Ultrasound-assisted shear homogenization for preparing chitin nanocrystal-stabilized Pickering emulsions

IF 9.8 1区农林科学 Q1 CHEMISTRY, APPLIED

Food Chemistry Pub Date : 2025-10-03 DOI:10.1016/j.foodchem.2025.146642

Yimeng Lou, Te Yu, Binyan Zeng, Muhammad Moeid Khan, Nikolai Kuhnert, Ok-Hwan Lee, Xing Fu

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Abstract

Chitin nanocrystals (ChNs) have the potential for stabilizing Pickering emulsions. This study compares the effects of ultrasound-assisted shear homogenization and shear homogenization alone on Chitin Nanocrystals (ChNs)-based Pickering emulsions. Ultrasound-assisted shear homogenization produced positively charged emulsions with a 5–7 μm droplet size and improved stability. The separation index of emulsions after storage decreased from 60.7 % (shear homogenization alone) to 17.8 % with ultrasound treatment. Emulsions prepared with ultrasound-assisted shear homogenization exhibited higher zeta potential, viscosity, and storage modulus than those prepared by shear homogenization alone. The mechanism involves forming a weak flocculating network, enhancing stabilization and gel-like behavior. Optical microscopy and CLSM analysis showed that ultrasound treatment reduced droplet size and prevented phase separation. In conclusion, ultrasound-assisted shear homogenization significantly enhances the stability of ChNs-based emulsions, providing a theoretical foundation for food science applications.

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超声辅助剪切均质制备几丁质纳米晶稳定皮克林乳状液

几丁质纳米晶体（ChNs）具有稳定皮克林乳剂的潜力。本研究比较了超声辅助剪切均质和单独剪切均质对几丁质纳米晶皮克林乳状液的影响。超声辅助剪切均质制备出5-7 μm的正电荷乳状液，并提高了稳定性。经超声处理后，乳状液的分离率由单纯剪切均质法的60.7 %下降到17.8 %。超声辅助剪切均质制备的乳液比单独剪切均质制备的乳液具有更高的zeta电位、粘度和存储模量。其机理包括形成弱絮凝网络，增强稳定性和凝胶状行为。光学显微镜和CLSM分析表明，超声处理减小了液滴尺寸，阻止了相分离。综上所述，超声辅助剪切均质可显著提高乳剂的稳定性，为食品科学应用提供理论基础。

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来源期刊

Food Chemistry 工程技术-食品科技

CiteScore

16.30

自引率

10.20%

发文量

3130

审稿时长

122 days

期刊介绍： Food Chemistry publishes original research papers dealing with the advancement of the chemistry and biochemistry of foods or the analytical methods/ approach used. All papers should focus on the novelty of the research carried out.