Electrochemical Detections of Tea Polyphenols: A Review

Saikrithika, Sairaman

doi:10.1002/elan.202060061

Cited by 19 publications

(9 citation statements)

References 53 publications

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“…Electrochemical analysis methods include potentiometric titration, stripping voltammetry, electrochemical sensors, polarography, etc. Among them, electrochemical sensors with a high accuracy and sensitivity, rapid analysis, miniaturization, and on-site detection advantages become a promising direction of electrochemical analysis, and have been widely used in the study of total tea polyphenols determination [55,56].…”

Section: Electrochemical Analysismentioning

confidence: 99%

Recent Advances in Analytical Methods for Determination of Polyphenols in Tea: A Comprehensive Review

Sun

Jiang

Kong

et al. 2022

Foods

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Polyphenols, the most abundant components in tea, determine the quality and health function of tea. The analysis of polyphenols in tea is a topic of increasing interest. However, the complexity of the tea matrix, the wide variety of teas, and the difference in determination purposes puts forward higher requirements for the detection of tea polyphenols. Many efforts have been made to provide a highly sensitive and selective analytical method for the determination and characterization of tea polyphenols. In order to provide new insight for the further development of polyphenols in tea, in the present review we summarize the recent literature for the detection of tea polyphenols from the perspectives of determining total polyphenols and individual polyphenols in tea. There are a variety of methods for the analysis of total tea polyphenols, which range from the traditional titration method, to the widely used spectrophotometry based on the color reaction of Folin–Ciocalteu, and then to the current electrochemical sensor for rapid on-site detection. Additionally, the application of improved liquid chromatography (LC) and high-resolution mass spectrometry (HRMS) were emphasized for the simultaneous determination of multiple polyphenols and the identification of novel polyphenols. Finally, a brief outline of future development trends are discussed.

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Section: Electrochemical Analysismentioning

confidence: 99%

Recent Advances in Analytical Methods for Determination of Polyphenols in Tea: A Comprehensive Review

Sun

Jiang

Kong

et al. 2022

Foods

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“…In order to detect the content of IL-6 in vivo and in vitro , a variety of highly specific, sensitive and reliable detection techniques had been developed, such as enzyme-linked immunosorbent assay, colorimetry, photology, immunochromatography and so on ( Gu et al, 2018 ; Saikrithika and Senthil Kumar, 2020 ; Chen et al, 2021 ; Xu et al, 2021 ). These methods had some disadvantages such as low sensitivity, tedious operation, poor reproducibility and so on ( Jin and Maduraiveeran, 2017 ; Mihrican and Melike, 2018 ; McEachern et al, 2020 ; Rusheen et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

A novel electrochemical IL-6 sensor based on Au nanoparticles-modified platinum carbon electrode

Cai

xin

Yue³

et al. 2023

Front. Bioeng. Biotechnol.

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Introduction: Interleukin-6 (IL-6) is a multifunctional polypeptide cytokine composed of two glycoprotein chains, which plays an important role in many cellular reactions, pathological processes, diagnosis and treatment of diseases and so on. The detection of IL-6 plays a promising role in the cognition of clinical diseases.Methods: 4-mercaptobenzoic acid (4-MBA) was immobilized on the gold nanoparticles modified platinum carbon (PC) electrode with the linker IL-6 antibody, and finally formed an electrochemical sensor that specifically recognized IL-6. Through the highly specific antigen-antibody reaction, the IL-6 concentration of the samples to be detected. The performance of the sensor was studied by cyclic voltammetry (CV) and differential pulse voltammetry (DPV).Results: The experimental results showed that the linear detection range of the sensor for IL-6 was 100 pg/mL–700 pg/mL and the detection limit was 3 pg/mL. In addition, the sensor had the advantages of high specificity, high sensitivity, high stability and reproducibility under the interference environment of bovine serum albumin (BSA), glutathione (GSH), glycine (Gly) and neuron specific enolase (NSE), which provided a prospect for specific antigen detection sensor.Discussion: The prepared electrochemical sensor successfully detected the content of IL-6 in standard and biological samples, showing excellent detection performance. No significant difference was found between the detection results of the sensor and that of ELISA. The sensor showed a very broad prospect in the application and detection of clinical samples.

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“…Liquid chromatography coupled with tandem mass spectrometry was used to study the chemical changes of tea leaves during pile-fermentation [6] and determination of pesticide residues in tea leaves [7]. Electronic tongue and its biosensors for the analysis of tea polyphenols have also been utilized for the discrimination of tea [8]. Moreover, the identification of tea leaves relies on the sensory evaluation, which is subjective and unconvincing.…”

Section: Introductionmentioning

confidence: 99%

Infrared and Terahertz Spectra of Pu’er White Tea with Different Degrees of Oxidation

Guo

Sun

et al. 2023

Journal of Food Processing and Preservation

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In this work, the Fourier transform infrared spectroscopy (FTIR) and Terahertz time domain spectra (THz-TDS) were employed to study Pu’er white tea with different oxidation levels by changing the withering time. The strongest absorption peak of 3359 cm-1 in FTIR spectra comes from the proteins and polysaccharides. Several intensity ratios of the characteristic absorption peaks with different oxidation levels were analyzed. The white tea with different oxidation levels can be distinguished from the absorbance of THz-TDS in the range of 0.5–1.5 THz. The refractive index calculated from THz-TDS was between 1.42 and 1.44. Principal component analysis (PCA) using FTIR absorbance data showed that the scattered points of PC1 and PC2 can be well distributed in different districts. Hierarchical cluster analysis (HCA) helped to carry out the clustering results of different white tea samples. The sample with overoxidation level can be distinguished by PCA and HCA using THz-TDS absorbance data. Therefore, FTIR might be a convenient, fast, and nondestructive strategy for identifying white tea with different oxidation levels. THz-TDS combined with some software algorithms can be applied to distinguish the different oxidation-processed tea.

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Electrochemical Detections of Tea Polyphenols: A Review

Cited by 19 publications

References 53 publications

Recent Advances in Analytical Methods for Determination of Polyphenols in Tea: A Comprehensive Review

Recent Advances in Analytical Methods for Determination of Polyphenols in Tea: A Comprehensive Review

A novel electrochemical IL-6 sensor based on Au nanoparticles-modified platinum carbon electrode

Infrared and Terahertz Spectra of Pu’er White Tea with Different Degrees of Oxidation

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