Colorimetric detection of gallic acid based on the enhanced oxidase‐like activity of floral‐like magnetic Fe3O4@MnO2

Wang, Yanying; Zhu, Xiaoyan; Ding, Fang; Liu, Yaqin; Li, Yang; Zou, Ping; Zhao, Qingbiao; Wang, Xianxiang; Rao, Hanbing

doi:10.1002/bio.3576

Cited by 25 publications

(5 citation statements)

References 51 publications

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“…36,37 In addition, the developed voltammetric method application has several advantages such as simplicity in sample preparations and analysis, short time of analysis, and the low price of instrumentations compared with other analytical methods. [38][39][40]…”

Section: Recoverymentioning

confidence: 99%

Voltammetric Determination of Gallic Acid and its Content in Tea Samples Using Modified Iodine-Coated Platinum Electrode

2021

TJNPR

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While platinum electrode shows high reactivity towards adsorption processes, iodine-coated platinum electrode offers remarkable inertness toward these processes. Therefore, iodine-coated platinum electrodes have become very significant in voltammetric applications. This study reports the use of the modified iodine-coated polycrystalline platinum electrode as a voltammetric sensor for gallic acid determination in tea samples. The optimized experimental parameters for determining gallic acid used 0.5M H2SO4 as a supporting electrolyte with a scan rate of 50 mV/s. The anodic peak related to gallic acid oxidation was centered at approximately 0.60V. The extended detected linear range for the developed method was between 0.025 and 2.0 mM. The anodic current showed excellent linearity with R 2 =0.9975. The limit of detection (LOD) and limit of quantitation (LOQ) were 0.022mM and 0.0669 mM, respectively, which confirmed the method's sensitivity. The investigation for the effect of potential interferences from tea components indicated a specific selectivity toward gallic acid with only slight interference due to the presence of ascorbic acid and the absence of any electrochemical response toward glucose, caffeine, Ni 2+ , K + , Na + , and Zn 2+ . The proposed method was successfully applied in the analysis of gallic acid in tea samples. The recovery values (90.0 -103.25%) obtained in this study support the use of the developed method to analyze gallic acid in tea samples.

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Section: Recoverymentioning

confidence: 99%

Voltammetric Determination of Gallic Acid and its Content in Tea Samples Using Modified Iodine-Coated Platinum Electrode

2021

TJNPR

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“…Additionally, it is frequently used as a sign of validity of various alcoholic and fruit juices . All these demand the quantification of GA and hence calorimetry, fluorescence spectroscopy, high-performance liquid chromatography, , flow injection analysis, and thin layer chromatography, which are among the traditional analyses used. These methods sometimes entail a number of pricey equipment, difficult sample pretreatment, and lengthy analysis times.…”

Section: Introductionmentioning

confidence: 99%

Natural Polymer Encapsulated Zeolitic Imidazolate Framework-12 Composite toward Electrochemical Sensing of Antitumor Agent

Thenrajan,

Madhu Malar,

Wilson

2024

ACS Appl. Bio Mater.

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Encapsulation of natural polymer pectin (Pec) into a zeolitic imidazolate framework-12 (ZIF-12) matrix via a simple chemical method toward anticancer agent gallic acid (GA) detection is reported in this work. GA, a natural phenol found in many food sources, has gained attention by its biological effects on the human body, such as an antioxidant and anti-inflammatory. Therefore, it is crucial to accurately and rapidly determine the GA level in humans. The encapsulation of Pec inside the ZIF-12 has been successfully confirmed from the physiochemical studies such as XRD, Raman, FTIR, and XPS spectroscopy along with morphological FESEM, BET, and HRTEM characterization. Under optimized conditions, the Pec@ZIF-12 composite exhibits wide linear range of 20 nM−250 μM with a detection limit of 2.2 nM; also, it showed excellent selectivity, stability, and reproducibility. Furthermore, the real sample analysis of food samples including tea, coffee, grape, and pomegranate samples shows exceptional recovery percentage in an unspiked manner. So far, there is little literature for encapsulating proteins, enzymes, metals, etc., that have been reported; here, we successfully encapsulated a natural polymer Pec inside the ZIF-12 cage. This encapsulation significantly enhanced the composite electrochemical performance, which could be seen from the overall results. All of these strongly suggest that the proposed Pec@ZIF-12 composite could be used for miniaturized device fabrication for the evaluation of GA in both home and industrial applications.

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“…GA has many biological activities and pharmacological effects, such as anti‐oxidation, anti‐radical, hemostasis antidiarrheal, anti‐tumor effects, etc. [ 5,6 ] At present GA has been widely used in food, medicine, chemical industry and other fields. Quantitative and accurate determination of GA content is of great significance to research and develops the biological and antioxidant activity of GA.…”

Section: Introductionmentioning

confidence: 99%

“…GA has many biological activities and pharmacological effects, such as anti-oxidation, anti-radical, hemostasis antidiarrheal, anti-tumor effects, etc. [5,6] At present GA has been widely used in food, medicine, chemical industry and other fields.…”

Section: Introductionmentioning

confidence: 99%

“…For example, the methods used to detect iron(II) include chemiluminescence, [7,8] liquid chromatography, [9] colorimetry, [3,10] spectrophotometric, [11][12][13] flame atomic absorption spectrometry, [14] photothermal effect, [15] fluorescence analysis [16][17][18] and so on. Analysis and determination methods of GA include flow injection chemiluminescent method, [19] spectrophotometric, [20][21][22] isocratic column liquid chromatography, [23] differential pulse polarography, [24] colorimetry, [6,25] electrochemical method based on molecularly imprinted polymers, [26] fluorescence, [27,28] voltammetric method, [29][30][31] etc. Among these methods, fluorometry has many advantages such as simple operation, high sensitivity, and good reproducibility of determination results.…”

Section: Introductionmentioning

confidence: 99%

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A dual‐mode optical assay for iron(II) and gallic acid based on Fenton reaction

Ding

et al. 2022

Luminescence

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The hydroxyl radicals (·OH) produced by the Fenton reaction of iron(II) and hydrogen peroxide (H2O2) can oxidize the colorless 3,3′,5,5′‐tetramethylbenzidine (TMB) to blue oxidized TMB (Ox‐TMB), resulting in a decrease in the fluorescence intensity of the reaction system and an increase in ultraviolet absorption. Ox‐TMB had a visible absorption peak at 625 nm and a fluorescence peak around 420 nm. When gallic acid (GA) was added to the system, Ox‐TMB was reduced to TMB, which made the color of the system disappear and the fluorescence recover. The linear ranges for determination of iron(II) were 0.5–10 μM (fluorometric) and 0.5–20 μM (colorimetric), and the detection limits were 0.25 μM (fluorometric) and 0.28 μM (colorimetric). The linear ranges for determination of GA were 0–80 μM (fluorometric) and 0–60 μM (colorimetric), and the detection limits were 0.31 μM (fluorometric) and 0.8 μM (colorimetric). The results of anti‐interference experiments shew that this dual‐mode assay had very good selectivity for the determination of iron(II) and GA.

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Colorimetric detection of gallic acid based on the enhanced oxidase‐like activity of floral‐like magnetic Fe₃O₄@MnO₂

Cited by 25 publications

References 51 publications

Voltammetric Determination of Gallic Acid and its Content in Tea Samples Using Modified Iodine-Coated Platinum Electrode

Voltammetric Determination of Gallic Acid and its Content in Tea Samples Using Modified Iodine-Coated Platinum Electrode

Natural Polymer Encapsulated Zeolitic Imidazolate Framework-12 Composite toward Electrochemical Sensing of Antitumor Agent

A dual‐mode optical assay for iron(II) and gallic acid based on Fenton reaction

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