Abstract

Oil-in-water emulsions with different internal phase concentrations of Pistacia lentiscus fruit oil (PLFO) were investigated. These emulsions could be useful as a cream for healing wounds after laser skin resurfacing. Microscopic analysis and rheological measurements were employed to assess the effect of PLFO content on the emulsion properties for 24 hours and one year of storage in the refrigerator. Three emulsions were prepared with 5, 10, and 20% of PLFO. An increase in the internal phase concentration led to an increase in the size of oil droplets (from 1.07 to 2.24 µm) and their concentration in the aqueous phase, which significantly influenced the viscosity and stability of emulsions. However, the high content of PLFO (20%) led to a non-homogeneous distribution of the droplet size, which decreased the viscosity and stability of the emulsion. Furthermore, the creep-recovery tests were carried out to analyze the viscoelastic behavior of emulsions. The Burger model was applied for simulations using a function of PLFO concentration. The elastic character corresponds to the gel internal network structure of emulsion. The elasticity increased with the oil concentration, indicating that the strengthening of the structure of emulsion. The elastic behavior retains in time, suggesting that PLFO influences the emulsion stability. However, high oil concentration resulted in a weakening of the structure. One of the most significant findings of this study is that the emulsion containing 10% was most stable with time and can easily be transformed into liquid, which makes it useful for the skincare formulations due to release the active compounds.

中文翻译：

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相体积分数对黄连果水包油伤口愈合剂流变特性的影响

摘要

油包水乳液具有的不同内相浓度的黄连木 lentiscus研究了果油（PLFO）。这些乳剂可用作激光皮肤重铺后愈合伤口的乳膏。使用显微镜分析和流变学测量来评估PLFO含量对在冰箱中储存24小时和一年的乳液性能的影响。用5％，10％和20％的PLFO制备三种乳液。内相浓度的增加导致油滴大小（从1.07到2.24 µm）及其在水相中的浓度增加，这极大地影响了乳液的粘度和稳定性。但是，高含量的PLFO（20％）导致液滴尺寸的分布不均匀，从而降低了乳液的粘度和稳定性。此外，进行蠕变恢复测试以分析乳液的粘弹性行为。使用PLFO浓度函数将Burger模型应用于仿真。弹性特征对应于乳液的凝胶内部网络结构。弹性随着油浓度的增加而增加，表明乳液结构的增强。弹性行为会及时保留，表明PLFO影响乳液稳定性。然而，高油浓度导致结构减弱。这项研究最重要的发现之一是，含10％的乳剂随时间推移最稳定，并且很容易转化为液体，由于释放出活性化合物，因此可用于皮肤护理配方。使用PLFO浓度函数将Burger模型应用于仿真。弹性特征对应于乳液的凝胶内部网络结构。弹性随着油浓度的增加而增加，表明乳液结构的增强。弹性行为会及时保留，表明PLFO影响乳液稳定性。然而，高油浓度导致结构减弱。这项研究最重要的发现之一是，含10％的乳剂随时间推移最稳定，并且很容易转化为液体，由于释放出活性化合物，因此可用于皮肤护理配方。使用PLFO浓度函数将Burger模型应用于仿真。弹性特征对应于乳液的凝胶内部网络结构。弹性随着油浓度的增加而增加，表明乳液结构的增强。弹性行为会及时保留，表明PLFO影响乳液稳定性。然而，高油浓度导致结构减弱。这项研究最重要的发现之一是，含10％的乳剂随时间推移最稳定，可以轻松转化为液体，由于释放出活性化合物，因此可用于皮肤护理配方。弹性随着油浓度的增加而增加，表明乳液结构的增强。弹性行为会及时保留，表明PLFO影响乳液稳定性。然而，高油浓度导致结构减弱。这项研究最重要的发现之一是，含10％的乳剂随时间推移最稳定，可轻易转化为液体，由于释放出活性化合物，因此可用于皮肤护理配方。弹性随着油浓度的增加而增加，表明乳液结构的增强。弹性行为会及时保留，表明PLFO影响乳液稳定性。然而，高油浓度导致结构减弱。这项研究最重要的发现之一是，含10％的乳剂随时间推移最稳定，可以轻松转化为液体，由于释放出活性化合物，因此可用于皮肤护理配方。