一个敏感的色度传感器用于检测基于Cu,Fe-PMs的脱酸盐,具有类似过氧化酶的活性
Yaohong Gu1, Qiulan Li1, Dezhi Yang1
1Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, 650500, Yunnan, People's Republic of China.
Mikrochimica acta
|June 26, 2025
概括
铜和铁合的聚酸纳米酶 (Cu,Fe-PMs) 显示出增强的过氧化酶类活性. 这使得灵敏的色度传感器能够高精度地检测食品中的脱乙酸盐 (DHA).
科学领域:
- 纳米材料科学 科学 纳米材料科学
- 分析化学 分析化学
- 催化剂是一种催化剂.
背景情况:
- 类似过氧酶的纳米酶对于生物传感应用至关重要.
- 聚酸盐纳米酶 (PMs) 显示出有前途的催化活性.
- 提高纳米酶活性和稳定性是提高传感器性能的关键.
研究的目的:
- 开发一种新型的聚酸盐纳米酶,添加铜和铁 (Cu,Fe-PMs).
- 为了研究脱乙酸盐 (DHA) 对纳米酶的过氧化酶类活性的协同效应.
- 建立一个灵敏可靠的色度传感器,用于在食品中检测DHA.
主要方法:
- 一步式微波消化合成Cu,Fe-PMs.
- 通过使用3,3',5,5'-四甲基 (TMB) 和H2O2.2,评估类似过氧酶的活性.
- 研究DHA对催化活性和反应机制的影响.
- 开发一种基于652 nm的吸收变化的色度传感器.
主要成果:
- ,Fe-PMs表现出优异的过氧化酶类活性.
- 通过复杂的形成,DHA显著提高了Cu,Fe-PMs的POD类活性.
- 传感器实现了宽线性范围 (0.0017-2.5μg mL-1) 和低检测极限 (0.83 ng mL-1).
- 在真实食品样本分析中,传感器显示出高精度和可重复性 (恢复率为91.59%-103.35%,RSD ≤3.64%).
结论:
- DHA的协同作用通过提高基质亲和力和加速氧化还原循环来提高Cu,Fe-PMs的催化效率.
- 成功开发了一种对食品中DHA的高度敏感和可靠的色度传感器.
- 开发的传感器为食品安全和质量控制提供了一个有前途的分析工具.
相关概念视频
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