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摘要：本实验研究以天然霍霍巴油为植物油脂形成的亚微乳体系的规律性并考察其稳定性。采用高速剪切法制得初乳，二次高压均质法制得终乳。运用单因素法，以粒径大小，粒径分散系数，稳定性等为评价指标，分别考察制备工艺、组成和添加剂对形成亚微乳液的影响并且不断优化配方。所得的样品分成三份分别放置于4℃，室温，40℃条件下放置2个月，观察其外观性状、粒径大小、粒径分布等的变化。实验结果表明：在优化后的配方及工艺条件下，所制得的以霍霍巴油形成的亚微乳液平均粒径大小为266.1 nm,粒径分布系数为0.223，峰数为单峰。稳定性实验表明样品放置2个月后，外观性状无变化，在常温和40℃下放置亚微乳液稳定性良好，放置于4℃的情况下粒径变小。该配方和工艺可行，制备的霍霍巴油亚微乳液可以用于化妆品中，在适宜温度下避光储存，不得冷冻。6167
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关键词：霍霍巴油；亚微乳；高压均质；稳定性
Comprensive Study on the Rules of the submicron Emulsion Prepared by Plant Oil
Abstracts： To prepare natural jojoba oil submicron emulsion and investigate its regularity and stability.High speed shear method is designed to make colostrums, and then milk can be made though high pressure homogeneous. The content of preparation is determined by control variable method to optimize the formulation and its properties such as the size, PDI and stability are studied. The samples were pided by three parts and were stored in 4℃，room temperature and 40 ℃ separately. Under the optimal formulation, the jojoba submicron emulsion had good stability. The mean diameter, polymer disperse index and peak number of the jojoba oil submicron emulsion prepared by the method were 266.1nm, 0.223 and single peak. The stability experiment showed that after two months, the diameter of submicron emulsion in 40℃ and room temperature has no change，however，in 4℃，the diameter is getting bigger. the prepared jojoba oil submicron emulsion can be applied in cosmetics and should be kept in the proper temperature, avoiding light and freeze.
Key Words:Jojoba oil;Submicron emulsion;High pressure homogenization;Stability
目 录
1 绪论 1
1.1 亚微乳液的概述 1
1.2 亚微乳液与乳状液的区别 1
1.3 亚微乳液的形成机理 2
2实验内容 7
2.1 实验原料与设备 7
2.1.1 实验原料 7
2.1.2仪器设备 7
2.2实验方法 8
2.2.1 亚微乳液的制备方法 8
2.2.2 亚微乳液的粒径测定方法 8
3实验结果与讨论 9
3.1 制备工艺的优化 9
3.1.1 乳化温度的优化 9
3.1.2 均质压力的优化 10
3.1.3 均质次数的优化 11
3.2 配方组成的影响 12
3.2.1霍霍巴油用量的影响 12
3.2.2乳化剂的影响 12
3.3 添加剂的影响 14
3.3.1有机添加剂的选择 14
3.3.2无机添加剂NaCl用量的影响 15
3.3.3表面活性剂的影响 17
3.4 亚微乳液的稳定性 18
3.4.1亚微乳液在室温时的稳定性 18
3.4.2亚微乳液在40℃的稳定性 19
3.4.3亚微乳液在4℃的稳定性 19
4. 结 论 20
致 谢 21
参考文献 22
1 绪论
1.1 亚微乳液的概述