Tracking the dissolution behavior of zinc oxide nanoparticles in skimmed milk powder solutions
Tracking the dissolution behavior of zinc oxide nanoparticles in skimmed milk powder solutions
复制标题
跟踪氧化锌纳米粒子在脱脂奶粉溶液中的溶解行为
DOI：
10.1016/j.foodchem.2021.130520
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发表时间：
2021-07-10
期刊：
影响因子：
8.8
通讯作者：
Liu, Jingfu
中科院分区：
文献类型：
--
作者：
Tan, Zhiqiang;Chen, Qiang;Liu, Jingfu
纳米氧化锌因其优异的营养功能而被推荐作为食品添加剂。因此，了解其在食品样品中的全面信息和稳定性是非常必要的。然而，ZnO纳米颗粒在复杂食品基质中的表征仍然是一个巨大的挑战，限制了对其在食品储存过程中转化的深入了解。在这项研究中，中空纤维流场流分馏相结合的紫外-可见吸收光谱和电感耦合等离子体发射光谱，以评估氧化锌纳米粒子在脱脂奶粉溶液中的溶解行为，通过监测残留的氧化锌纳米粒子和溶解的Zn（II）离子的量的变化。这两种锌物种在脱脂奶粉溶液中的同时表征，而不需要繁琐的样品预处理，实现了在脱脂奶粉溶液中的ZnO纳米颗粒的溶解具有时间和温度依赖性的行为。
Zinc oxide nanoparticles (ZnO NPs) are recently recommended as food additives owing to their outstanding nutritive function. Therefore, understanding their comprehensive information and stability in food samples is highly necessitated. However, the characterization of ZnO NPs in the complex food matrices remains a great challenge, limiting an in-depth understanding of their transformation during food storage. In this study, the hollow fiber flow field-flow fractionation was combined with UV-Vis absorption spectroscopy and inductively coupled plasma optical emission spectroscopy to assess the dissolution behaviors of ZnO NPs in skimmed milk powder solutions by monitoring the changes in the residual ZnO NPs and the amount of dissolved Zn(II) ions. The simultaneous characterization of these two Zn species in skimmed milk powder solutions was achieved without the need for tedious sample pretreatments, and the dissolution of ZnO NPs in skimmed milk powder solutions had time- and temperature-dependent behaviors.