Zirconium Based Metal Organic Framework Embedded Carrageenan Composite: An Efficient Electrochemical Platform for Rutin Detection

Rutin (Ru), one of the significant flavonoid glycosides found in many plants, has many important biological properties such as antibacterial, anti‐inflammatory, analgesic, anti‐radiation, anti‐oxidation, and anti‐myocardial hypoxia properties, as well as lowering serum cholesterol, diuresis, spasmolysis, and preventing platelet aggregation. It is also found in many fruits and vegetables and has anticancer ability. As a result of this, its detection is necessary, and so here in this work we proposed a zirconium‐based metal organic framework (UiO‐66) coupled with carrageenan (CG) composite (UiO‐66@CG) for the electrochemical detection of Ru. Initial characterizations XRD and FTIR revealed the successful composite formation, while the SEM study showed the surface morphology which clearly exhibited the CG attached with UiO‐66. Preliminary electrochemical characterizations demonstrated the composite's excellent redox process over the other pristine UiO‐66 and CG modified electrodes. SWV demonstrated the UiO‐66@CG composite's sensitivity toward Ru for a wide linear range 200 nM –1.5 mM, with detection limit as 62 nM. Other studies, like selectivity, stability, and reproducibility, also displayed good result which also portraits the composites efficiency. Finally, the real sample analysis in apple and onion extracts also showed satisfactory recovery percentages in unspiked manner which also demonstrates its efficiency for real time detection. Considering all these, the proposed UiO‐66@CG based electrochemical platform could be used for device fabrication as handy sensors in food and industrial sectors for instant Ru detection.