Hydrolyzed rice glutelin nanoparticles as particulate emulsifier for Pickering emulsion: Structure, interfacial properties, and application for encapsulating curcumin

皮克林乳液 石英晶体微天平 化学工程 乳状液 纳米颗粒 水解 材料科学 姜黄素 吸附 化学 色谱法 纳米技术 有机化学 生物化学 工程类
作者
Zhenyu Yang,Jiakai Yan,Yanhua Duan,Lei Dai,Yanfei Wang,Qingjie Sun,David Julian McClements,Xingfeng Xu
出处
期刊:Food Hydrocolloids [Elsevier BV]
卷期号:134: 108105-108105 被引量:63
标识
DOI:10.1016/j.foodhyd.2022.108105
摘要

Oil-in-water Pickering emulsions prepared by food-grade particles have gained increasing interest on account of their potential application in the delivery system for lipophilic active compounds. In this project, hydrolyzed rice glutelin (HRG) nanoparticles were successfully fabricated inducing by different concentrations of ethanol. The structure, interfacial properties of HRG nanoparticles, Pickering emulsion stability and in vitro gastrointestinal digestion characteristics were investigated. With ethanol concentration increasing from 25% to 100%, the Z-average diameter and surface activity of HRG nanoparticles increased firstly and then decreased, whereas the magnitudes of the ζ-potential and surface hydrophobicity increased. Quartz crystal microbalance with dissipation (QCM-D) indicated that HRG nanoparticles induced by ethanol with the concentration of 50% (HRG50) and 75% (HRG75) showed a more viscous interfacial film. HRG50- and HRG70-stabilized emulsions had better storage stability compared with other samples. Furthermore, the curcumin was loaded into Pickering emulsions using the pH-shift method. The light stability and gastrointestinal fate were assessed. Compared with curcumin-loaded HRG75-Pickering emulsion, HRG50-Pickering emulsion exhibited higher photochemical stability, whereas the lower FFAs release, bioaccessibility and transformation. This behavior was attributed to the thicker interfacial layer for HRG50 Pickering emulsion. This knowledge indicated that emulsion stabilized by HRG nanoparticles could be used as a delivery system to protect hydrophobic bioactive compounds. This research provided theoretical support to develop the utilization of HRG nanoparticles.
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