Enzymatic bimetallic Cu-Ni micromotor sensor for xanthine detection

IF 5.3 2区 农林科学 Q1 ENGINEERING, CHEMICAL Journal of Food Engineering Pub Date : 2024-11-07 DOI:10.1016/j.jfoodeng.2024.112382
Elif Muslu Yilmaz, Basak Dag, Ismihan Killioglu, Esin Eren, Aysegul Uygun Oksuz
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Abstract

Enzymatic bimetallic Cu-Ni micromotors modified screen-printed electrodes were designed for the determination of xanthine. The bimetallic Cu-Ni micromotors were prepared by electrochemical template deposition. Morphological and structural characterization revealed that the smaller size and active mobility of the particles contribute to a larger specific surface area. The increase in surface area enhances electro-catalytic activities and sensitivity. These improved properties enable the newly created xanthine oxidase-modified Cu-Ni micromotors to function effectively as a high-performance sensor. Designed specifically for detecting xanthine, this sensor boasts high sensitivity, a broad measurement range, low detection limits, and excellent reproducibility and stability. The enzymatic bimetallic micromotor-based sensor was also successfully employed to measure xanthine levels. The limits of detection were determined to be 15.7 nM and 21.53 μM for xanthine concentration ranges of 0.1 μM–1 μM and 10 μM–300 μM, respectively, based on electrochemical signals under a magnetic field. Besides, the detection limit was calculated as 9.02 μM for xanthine concentrations ranging from 0.3 μM to 20 μM, based on the speed of the micromotors under a magnetic field (S/N = 3). The impressive results highlight the significant potential of bimetallic Cu-Ni micromotors as sensors, suggesting their promising applications in monitoring food freshness and enhancing security technology.

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用于检测黄嘌呤的酶促双金属铜镍微电机传感器
设计了用于测定黄嘌呤的酶促双金属铜镍微阳极改性丝网印刷电极。双金属铜镍微阳极是通过电化学模板沉积法制备的。形态和结构表征显示,颗粒尺寸更小,活性流动性更高,因此比表面积更大。表面积的增加提高了电催化活性和灵敏度。这些改进的特性使新制成的黄嘌呤氧化酶修饰铜镍微电导能够有效地发挥高性能传感器的功能。这种传感器专为检测黄嘌呤而设计,具有灵敏度高、测量范围宽、检测限低、重现性和稳定性好等特点。基于酶的双金属微电机传感器也被成功用于测量黄嘌呤含量。根据磁场下的电化学信号,在黄嘌呤浓度范围为 0.1 μM-1 μM 和 10 μM-300 μM 时,检测限分别为 15.7 nM 和 21.53 μM。此外,根据磁场下微电机的速度(信噪比为 3),计算出黄嘌呤浓度从 0.3 μM 到 20 μM 的检测限为 9.02 μM。这些令人印象深刻的结果凸显了铜镍双金属微电机作为传感器的巨大潜力,表明它们在监测食品新鲜度和提高安全技术方面的应用前景广阔。
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来源期刊
Journal of Food Engineering
Journal of Food Engineering 工程技术-工程:化工
CiteScore
11.80
自引率
5.50%
发文量
275
审稿时长
24 days
期刊介绍: The journal publishes original research and review papers on any subject at the interface between food and engineering, particularly those of relevance to industry, including: Engineering properties of foods, food physics and physical chemistry; processing, measurement, control, packaging, storage and distribution; engineering aspects of the design and production of novel foods and of food service and catering; design and operation of food processes, plant and equipment; economics of food engineering, including the economics of alternative processes. Accounts of food engineering achievements are of particular value.
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