复凝聚法生姜精油微胶囊的制备和性能研究

摘要：本文采用复凝聚法，采用壳聚糖作为壁材，生姜精油为芯材，三聚磷酸钠（TPP）为交联剂，进行生姜精油微胶囊的制备。考察了壳聚糖/海藻酸钠比、乳化剂类型、交联剂类型、精油质量、体系固形物含量、壳聚糖在体系中的比例、乳化剂/精油比、芯壁比、交联剂/壳聚糖比等因素对微胶囊粒径的影响。采用傅立叶变换红外光谱仪（FTIR）、热重分析仪、对微胶囊的结构以及包埋率进行了分析和表征测定。结果表明，在高固形物含量下，采用三聚磷酸钠作为交联剂，AEO-9为乳化剂，壳聚糖占体系的1%，乳化剂/精油比为1:7，芯壁比为1:3，交联剂占壳聚糖的2%时，制备出来的生姜精油微胶囊粒径大小适宜，为464.6纳米，精油包埋率为4.96%。由红外结果表明在900cm-1处，有代表取代的=C-H键存在，表明了生姜精油已经被成功包埋。34835
毕业论文关键词：复凝聚法；壳聚糖；生姜精油；微胶囊
Research of Performance and Preparation of Ginger Oil Loaded Microcapsules
Abstract：By the condensation method, this paper using chitosan as wall material, ginger oil as the core material, sodium tripolyphosphate (TPP) as crosslinking agent to prepare ginger oil loaded microcapsules. The effects of chitosan / alginate ratio, emulsifier, cross-linking agent, oil quality, system solid content, proportion of chitosan in the system, emulsifier / oil ratio, core wall ratio, crosslinking agent / chitosan ratio of microcapsule particle size were studied. The structure and the embedding rate of the micro capsule and the structure of the microcapsules were analyzed by Fu Liye transform infrared spectrometer (FTIR) and the structure of the microcapsules. The results show that under the high solids content, using sodium tripolyphosphate as cross-linking agent and AEO-9 as emulsifier, chitosan system accounted for 1%, emulsifier and oil ratio is 1:7, core wall ratio is 1:3, crosslinking agent 2% chitosan, preparation of the ginger oil micro capsules’ size are suitable as 464.6 nm, essential oil bag buried rate was 4.96%. From the results of the infrared show that in the 900cm-1, there are representatives to replace the =C-H bond, which shows that ginger essential oil has been successfully embedded.
Key Words: Condensation method; Chitosan; Ginger oil; Microcapsules
目   录
1    绪论    1
1.1    微胶囊技术的发展    1
1.2    微胶囊的制备    1
1.2.1    界面聚合法    1
1.2.2    原位聚合法    2
1.2.3    喷雾干燥法    2
1.2.4    复凝聚法    3
1.2.5    干燥浴法（复相乳液法）    3
1.3    生姜精油胶囊的研究现状    4
1.3.1    生姜精油的应用    4
1.3.2    壁材选择[20]    4
1.4    国内生姜精油微胶囊的研究    5
1.4.1    国内生姜精油微胶囊制备工艺    5
1.4.2    香料微胶囊粒径的主要作用    5
1.4.3    国内微胶囊粒径的测量方法    6
1.5    本课题的研究意义和目的    6
2    实验部分    7
2.1    实验仪器及设备    7
2.2    实验原料    7
2.3    低含量生姜精油微胶囊的制备工艺研究    8
2.3.1    单因素实验    8
2.4    高含量生姜精油微胶囊的制备工艺研究    8 复凝聚法生姜精油微胶囊的制备和性能研究:http://www.751com.cn/huaxue/lunwen_32600.html