包装与食品机械2025，Vol.43Issue(3)：12-21,10.DOI:10.3969/j.issn.1005-1295.2025.03.002
基于纳米氧化铈催化的草鱼新鲜度监测标签的制备与研究
Preparation and research on grass carp freshness monitoring label based on cerium oxide nanoparticle catalysis
摘要
Abstract
To monitor grass carp freshness,intelligent labels were prepared using agar and sodium carboxymethyl cellulose as matrices,cerium oxide nanoparticles as enzymatic catalysts,and 3,3ʹ,5,5ʹ-tetramethylbenzidine as indicator at varying CeO2 concentrations.Morphology,enzymatic catalytic activity,thermal stability,and mechanical properties of the labels were characterized.Results showed that at 0.5%mass fraction of CeO2 nanoparticles,the label exhibited uniform and dense surface,optimal enzymatic catalytic capacity,excellent thermal stability,tensile strength of 27.4 MPa,and elongation at break of 15%,representing the best comprehensive performance.During grass carp spoilage monitoring,hypoxanthine content increased from 0.21 mg/(10 g)to 2.36 mg/(10 g),while the label changed from colorless to blue with effective response.This study provides references for real-time aquatic product freshness monitoring.关键词
氧化铈纳米颗粒/琼脂/羧甲基纤维素钠/次黄嘌呤/智能标签Key words
cerium oxide nanoparticles/agar/sodium carboxymethyl cellulose/hypoxanthine/intelligent label分类
轻工纺织引用本文复制引用
王琨,王桂英..基于纳米氧化铈催化的草鱼新鲜度监测标签的制备与研究[J].包装与食品机械,2025,43(3):12-21,10.基金项目
国家自然科学基金项目(32071692) （32071692）
黑龙江省自然科学基金项目(LH2021C016) （LH2021C016）
东北林业大学大学生创新创业项目(DC-2025) （DC-2025）
