溶解O2驱动的Mn单原子酶,用于对食品中的谷氨进行色度检测
Lin Wang1, Yue Wang1, Xiao-Jie Shi1
1State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, 211816, PR China.
Analytica chimica acta
|January 12, 2026
概括
一种新的单原子酶 (Mn/SAE) 能够无酶,无H2O2测定谷氨 (GSH) 的色度,以检测食品的新鲜度. 这种低成本的便携式方法提供了快速的现场分析,而不会影响稳定性或现实世界的应用性.
科学领域:
- 生物标志物检测检测生物标志物检测
- 在分析化学中使用纳米材料.
- 食品科学 食品科学 食品科学
背景情况:
- 谷氨 (GSH) 的测量对于评估食品的新鲜度至关重要.
- 现有的色度测试通常依赖于不稳定的酶或过氧化 (H2O2).
- 这些局限性阻碍了在真实食品样本中的实际应用.
研究的目的:
- 开发一种稳定,无酶,无H2O2的色度测量方法来检测谷氨.
- 创建一个适合快速,低成本,现场监测食品新鲜度的系统.
- 调整该方法用于真实食品样本,并评估其性能.
主要方法:
- 开发一种具有内在氧化酶类活性的单原子酶 (Mn/SAE).
- 使用溶解的氧气 (O2) 来氧化TMB,GSH 减少产物以进行色度读取.
- 在基于解决方案的测试和基于智能手机的分析设备 (PAD) 中实现量化.
主要成果:
- Mn/SAE系统证明了无酶和无H2O2的GSH的色度检测.
- 优化的测试在10分钟内提供了结果,显示出良好的选择性.
- 该方法在储存期间成功追踪了草中的GSH下降,在真实样本中验证了其性能.
结论:
- 建立了一种简单,低成本和便携式方法,用于现场GSH分析.
- /SAE色度计系统消除了对酶和H2O2的需求,提高了稳定性.
- 这种方法在食品新鲜度监测方面具有实用价值,并且可以扩展到其他氧化还原生物标志物.
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