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Development of stable high internal phase emulsions by pickering stabilization: Utilization of zein-propylene glycol alginate-rhamnolipid complex particles as colloidal emulsifiers
Food Chemistry ( IF 8.5 ) Pub Date : 2018-09-20 , DOI: 10.1016/j.foodchem.2018.09.122
Lei Dai , Shufang Yang , Yang Wei , Cuixia Sun , David Julian McClements , Like Mao , Yanxiang Gao

In this study, zein-propylene glycol alginate-rhamnolipid complex particles were prepared with suitable three-phase contact angles (θ) for stabilizing oil-in-water Pickering high internal phase emulsions (HIPEs). At a fixed oil phase volume (φ = 0.75), particle concentration influenced the stability, physical properties, and rheology of HIPEs. Confocal laser scanning microscopy showed that complex particles formed a densely packed particle layer around the oil droplets and a three-dimensional network in the continuous phase, highlighting the potential for the complex particles to act as effective HIPE stabilizers. The storage modulus (G′) was higher than loss modulus (G″) over the entire angular frequency range, suggesting HIPEs had an elastic gel-like structure. The HIPEs had good stability across a range of environmental conditions (pH, temperatures and salt concentrations). These findings may extend the application of zein in foods and the HIPEs formed may be used as novel delivery system for bioactives.



中文翻译:

通过选择器稳定化来开发稳定的高内相乳液:玉米醇溶蛋白-褐藻糖醇-鼠李糖脂复合物颗粒作为胶体乳化剂的用途

在这项研究中,制备玉米醇溶蛋白-丙二醇藻酸酯-鼠李糖脂复合物颗粒,并使其具有合适的三相接触角(θ),以稳定水包油Pickering高内相乳液(HIPEs)。在固定的油相体积(φ= 0.75)下,颗粒浓度影响HIPE的稳定性,物理性质和流变性。共聚焦激光扫描显微镜显示,复合颗粒在油滴周围形成了紧密堆积的颗粒层,并在连续相中形成三维网络,突出了复合颗粒用作有效HIPE稳定剂的潜力。在整个角频率范围内,储能模量(G')高于损耗模量(G''),表明HIPEs具有弹性凝胶状结构。HIPE在各种环境条件(pH,温度和盐浓度)。这些发现可能会扩展玉米醇溶蛋白在食品中的应用,形成的HIPEs可以用作生物活性物质的新型输送系统。

更新日期:2018-09-20
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