Determination of luteolin in Chrysanthemum tea with a ultra-sensitive electrochemical sensor based on MoO3/poly(3,4-ethylene dioxythiophene)/gama-cyclodextrin metal–organic framework composites

Chen, Xiaoling; Li, Jiaodi; Li, Jiao; Zhang, Li; Zhao, Pengcheng; Wang, Chenxi; Fei, Junjie

doi:10.1016/j.foodchem.2022.133723

Cited by 30 publications

(6 citation statements)

References 41 publications

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“…An example is the voltammetric determination of the flavone luteolin in real samples of Chrysanthemum, a flower with a well-known history in traditional Chinese and Korean medicine, used for the treatment of inflammation, hypertension and respiratory diseases. Different designs for the development of electrochemical sensors have been employed: (i) a GCE modified by MWCNTs and IL 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF6) nanocomposite that showed an LOD of 0.5 nM in the linear range from 5 nM to 1 µM [122]; (ii) a GCE modified by MWCNTs and poly(crystal violet) (PCV) that showed an LOD of 5 nM in the linear range from 0.02 nM to 70 µM [123]; (iii) an Au/Pd/rGO nanofilm-modified GCE that showed an LOD of 0.98 nM in the linear range from 0.01 to 80.0 µM; (iv) a GCE modified by a MoO 3 , PEDOT and CD-MOF nanocomposite that showed an LOD of 0.1 nM in the linear range from 0.0004 to 1.8 µM [127]; (v) a GCE modified by a zirconium MOF UiO-66/rGO composite that showed the LOD of 0.75 nM in the linear range from 0.001 µM to 20 µM [128]; and (vi) a GCE modified by ZIF-derived cobalt trioxide at N-doped CNTs and NH 2 -functionalized Gr QDs nanocomposites that showed an LOD of 0.1 nM in the linear range from 0.5 to 1000 nM [129] (Figure 9). The flavonol quercetin quantification in different samples of tea and honeysuckle from dried flowers used as a medicine was achieved at a CPE modified with porous alumina microfibers (AM), which showed an LOD of 10 nM in the linear range from 0.025 to 1.5 µM [167].…”

Section: Flavonoids Determination In Medicinal Herbsmentioning

confidence: 99%

Electrochemistry of Flavonoids: A Comprehensive Review

Chiorcea-Paquim

2023

IJMS

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Flavonoids represent a large group of aromatic amino acids that are extensively disseminated in plants. More than six thousand different flavonoids have been isolated and identified. They are important components of the human diet, presenting a broad spectrum of health benefits, including antibacterial, antiviral, antimicrobial, antineoplastic, anti-mutagenic, anti-inflammatory, anti-allergic, immunomodulatory, vasodilatory and cardioprotective properties. They are now considered indispensable compounds in the healthcare, food, pharmaceutical, cosmetic and biotechnology industries. All flavonoids are electroactive, and a relationship between their electron-transfer properties and radical-scavenging activity has been highlighted. This review seeks to provide a comprehensive overview concerning the electron-transfer reactions in flavonoids, from the point of view of their in-vitro antioxidant mode of action. Flavonoid redox behavior is related to the oxidation of the phenolic hydroxy groups present in their structures. The fundamental principles concerning the redox behavior of flavonoids will be described, and the phenol moiety oxidation pathways and the effect of substituents and experimental conditions on flavonoid electrochemical behavior will be discussed. The final sections will focus on the electroanalysis of flavonoids in natural products and their identification in highly complex matrixes, such as fruits, vegetables, beverages, food supplements, pharmaceutical compounds and human body fluids, relevant for food quality control, nutrition, and healthcare research.

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Section: Flavonoids Determination In Medicinal Herbsmentioning

confidence: 99%

Electrochemistry of Flavonoids: A Comprehensive Review

Chiorcea-Paquim

2023

IJMS

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“…Copper ions have Lewis acidity and strong electrophilic capacity. Generally, Cu-based MOFs have a large specific surface area, diverse structure, and unsaturated coordination metal centers, which greatly enhance their application in electrochemistry ( Chen X et al, 2022 ). One of the most well-characterized and widely studied MOF materials to date is HKUST-1 (HKUST is an acronym for the Hong Kong University of Science and Technology, also known as MOF-199, CuBTC), a Cu-based MOF.…”

Section: Application Of Mofs In Food Contamination Adsorption and Det...mentioning

confidence: 99%

Metal-organic frameworks for food contaminant adsorption and detection

Guo

Wang²,

Wang³

et al. 2023

Front. Chem.

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Metal-organic framework materials (MOFs) have been widely used in food contamination adsorption and detection due to their large specific surface area, specific pore structure and flexible post-modification. MOFs with specific pore size can be targeted for selective adsorption of some contaminants and can be used as pretreatment and pre-concentration steps to purify samples and enrich target analytes for food contamination detection to improve the detection efficiency. In addition, MOFs, as a new functional material, play an important role in developing new rapid detection methods that are simple, portable, inexpensive and with high sensitivity and accuracy. The aim of this paper is to summarize the latest and insightful research results on MOFs for the adsorption and detection of food contaminants. By summarizing Zn-based, Cu-based and Zr-based MOFs with low cost, easily available raw materials and convenient synthesis conditions, we describe their principles and discuss their applications in chemical and biological contaminant adsorption and sensing detection in terms of stability, adsorption capacity and sensitivity. Finally, we present the limitations and challenges of MOFs in food detection, hoping to provide some ideas for future development.

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“…The strategy of combining MOFs-derived materials and PEDOT was used to enhance the electrocatalytic activity and electrical conductivity of the composites, while providing an effective medium for the charge transfer capability of the electrodes. Meanwhile, the method of PEDOT compounded with other materials has been successfully applied to detect Ru analogues in the field of electrochemistry [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%