Portable metal-organic framework alginate beads for high-sensitivity fluorescence detection and effective removal of residual pesticides in fruits and vegetables

Wenwen Jia; Ruiqing Fan; Jian Zhang; Ziqi Geng; Pengxiang Li; Jiakai Sun; Shuang Gai; Ke Zhu; Xin Jiang; Yulin Yang

doi:10.1016/j.foodchem.2022.132054

Portable metal-organic framework alginate beads for high-sensitivity fluorescence detection and effective removal of residual pesticides in fruits and vegetables

Food Chem. 2022 May 30:377:132054. doi: 10.1016/j.foodchem.2022.132054. Epub 2022 Jan 4.

Authors

Wenwen Jia¹, Ruiqing Fan², Jian Zhang¹, Ziqi Geng¹, Pengxiang Li¹, Jiakai Sun¹, Shuang Gai¹, Ke Zhu¹, Xin Jiang¹, Yulin Yang³

Affiliations

¹ MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, PR China.
² MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, PR China. Electronic address: fanruiqing@hit.edu.cn.
³ MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, Heilongjiang 150001, PR China. Electronic address: ylyang@hit.edu.cn.

PMID: 35008021
DOI: 10.1016/j.foodchem.2022.132054

Abstract

Pesticides have been emerged as major organic pollutants in environment, owing to widely spread and intrinsic high toxicity in agricultural productivity. Herein, we designed and synthesized a practicability and portable metal-organic framework (MOF) based composite beads MOF-alginate-Ca²⁺-polyacrylic acid (kgd-M1@ACPs) consist of biocompatible host material (sodium alginate) and fluorescent center with blue emission (where kgd-M1 stands for {[Cd(tbia)·H₂O]·2H₂O}_n), which was further developed for high-efficiency and naked-eye 2,6-dichloro-4-nitroaniline (DCN) monitoring in fruits and vegetables. Significantly, the kgd-M1@ACPs shows obvious fluorescent quench towards toxic pesticide DCN with a low limit of detection (LOD) of 0.09 μM and high recovery from 98.08 to 104.37%. Moreover, the kgd-M1@ACPs also presents an excellent DCN adsorption ability. This work demonstrates that smart material kgd-M1@ACPs is expected to be a good candidate for detection and removal of DCN in real fruits and vegetables, which will present a broad prospect for monitoring and treating pesticides.

Keywords: Fluorescence detection; Fruit and vegetable sample analysis; MOF based composites; Naked-eye monitor; Pesticide treatment.

MeSH terms

Alginates
Fruit
Metal-Organic Frameworks*
Pesticides*
Vegetables

Substances

Alginates
Metal-Organic Frameworks
Pesticides