当前位置：
X-MOL 学术
›
ACS Food Sci. Technol.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Facile and Robust Route for Preparing Pickering High Internal Phase Emulsions Stabilized by Bare Zein Particles
ACS Food Science & Technology ( IF 2.6 ) Pub Date : 2021-08-18 , DOI: 10.1021/acsfoodscitech.1c00218 Fu-Zhen Zhou 1, 2 , Xin-Hao Yu 1 , Dong-Hui Luo 3 , Bo Liu 1 , Tao Yang 1, 4 , Shou-Wei Yin 1, 5 , Xiao-Quan Yang 1
ACS Food Science & Technology ( IF 2.6 ) Pub Date : 2021-08-18 , DOI: 10.1021/acsfoodscitech.1c00218 Fu-Zhen Zhou 1, 2 , Xin-Hao Yu 1 , Dong-Hui Luo 3 , Bo Liu 1 , Tao Yang 1, 4 , Shou-Wei Yin 1, 5 , Xiao-Quan Yang 1
Affiliation
|
Pickering high internal phase emulsions (HIPEs) stabilized by biological particles have attracted growing interest. However, developing Pickering HIPEs with bare zein particles (ZPs) is still a challenge. Here, we demonstrated a facile method for the development of Pickering HIPEs stabilized solely by bare ZPs. In brief, the pH value was adjusted during the emulsification; thus, the aggregation of ZPs transferred from the continuous phase of HIPEs to the oil–water interface. In detail, the strong hydrophobicity of ZPs was changed into intermediate wettability after changing pH, as indicated by the value of the three-phase contact angle (θ) decreasing from 108.4° to around 90°. Through adjusting the assembly behaviors of ZPs, the interfacial and continuous microstructures in the emulsification system were defined accordingly, therefore forming stable Pickering HIPEs. Generally, with the final NaOH concentration ranging from 0.6 to 2.0 mM in HIPEs (pH 6.6–8.9), HIPEs with an internal phase volume fraction of 80% were prepared successfully using pristine ZPs as sole eco-friendly Pickering stabilizers. The microstructure of HIPEs featured that ZPs deposited in situ at the oil–water interface, forming an effective physical barrier, while the rest of ZPs that remained in water phase functioned as the structural element and stacked into a 3D network architecture, constituting another strong barrier and facilitating the immobilization of oil droplets. This microstructure contributed to satisfactory stability, good viscoelasticity behavior, and ideal thixotropic recovery of HIPEs. Moreover, the HIPEs obtained here served as the encapsulation system for probiotics, and they maintained the viability of Lactobacillus plantarum at 4 °C. The facile method developed here paves the way for preparing Pickering HIPEs stabilized by protein-based particles.
中文翻译：
制备由裸玉米蛋白颗粒稳定的 Pickering 高内相乳液的简便而可靠的途径
由生物颗粒稳定的 Pickering 高内相乳液 (HIPE) 引起了越来越多的兴趣。然而，用裸玉米蛋白颗粒 (ZP) 开发 Pickering HIPE 仍然是一个挑战。在这里，我们展示了一种开发仅由裸 ZP 稳定的 Pickering HIPE 的简便方法。简而言之，就是在乳化过程中调节pH值；因此，ZPs 的聚集从 HIPEs 的连续相转移到油水界面。具体而言，ZPs 的强疏水性在改变 pH 值后变为中等润湿性，如三相接触角 (θ) 值从 108.4° 减小到 90° 左右所示。通过调整ZPs的组装行为，相应地定义了乳化体系中的界面和连续微观结构，因此形成稳定的 Pickering HIPE。通常，在 HIPE 中最终 NaOH 浓度范围为 0.6 至 2.0 mM（pH 6.6-8.9），使用原始 ZP 作为唯一环保的 Pickering 稳定剂成功制备了内相体积分数为 80% 的 HIPE。HIPEs 的微观结构特征是 ZPs 沉积原位在油水界面，形成有效的物理屏障，而留在水相中的其余 ZP 作为结构元素，堆叠成 3D 网络结构，构成另一个强大的屏障，促进油滴的固定。这种微观结构有助于 HIPE 获得令人满意的稳定性、良好的粘弹性和理想的触变恢复。此外，这里获得的 HIPE 作为益生菌的封装系统，它们在 4°C 下保持了植物乳杆菌的活力。这里开发的简便方法为制备由基于蛋白质的颗粒稳定的 Pickering HIPE 铺平了道路。
更新日期：2021-09-17
中文翻译：
制备由裸玉米蛋白颗粒稳定的 Pickering 高内相乳液的简便而可靠的途径
由生物颗粒稳定的 Pickering 高内相乳液 (HIPE) 引起了越来越多的兴趣。然而，用裸玉米蛋白颗粒 (ZP) 开发 Pickering HIPE 仍然是一个挑战。在这里，我们展示了一种开发仅由裸 ZP 稳定的 Pickering HIPE 的简便方法。简而言之，就是在乳化过程中调节pH值；因此，ZPs 的聚集从 HIPEs 的连续相转移到油水界面。具体而言，ZPs 的强疏水性在改变 pH 值后变为中等润湿性，如三相接触角 (θ) 值从 108.4° 减小到 90° 左右所示。通过调整ZPs的组装行为，相应地定义了乳化体系中的界面和连续微观结构，因此形成稳定的 Pickering HIPE。通常，在 HIPE 中最终 NaOH 浓度范围为 0.6 至 2.0 mM（pH 6.6-8.9），使用原始 ZP 作为唯一环保的 Pickering 稳定剂成功制备了内相体积分数为 80% 的 HIPE。HIPEs 的微观结构特征是 ZPs 沉积原位在油水界面，形成有效的物理屏障，而留在水相中的其余 ZP 作为结构元素，堆叠成 3D 网络结构，构成另一个强大的屏障，促进油滴的固定。这种微观结构有助于 HIPE 获得令人满意的稳定性、良好的粘弹性和理想的触变恢复。此外，这里获得的 HIPE 作为益生菌的封装系统，它们在 4°C 下保持了植物乳杆菌的活力。这里开发的简便方法为制备由基于蛋白质的颗粒稳定的 Pickering HIPE 铺平了道路。
京公网安备 11010802027423号