文献类型：期刊文献

英文题名：Impact of Whey Protein Corona Formation around TiO₂ Nanoparticles on Their Physiochemical Properties and Gastrointestinal Fate

作者：Shan, Honghong[1,2];Guo, Ying[1];Li, Jin[2];Liu, Zimo[1];Chen, Shaoqin[1];Dashnyam, Badamkhand[2];Mcclements, David Julian[3];Cao, Chongjiang[2];Xu, Xiao[1];Yuan, Biao[2]

机构：[1]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Zhejiang, Peoples R China;[2]China Pharmaceut Univ, Natl R&D Ctr Chinese Herbal Med Proc, Coll Engn, Dept Food Qual & Safety, Nanjing 211198, Jiangsu, Peoples R China;[3]Univ Massachusetts, Dept Food Sci, Amherst, MA 01003 USA

年份：2024

卷号：72

期号：9

起止页码：4958

外文期刊名：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:001175734700001)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (31901699, 32302040), the Natural Science Foundation of Zhejiang Province, China (LQ21C200003), the Fundamental Research Funds for the Central Universities (2632021ZD01), and National Innovation and Entrepreneurship Training Program for Undergraduate (2023103161351, 202310316095Y).

语种：英文

外文关键词：titanium dioxide; proteincorona; whey protein; simulated gastrointestinaldigestion; fermentation; gut microbiota

外文摘要：Previously, we found that whey proteins form biomolecular coronas around titanium dioxide (TiO2) nanoparticles. Here, the gastrointestinal fate of whey protein-coated TiO2 nanoparticles and their interactions with gut microbiota were investigated. The antioxidant activity of protein-coated nanoparticles was enhanced after simulated digestion. The structure of the whey proteins was changed after they adsorbed to the surfaces of the TiO2 nanoparticles, which reduced their hydrolysis under simulated gastrointestinal conditions. The presence of protein coronas also regulated the impact of the TiO2 nanoparticles on colonic fermentation, including promoting the production of short-chain fatty acids. Bare TiO2 nanoparticles significantly increased the proportion of harmful bacteria and decreased the proportion of beneficial bacteria, but the presence of protein coronas alleviated this effect. In particular, the proportion of beneficial bacteria, such as Bacteroides and Bifidobacterium, was enhanced for the coated nanoparticles. Our results suggest that the formation of a whey protein corona around TiO2 nanoparticles may have beneficial effects on their behavior within the colon. This study provides valuable new insights into the potential impact of protein coronas on the gastrointestinal fate of inorganic nanoparticles.