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Selective dual-mode detection of glyphosate facilitated by iron organic frameworks nanozymes.
Huang, Ying; Wang, Jiulin; Qu, Hao; Li, Wang; Ren, Jiali; Zhong, Haiyan.
Afiliación
  • Huang Y; Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, PR China; National Engineering Research Center for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha 410004,
  • Wang J; Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, PR China; Hunan Renzhi Testing Technology Co., Ltd., Changsha 410300, PR China.
  • Qu H; Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, PR China; National Engineering Research Center for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha 410004,
  • Li W; Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, PR China; National Engineering Research Center for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha 410004,
  • Ren J; Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, PR China; National Engineering Research Center for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha 410004,
  • Zhong H; Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha 410004, PR China; National Engineering Research Center for Deep Process of Rice and Byproducts, Central South University of Forestry and Technology, Changsha 410004,
Spectrochim Acta A Mol Biomol Spectrosc ; 319: 124561, 2024 Oct 15.
Article en En | MEDLINE | ID: mdl-38833884
ABSTRACT
To satisfy the public's urgent demand for food safety and protect the ecological environment, sensitive detection of glyphosate holds paramount importance. Here, we discovered that glyphosate can engage in specific interactions with iron organic frameworks (Fe-MOFs) nanozymes, enabling a selective detection of glyphosate. Based on this principle, an innovative colorimetric and fluorescent dual-mode detection approach was devised. Specifically, Fe-MOFs were synthesized at room temperature, exhibiting remarkable peroxidase-mimic activity. These nanozymes catalyze the conversion of colorless and fluorescent 3,3',5,5'-Tetramethylbenzidine (TMB) into blue oxidized and nonfluorescent TMB (oxTMB) in the presence of H2O2. However, the introduction of glyphosate disrupts this process by interacting with Fe-MOFs, significantly inhibiting the catalytic activity of Fe-MOFs through both physical (electrostatic and hydrogen bonding) and chemical interactions. This suppression further hindered the conversion of TMB to oxTMB, resulting in a reduction in absorbance and a corresponding enhancement in fluorescence. The method offers a colorimetric and fluorescence dual-mode detection capability with enhanced applicability. Notably, our approach avoids complex material modifications and is more stable and cost-effective than the traditional enzyme inhibition methods. This innovative detection technique holds immense potential for practical applications and provides a fresh perspective for the detection of pesticide residues.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Espectrometría de Fluorescencia / Colorimetría / Estructuras Metalorgánicas / Glifosato / Glicina / Hierro Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Espectrometría de Fluorescencia / Colorimetría / Estructuras Metalorgánicas / Glifosato / Glicina / Hierro Idioma: En Revista: Spectrochim Acta A Mol Biomol Spectrosc Asunto de la revista: BIOLOGIA MOLECULAR Año: 2024 Tipo del documento: Article Pais de publicación: Reino Unido