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投稿时间：2023-07-11
投稿时间：2023-07-11
中文摘要: 为探讨微晶纤维素（microcrystalline cellulose，MCC）-猪油Pickering 乳液的制备方法，分析乳化液组成对乳化效果的影响规律，以水相中MCC 颗粒浓度和油相比例为变动因素，测定乳液的外观结构、乳析指数、微观结构、粒径、Zeta 电位以及乳液流变特性等指标，并分析变化情况。结果表明，油相比例为50%，MCC 颗粒浓度为0.4%～1.0%时，随着颗粒浓度的增加，乳液液滴粒径逐渐减小，乳析指数、Zeta 电位绝对值、乳液的黏度及储能模量（G′）与损耗模量（G″）逐渐增大，乳液稳定性逐渐增加。MCC 颗粒浓度为1.0%，油相比例为30%～60%时，随着油相比例的增加，乳液的液滴粒径及乳析指数逐渐增加，Zeta 电位绝对值呈先增大后减小趋势，乳液的黏度及储能模量（G′）与损耗模量（G″）逐渐增大。因此，MCC 颗粒浓度为1.0%、油相比例为50%～60%时能制备出稳定的乳化液。
中文关键词: 微晶纤维素 Pickering 乳液 MCC 颗粒浓度 油相比例 制备效果
Abstract:The preparation method of microcrystalline cellulose（MCC）-lard Pickering emulsion was explored and the effect of emulsion composition on emulsification was analyzed. The MCC particle concentration in the aqueous phase and the volume proportion of the oil phase were taken as the changing factors，and the appearance structure，creaming index，microstructure，particle size，Zeta potential，and rheological properties of the emulsion and their changes were determined. The results showed that the emulsion prepared with the oil phase at 50% presented decreased droplet size and increased creaming index，absolute Zeta potential，viscosity，storage modulus（G′），and loss modulus（G″）as the MCC particle concentration increased within the range of 0.4%-1.0%，demonstrating increasing stability. When the MCC particle concentration was 1.0% and the oil phase proportion increased within the range of 30%-60%，the emulsion demonstrated increased droplet size，creaming index，viscosity，G′，and G″ and first increased and then decreased absolute Zeta potential.In conclusion，the stable emulsion can be prepared with the MCC particle concentration of 1.0% and the oil phase proportion of 50%-60%.
keywords: microcrystalline cellulose Pickering emulsion MCC particle concentration oil phase proportion preparation effect
文章编号：202421012 中图分类号： 文献标志码：
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