您好，欢迎访问上海市农业科学院 机构知识库！
上海市农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Bimodal single-atom iron nanozyme biosensor for volatile amine and food freshness detection

文献类型： 外文期刊

作者： Song, Guangchun 1 ; Zhang, Zedong 3 ; Fauconnier, Marie-Laure 2 ; Li, Cheng 1 ; Chen, Li 1 ; Zheng, Xiaochun 1 ; Zhang, Dequan 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Food Sci & Technol, Key Lab Agroprod Qual & Safety Control Storage & T, Minist Agr & Rural Affairs, Beijing 100193, Peoples R China

2.Univ Liege, Lab Chem Nat Mol, Gembloux Agrobio Tech, Passage Deportes 2, B-5030 Gembloux, Belgium

3.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

关键词： Single-atom iron nanozyme; Peroxide-like enzymes; Freshness; Dual-signal biosensor; Food safety

期刊名称：NANO TODAY （ 影响因子：17.4； 五年影响因子：17.9 ）

ISSN： 1748-0132

年卷期： 2023 年 53 卷

页码：

收录情况： SCI

摘要： Volatile amines (VAs) play a critical role in detecting the freshness of meat. However, the development of nondestructive, real-time, and portable techniques for monitoring VAs remains a challenge. Here, we successfully created a colorimetric-fluorescent dual-signal biosensor for meat freshness detection by using a single-atom iron nanozyme (SAFe-N-C nanozyme) and carbon quantum dots (CDs). The SAFe-N-C nanozyme with high peroxidase-like (POD-like) activity (40.22 U/mg) acts as a catalyst by facilitating the conversion of the colourless reduced state 3,3 ',5,5 '-tetramethylbenzidine (redTMB) to its oxidized product (oxTMB). Subsequently, the fluorescence signal of the CDs is quenched due to the inner filtering effect (IFE) between oxTMB and CDs. During food spoilage, the generation of VAs results in the reduction of oxTMB, which subsequently recovers the fluorescence of the CDs. As a result, the limits of detection (LOD) for ammonia detection are 0.9840 ppm and 0.0838 ppm within a linear range of 0.5-50 ppm. This colorimetric-fluorescent dual-signal biosensor effectively detects VAs during the spoilage of livestock and poultry meat in a nondestructive and real-time manner. This innovative work overcomes the limitation of single signal output and provides a portable and reliable method for VAs detection, proving to be a significant advancement in meat freshness assessment.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：上海市农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台