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Zein Particle-Stabilized Water-In-Water Emulsion as a Vehicle for Hydrophilic Bioactive Compound Loading of Riboflavin
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2019-08-09 00:00:00 , DOI: 10.1021/acs.jafc.9b02415 Jia-Feng Chen 1 , Jian Guo 1 , Si-Hong Liu 1 , Wei-Qian Luo 1 , Jin-Mei Wang 1 , Xiao-Quan Yang 1
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2019-08-09 00:00:00 , DOI: 10.1021/acs.jafc.9b02415 Jia-Feng Chen 1 , Jian Guo 1 , Si-Hong Liu 1 , Wei-Qian Luo 1 , Jin-Mei Wang 1 , Xiao-Quan Yang 1
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Vitamins and flavonoids are two kinds of essential trace bioactives which are prone to photodegradation during food processing and storage. In this study, a particle-stabilized water-in-water (W/W) emulsion system composed of soy protein isolate (SPI) and guar gum (GG) was applied in loading riboflavin. Based on the significant binding affinity differences of SPI (Ka = 1.11 × 105 L mol–1) and GG (Ka = 9.00 × 103 L mol–1) to riboflavin, this hydrophilic and light-sensitive bioactive compound was loaded in SPI-rich droplets. Confocal images indicated that a stable microstructure of SPI-rich droplets suspended in GG-rich continuous phase was successfully constructed by manipulating the proportion of the two polymeric components and using zein-based particles (ZPs) as stabilizers. These negatively charged particles modified by pectin with a hydrodynamic diameter of 533 ± 5.7 nm were able to adsorb at the SPI/GG interface and subsequently stabilized the SPI-in-GG emulsion. Fluorescence spectra of riboflavin suggested that the formation of such W/W emulsion could effectively delay the photodegradation of riboflavin during an 8 h ultraviolet irradiation, and its color was maintained to a maximum extent. Therefore, this structured W/W emulsion could be a desired architecture for delivering light-sensitive cargo.
中文翻译：
玉米醇溶蛋白稳定化的水包水乳液作为核黄素亲水性生物活性化合物负载的载体
维生素和类黄酮是两种必需的微量生物活性物质，在食品加工和存储过程中容易发生光降解。在这项研究中，由大豆蛋白分离物（SPI）和瓜尔豆胶（GG）组成的稳定颗粒的水包水（W / W）乳化体系用于加载核黄素。基于SPI（K a = 1.11×10 5 L mol –1）和GG（K a = 9.00×10 3 L mol –1）的显着结合亲和力差异在核黄素中，将这种亲水性且对光敏感的生物活性化合物装在富含SPI的液滴中。共焦图像表明，通过控制两种聚合物组分的比例并使用玉米醇溶蛋白基颗粒（ZP）作为稳定剂，成功地构建了悬浮在富含GG的连续相中的富含SPI的液滴的稳定微观结构。这些被果胶修饰的带负流体的流体动力学直径为533±5.7 nm的负电荷颗粒能够吸附在SPI / GG界面上，并随后稳定了SPI-in-GG乳液。核黄素的荧光光谱表明，这种W / W乳液的形成可以有效地延迟8h紫外线照射下核黄素的光降解，并且其颜色保持最大程度。所以，
更新日期：2019-08-09
中文翻译：
玉米醇溶蛋白稳定化的水包水乳液作为核黄素亲水性生物活性化合物负载的载体
维生素和类黄酮是两种必需的微量生物活性物质，在食品加工和存储过程中容易发生光降解。在这项研究中，由大豆蛋白分离物（SPI）和瓜尔豆胶（GG）组成的稳定颗粒的水包水（W / W）乳化体系用于加载核黄素。基于SPI（K a = 1.11×10 5 L mol –1）和GG（K a = 9.00×10 3 L mol –1）的显着结合亲和力差异在核黄素中，将这种亲水性且对光敏感的生物活性化合物装在富含SPI的液滴中。共焦图像表明，通过控制两种聚合物组分的比例并使用玉米醇溶蛋白基颗粒（ZP）作为稳定剂，成功地构建了悬浮在富含GG的连续相中的富含SPI的液滴的稳定微观结构。这些被果胶修饰的带负流体的流体动力学直径为533±5.7 nm的负电荷颗粒能够吸附在SPI / GG界面上，并随后稳定了SPI-in-GG乳液。核黄素的荧光光谱表明，这种W / W乳液的形成可以有效地延迟8h紫外线照射下核黄素的光降解，并且其颜色保持最大程度。所以，
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