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首页> 外文期刊>RSC Advances >Pickering emulsion gels based on insoluble chitosan/gelatin electrostatic complexes
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Pickering emulsion gels based on insoluble chitosan/gelatin electrostatic complexes

机译：基于不溶性壳聚糖/明胶静电复合物的皮克林乳液凝胶

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Food-grade colloidal particles or complexes made from natural polymers via noncovalent interactions can be good candidates for applications in food and non-food industries. In this work, insoluble chitosan/gelatin-B (CH/GB) complex particles were used for the first time as effective Pickering emulsifiers to make long-term stable oil-in-water emulsions and emulsion gels by one-step homogenization. The CH/GB complexes were only formed in the oppositely charged pH region via electrostatic complexation of CH and GB, and the pH showed a remarkable effect on the surface activity of CH/GB mixed systems. The presence of CH/GB insoluble complexes significantly decreased the surface tension of the oil/water interface, therefore benefitting the formation of smaller emulsion droplet sizes and effectively hindering droplet coalescence, as supported by the increase of emulsion long-term stability. Increasing the oil volume fraction considerably accelerated the formation of a droplet network structure, resulting in a solid-like thermoreversible emulsion gel with tunable viscoelastic properties. Our results suggest that CH/GB insoluble complex particles are promising particulate emulsifiers for the preparation of surfactant-free Pickering emulsions as well as emulsion gels.
机译：通过非共价相互作用制成的食品级胶体颗粒或由天然聚合物制成的络合物可以是食品和非食品工业中应用的良好候选者。在这项工作中，不溶的壳聚糖/明胶-B（CH / GB）复合物颗粒首次使用作为有效的旋转乳化剂，通过单步均匀化制备长期稳定的水乳液和乳液凝胶。 CH / GB复合物仅通过CH和GB的静电络合形成在相对的电荷的pH区域中，并且pH对CH / GB混合系统的表面活性显示出显着影响。 CH / GB不溶性配合物的存在显着降低了油/水界面的表面张力，因此受益于形成较小的乳液液滴尺寸和有效地阻碍液滴聚结，如乳液长期稳定性的增加所支持。增加油量级分显着加速了液滴网络结构的形成，导致具有可调谐粘弹性的固体热可逆乳液凝胶。我们的研究结果表明，CH / GB不溶性复合物颗粒是颗粒状乳化剂，用于制备无表面活性剂的烘焙乳液以及乳液凝胶。

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