Rheological aspects in fabricating pullulan-whey protein isolate emulsion suitable for electrospraying: Application in improving β-carotene stability
Rheological aspects in fabricating pullulan-whey protein isolate emulsion suitable for electrospraying: Application in improving β-carotene stability
复制标题
制造适合电喷雾的支链淀粉-乳清蛋白分离乳液的流变学方面：在提高β-胡萝卜素稳定性中的应用
DOI：
10.1016/j.lwt.2020.109581
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发表时间：
2020-07-01
影响因子：
6
通讯作者：
Sun, Peilong
中科院分区：
文献类型：
--
作者：
Niu, Ben;Shao, Ping;Sun, Peilong
β-胡萝卜素已被用作食品着色剂和功能成分，但由于其稳定性较差，其应用受到限制。这项工作的目的是通过将β-胡萝卜素包裹在电喷雾颗粒中来提高其稳定性。研究了普鲁兰多糖溶液的电流体动力学行为，考察了不同温度和相对湿度下包封率和核壁比对β-胡萝卜素稳定性的影响。聚合物溶液的比粘度随着浓度的增加而线性增加，直至5%w/w浓度。普鲁兰多糖的临界缠结浓度为4.58%wt。在所研究的不同浓度的普鲁兰多糖溶液中，3%w/w的普鲁兰多糖溶液得到了球形、单分散的纳米粒子。核壁比为1：50的电喷雾粒子包封率最高。贮藏14d内，β-胡萝卜素的损失速率符合一级反应动力学，14d后表现为扩散受限模式。随着温度和相对湿度的降低，β-胡萝卜素在电喷雾颗粒中的滞留速度明显加快。本研究为提高β-胡萝卜素稳定性的电喷雾粒子的制备提供了一种策略。
Beta-carotene has been used as a food colorant and functional ingredient, but these applications are limited due to its poor stability. The aim of this work was to improve the stability of beta-carotene by encapsulating it in electrosprayed particles. The electrohydrodynamic behavior of pullulan solution was studied and the influence of encapsulation and core-to-wall ratio on the stability of beta-carotene at different temperatures and relative humidity were investigated. The specific viscosity of the polymer solution increased linearly with the concentration until 5% w/w concentration. The critical entanglement concentration of the pullulan was found to be 4.58% wt. Among the various concentrations of pullulan studied, 3% w/w pullulan solution yielded spherical, monodisperse nanoparticles. Electrosprayed particles with 1:50 core-to-wall ratio had highest encapsulation efficiency. The rate of beta-carotene loss displayed first order reaction kinetic within 14 days, while displayed diffusion limited mode after 14 days storage. The retention of beta-carotene from the electrosprayed particles accelerated markedly with decreasing temperatures and relative humidity. This study provides a strategy for the preparation of promising electrosprayed particles to improve the stability of beta-carotene.