一种灵敏的 Fe3O4@MnO2 纳米催化剂，用于目测果汁中的总抗氧化能力

IF 4.9 2区化学 Q1 CHEMISTRY, ANALYTICAL

Microchemical Journal Pub Date : 2024-09-24 DOI:10.1016/j.microc.2024.111709

Hong Chen , Junyan Liu , Mengna Wan , Shangyi Zhao , Xiaolong Li , Chuan Liu , Xuanping Zhao , Junjie Li , Qingzhen Ma , Cuixiang Li , Xueqin Wang

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引用次数: 0

摘要

果汁是一种风靡全球的饮料食品，其总抗氧化能力（TAC）通常被视为人们合理膳食的一项重要指标，因此准确评估其总抗氧化能力对指导人类健康至关重要。在此，我们构建了一种灵敏的Fe3O4@MnO2纳米催化剂，该催化剂由磁铁矿纳米颗粒（Fe3O4 NPs）和二氧化锰（MnO2）纳米壳封装而成，可用于果汁中总抗氧化能力的快速准确比色分析。数据显示，制备的 Fe3O4@MnO2 纳米催化剂具有显著的氧化酶模拟活性，无需额外的 H2O2 即可催化比色底物的氧化，抗坏血酸（AA）的检测限（LOD）约为 0.39 μM。将制备的 Fe3O4@MnO2 纳米催化剂应用于商业果汁产品中，可对 TAC 进行可靠的直观评估和准确分析。此外，由于其固有的超顺磁性，制备的 Fe3O4@MnO2 纳米催化剂很容易回收利用。总之，一种智能型 Fe3O4@MnO2 纳米催化剂的研制成功为果汁中 TAC 的可视化分析提供了便利，并将在未来得到广泛应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

A sensitive Fe3O4@MnO2 nanocatalyst designed for visual determination of total antioxidant capacity in fruit juice

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A sensitive Fe3O4@MnO2 nanocatalyst designed for visual determination of total antioxidant capacity in fruit juice

Fruit juice is kind of popular beverage food worldwidely, and its total antioxidant capacity (TAC) is generally considered as an important index for people’s rational diet, thus accurate evaluation of its TAC is essential for human health guidance. Herein, we constructed a sensitive Fe₃O₄@MnO₂ nanocatalyst that was delicately cored with magnetite nanoparticles (Fe₃O₄ NPs) and encapsulated with manganese dioxide (MnO₂) nanoshells for fast and accurate TAC colorimetric analysis in fruit juice. The data showed the fabricated Fe₃O₄@MnO₂ nanocatalysts performed with remarkable oxidase mimetic activities and could catalyze oxidization of colorimetric substrate without additional H₂O₂, and the limit of detection (LOD) was about 0.39 μM for ascorbic acid (AA) evaluation. Applied in commercial fruit juice products, the fabricated Fe₃O₄@MnO₂ nanocatalysts showed a reliable and visual assessment for the accurate TAC analysis. In addition, the fabricated Fe₃O₄@MnO₂ nanocatalysts could be easily recycled due to their intrinsic superparamagnetic property. Together, an intellegent Fe₃O₄@MnO₂ nanocatalyst was well developed for visual TAC analysis in fruit juice with convenient applications in future.

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来源期刊

Microchemical Journal 化学-分析化学

CiteScore

8.70

自引率

8.30%

发文量

1131

审稿时长

1.9 months

期刊介绍： The Microchemical Journal is a peer reviewed journal devoted to all aspects and phases of analytical chemistry and chemical analysis. The Microchemical Journal publishes articles which are at the forefront of modern analytical chemistry and cover innovations in the techniques to the finest possible limits. This includes fundamental aspects, instrumentation, new developments, innovative and novel methods and applications including environmental and clinical field. Traditional classical analytical methods such as spectrophotometry and titrimetry as well as established instrumentation methods such as flame and graphite furnace atomic absorption spectrometry, gas chromatography, and modified glassy or carbon electrode electrochemical methods will be considered, provided they show significant improvements and novelty compared to the established methods.