| Title : Enzyme-mediated Ru@UiO-66@MnO(2) NSs\/thiamine-based ratiometric fluorescence sensor for visual detection of organophosphorus pesticide residues - Tong_2023_Food.Chem_429_136945 |
| Author(s) : Tong F , Yang Z , Wang Z , Liu W , Jiang W , Zhu L , Wang L , Zheng M , Hou R , Zhou Y , Liu Y |
| Ref : Food Chem , 429 :136945 , 2023 |
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Abstract :
In view of the potential hazards of organophosphorus pesticides (OPs), this paper constructed a ratiometric fluorescent probe utilizing a functionalized metal-organic framework to detect OPs. Ru(bpy)(3)Cl(2) was encapsulated inside UiO-66 as a reference signal, and MnO(2) nanosheets (MnO(2) NSs) were grown on the surface to obtain Ru@UiO-66@MnO(2) NSs. Acetylcholinesterase catalyzed the decomposition of acetylcholine into reductive thiocholine, which consumed MnO(2) NSs, thus restoring the Ru@UiO-66 fluorescence. Due to the enzymatic inhibition of OPs and the redox reaction between MnO(2) NSs and thiamine, this probe emitted blue fluorescence in the presence of OPs. The probe achieved linear responses to dichlorvos and chlorpyrifos with LODs of 9.99 x 10(-6) microg mL(-1) and 9.99 x 10(-5) microg mL(-1). The probe exhibited a satisfactory recovery rate for OPs in green tea. Furthermore, a hydrogel detection platform was developed by embedding the probe into sodium alginate. Overall, this work provides a visual approach to detect OPs in agricultural products. |
| PubMedSearch : Tong_2023_Food.Chem_429_136945 |
| PubMedID: 37487398 |
Tong F, Yang Z, Wang Z, Liu W, Jiang W, Zhu L, Wang L, Zheng M, Hou R, Zhou Y, Liu Y (2023)
Enzyme-mediated Ru@UiO-66@MnO(2) NSs\/thiamine-based ratiometric fluorescence sensor for visual detection of organophosphorus pesticide residues
Food Chem
429 :136945
Tong F, Yang Z, Wang Z, Liu W, Jiang W, Zhu L, Wang L, Zheng M, Hou R, Zhou Y, Liu Y (2023)
Food Chem
429 :136945