶囊造粒条件及乳酸链球菌素和低聚果糖的添加量.     

百里香精油在化妆品中的应用研究进展

百里香精油是天然无毒且富含生物活性物质的植物提取物,具备芬香、抑菌和抗氧化 等可应用于化妆品的突出功效。但其是一种挥发性油,难溶于水,易受到光、氧气、湿度和温度的 影响,又限制了其在化妆品的应用。论文综述了百里香精油的常用提取方式以及主要化学成分, 总结了百里香精油的赋香与抗焦虑、美白、保湿、祛痘抗炎、防晒与抗衰老和护发等应用于化妆品 的基本功效,论述了四种百里香精油在化妆品中应用的关键技术,如微胶囊、纳米胶囊、微乳液和 纳米乳等技术,旨在为百里香精油在化妆品领域中的应用提供理论参考。     

玉米黄色素微胶囊的稳定性研究

研究了玉米黄色素微胶囊的制备和稳定性.采用研磨法制备玉米黄色素微胶囊,并研究微胶囊前后的玉米黄色素在不同温度、p H值、光照和微波条件下的色素损失率.结果表明,玉米黄色素微胶囊化后在温度、p H值、光照和微波加热条件下的损失率最高分别减小了5.6%,12.0%,15.42%和10.92%,微胶囊化可以明显提高玉米黄色素的稳定性.     

超声乳化-原位聚合法制备薄荷脑微胶囊

采用原位聚合法,结合超声乳化工艺,制备以薄荷脑为囊芯的微胶囊,并研究了反应条件对微胶囊形貌和粒径的影响.利用扫描电镜(SEM)、光学显微镜(OM)、傅里叶红外光谱(FT-IR)、差示扫描量热仪(DSC)、热重分析(TGA)、激光粒度测试等手段对薄荷脑微胶囊进行了结构和性能的表征.结果表明:所制得的薄荷脑微胶囊包覆良好,能够有效延缓薄荷脑的挥发和逸散;通过调节缩聚反应时间、薄荷脑添加量、反应温度可以得到粒径较为均一、分散性良好的微胶囊;在一定范围内,可以通过提高乳化剂质量浓度和超声功率来减小微胶囊粒径及其分布区间.     

微胶囊壁材的选择及其在食品工业中的应用

介绍了微胶囊的性质、壁材的选择、徼胶囊技术在食品工业中的应用及其发展前景。     

Progress in fabricating arrays of soft spherical vessels on mesoscale with spatial control

Microarrays of spherical vessel-like colloids such as liposomes, polymerized vesicles and polyelectrolyte capsules may find diverse applications in bioanalysis, biosensing, and combinatorial chemistry, for their capabilities in encapsulating chemical species such as drugs, biomolecules, probes, polymers and nanoparticles. This review reports the advances on methods for fabricating microarrays of the various hollow colloids. Related strategies are described in detail, including patterning techniques, surface modification methods, and tethering approaches such as oligonucleotide hybridization, receptor-ligand binding, covalent coupling and electrostatic interaction. The preliminary developments of functionalities of these arrays serving as sensor chips, microcarriers and microreactors are summarized as well.     

Built-up Effect of Core Material for Microencapsulated Flame Retardant Containing Dimethyl Methyl Phosphate

The flame retardants containing organophosphorus compounds have extensively been used inthe flame retarding of polymer materials.Among others,dimethyl methyl phosphate (DMMP) was applied in flame retarding of polyurethane owmg to its so much merit.However,the water-soluble property of DMMP restricted its application in textile fabric.The flame retardtag systemcontainirm DMMP will be microencapsulated to form a novel flame retardant that could be used in textiles.We have studied the builtup effect of DMMP with some inorganic compounds to improve the afterflame and afterglow suppression in the flame retarding system.The experimeatal data indicated that inorganic compounds containing various non-metal elements P,N,B and metal ions Mg2 ,Al3 ,Ca2 ,Zn2 ,Cu2 ,Mn4 could be applied in flame retarding systems as additives to effectively suppress afterflame or afterglow.     

原位聚合法制备微胶囊相变材料及其性能研究

本文通过原位聚合法制备了以脲醛树脂为壁材的微胶囊相变材料。采用SEM,DSC,光学显微镜等测试仪器考察了乳化剂种类、用量及乳化转速对微胶囊性能的影响;分析了助剂NaCl和分散剂NNO的用量对微胶囊微观形态、相变潜热和平均粒径的影响。实验结果表明,在乳化转速为3000rpm下,使用用量占芯材质量5%的复合乳化剂合成的微胶囊热性能良好,球体表面光滑,粒径均一。加入NaCl溶液后,微胶囊的相变潜热增加;当NaCl浓度为10%时,相变潜热达到最大,包覆率达到92.04%。同时加入占芯材质量2%的NNO,微胶囊的分散性好。     

微胶囊流体脉动热管的热输送特性

本文采用外径为2.5mm,内径为1.3mm的铜管,做成四环脉动热管,在不同工质（3％的FS-39E型微胶囊流体、乙醇、水、）、不同充液率（40％～80％）的条件下进行对比实验,探讨了工质和充液率对脉动热管热输送性能的影响。结果发现：与乙醇、水对比,微胶囊流体具有较宽的工作范围,尤其在高充液率的条件下,表现出良好的启动性能和热输送性能。     

Compound-fluidic electrospray: An efficient method for the fabrication of microcapsules with multicompartment structure

Microcapsules with multiple compartments are of significant importance in many applications such as smart drug delivery, microreactor, complicated sensor, and so on. Here we report a novel compound-fluidic electrospray method that could fabricate multicompartment microcapsules in a single step. The as-prepared microcapsules have multiple compartments inside. The compartments are separated from each other by inner walls made from shell materials, and different content can be independently loaded in each of them without any contact. We assemble a hierarchical compound nozzle by inserting certain numbers of metallic inner capillaries separately into a blunt metal needle. The particular configuration of the compound nozzle induces a completely and independently envelope of core fluids by shell fluid, as a result of which mulicomponent microcapsules with multicompartment structure can be obtained. And also, the number of inner compartments and the corresponding encapsulated components can be controlled by rationally designing the configuration of the compound nozzle. This general method can be readily extended to many other functional materials, especially for the effective encapsulation of active ingredients, such as sensitive and reactive materials.