Photocatalytic rice bran protein/carboxymethyl cellulose/ZrO2 fiber produced by microfluidics: Formation mechanism, bacteriostasis and strawberry preservation

IF 5.4 2区医学 Q2 MATERIALS SCIENCE, BIOMATERIALS

ACS Biomaterials Science & Engineering Pub Date : 2024-11-12 DOI:10.1016/j.foodchem.2024.142022

Ren Li, Wenhao Ma, Yulin Feng, Mengmeng Zhang, Huijuan Zhang, Jing Wang

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引用次数: 0

Abstract

Developing cost-effective and environmentally sustainable active packaging materials remains an important challenge. We have developed rice bran protein (RBP)-based fibers incorporating carboxymethyl cellulose (CMC) and ZrO₂ nanoparticles (ZrO₂ NPs, 0 %–7 %, m/m) using microfluidic spinning. The integration of RBP, CMC, and ZrO₂ NPs formed a robust hydrogen bond network that enhanced the fibers' thermal stability and crystallinity, reduced surface hydrophobicity, and aligned the molecular orientation. Under the catalysis of visible light (300 W, 12 h), ZrO₂ NPs in the fiber produced reactive oxygen species, which inhibited the oxidative stress resistance system of Bacillus subtilis and destroyed its biofilm and DNA, thus showing excellent antibacterial effect. Additionally, during storage, this fiber also showed the ability to scavenge ethylene, thereby reducing the rate of loss of luminance, hardness and weight of strawberries. This study offers a new idea for RBP fiber in food preservation, antibacterial, and value-added utilization of rice bran by-products.

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利用微流体技术生产的光催化米糠蛋白/羧甲基纤维素/ZrO2 纤维：形成机制、抑菌和草莓保鲜

开发具有成本效益和环境可持续性的活性包装材料仍然是一项重要挑战。我们利用微流体纺丝技术开发了基于米糠蛋白（RBP）的纤维，其中包含羧甲基纤维素（CMC）和 ZrO2 纳米粒子（ZrO2 NPs，0 %-7 %，m/m）。RBP、CMC 和 ZrO2 NPs 的结合形成了强大的氢键网络，增强了纤维的热稳定性和结晶性，降低了表面疏水性，并使分子取向一致。在可见光（300 W，12 h）的催化下，纤维中的 ZrO2 NPs 产生活性氧，抑制枯草芽孢杆菌的氧化应激抵抗系统，破坏其生物膜和 DNA，从而显示出卓越的抗菌效果。此外，在贮藏过程中，这种纤维还能清除乙烯，从而降低草莓亮度、硬度和重量的损失率。这项研究为米糠副产品中的 RBP 纤维在食品保鲜、抗菌和增值利用方面提供了新的思路。

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来源期刊

ACS Biomaterials Science & Engineering Materials Science-Biomaterials

CiteScore

10.30

自引率

3.40%

发文量

413

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