食品科学

• 成分分析 • 上一篇    下一篇

果汁原浆中葡萄糖含量测定的酶电极设计

綦翠华1,李一苇2,3,张晓伟1   

  1. 1.济南大学酒店管理学院,山东 济南 250022;2.山东省科学院生物研究所,山东省生物传感器重点实验室,
    山东 济南 250014;3.济南大学化学化工学院,山东 济南 250022
  • 出版日期:2015-07-25 发布日期:2015-07-15
  • 基金资助:

    山东省自然科学基金项目(ZR2014BP015);国家自然科学基金面上项目(21375047)

Development of Enzymatic Electrode for the Detection of Glucose in Not-From-Concentrate (NFC) Fruit Juices

QI Cuihua1, LI Yiwei2,3, ZHANG Xiaowei1   

  1. 1. School of Hotel Management, University of Jinan, Jinan 250022, China; 2. Key Biosensor Laboratory of Shandong Province,
    Biology Institute of Shandong Academy of Sciences, Jinan 250014, China;
    3. School of Chemistry and Chemical Engineering, University of Jinan, Jinan 250022, China
  • Online:2015-07-25 Published:2015-07-15

摘要:

利用易于制备的水不溶性普鲁士蓝制备了介体掺入式丝网印刷电极,并以该电极作为电化学换能器制备葡萄糖氧化酶电极。电化学表征结果显示,酶电极对葡萄糖的电流响应特征良好,其线性范围为8.0 μmol/L~2.2 mmol/L,检测限达0.082 7 μmol/L(RSN=3),灵敏度为1.016 μA·L/mmol,响应时间5 s,其抗干扰性能、稳定性及重复性良好。实验还确定了该酶电极的最佳制备配方及工作条件。该电极制作简单、廉价,适用于成分复杂的果汁原浆的快速分析测试。

关键词: 果汁原浆, 葡萄糖, 丝网印刷电极, 工业应用

Abstract:

A glucose oxidase (GOx) electrode fabricated on the basis of an electron mediator bulk-modified screen-printed
electrode as an electrochemical transducer made from water-insoluble prussian blue (PB), which was easy to prepare, was
reported in this study. Electrochemical characterizations revealed that the enzyme electrode exhibited robust current response
properties. It possessed a linearity toward glucose within the range of 8.0 μmol/L–2.2 mmol/L. Its limit of detection (LOD)
was 0.082 7 μmol/L (RSN = 3), sensitivity was 1.016 μA·L/mmol, response time was 5 s and it showed satisfactory antiinterference
capability, stability and reproducibility. The formulation and working conditions of the electrode were also
optimized. This electrode is easy to prepare, economic and applicable for the rapid assay of glucose in not-from-concentrate
(NFC) fruit juices.

Key words: not-from-concentrate (NFC) fruit juices, glucose, screen-printed electrode, industrial application

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