香樟油在羧甲基纤维素和乳铁蛋白形成的复合凝聚层中的包埋控制β-胡萝卜素的释放

IF 4.6 Q1 CHEMISTRY, APPLIED
Ahmad El Ghazzaqui Barbosa , Augusto Bene Tomé Constantino , Lívia Pinto Heckert Bastos , Edwin Elard Garcia-Rojas
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引用次数: 7

摘要

本研究以羧甲基纤维素(CMC)和乳铁蛋白(Lf)为壁材,对核桃油(sacha inchi oil, SIO)中β-胡萝卜素进行包封,形成复合凝聚体。经zeta电位和浊度分析,CMC:Lf络合物凝聚形成的最佳条件为pH 5.0和1:14比。等温滴定量热法表明,配合物的形成分两个阶段:第一阶段是静电吸引驱动相互作用,第二阶段是静电和其他相互作用(如氢键)或结构构象并存。CMC:Lf复合凝聚体形成的胶囊具有球形外观,核心明确,能够包封97%的SIO。傅里叶红外分析证实了胶囊中SIO、CMC和Lf的存在。体外胃肠消化实验表明,SIO中β-胡萝卜素的84.31%在肠内释放,具有较高的生物可及性(67%)。此外,在食物模型中观察到菲克扩散是β-胡萝卜素释放的机制。因此,CMC:Lf复合凝聚体是一种包封和保护β-胡萝卜素用于食品强化的良好壁材。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Encapsulation of sacha inchi oil in complex coacervates formed by carboxymethylcellulose and lactoferrin for controlled release of β-carotene

Encapsulation of sacha inchi oil in complex coacervates formed by carboxymethylcellulose and lactoferrin for controlled release of β-carotene

This research studied the formation of complex coacervates formed by carboxymethylcellulose (CMC) and lactoferrin (Lf) as wall materials for encapsulation of β-carotene present in sacha inchi oil (SIO). According to zeta-potential and turbidimetric analyses, the optimum conditions for the formation of CMC:Lf complex coacervates were pH 5.0 and a 1:14 ratio. Isothermal titration calorimetry showed that the complexes were formed in two stages: first, the interaction was driven by electrostatic attraction, and second, electrostatic and other interactions (such as hydrogen bonding) or structural conformations were present. The capsules formed with CMC:Lf complex coacervates had a spherical appearance with a well-defined core and were able to encapsulate 97% of SIO. The presence of SIO, CMC, and Lf in the capsules was confirmed by Fourier transform infrared analysis. The in vitro gastrointestinal digestion of capsules showed that 84.31% of β-carotene present in SIO was released in the intestine, with high bioaccessibility (67%). Additionally, Fickian diffusion was the mechanism observed for β-carotene release in the food model. Thus, it is possible to conclude that CMC:Lf complex coacervates are good wall material for encapsulating and protecting β-carotene for food fortification.

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