Flow injection analysis of kojic acid in cosmetics by a carbon-nanotube modified screen-printed electrode

Shih, Ying; Zen, Jyh‐Myng; Ke, Jyh-Harng; Hsu, Jaw-Cherng; Chen, Pei-Chi

doi:10.38212/2224-6614.2430

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…In the last few decades, various methods have been developed for the determination of kojic acid content, such as HPLC, [8,9] capillary electrophoresis, [10] colorimetry, [11] electrochemistry, and gravimetric methods, [12][13][14][15] However, HPLC usually suffers from the disadvantages including time-consuming pretreatment and relatively expensive instruments. Colorimetric and electrochemical methods are both low specificity for kojic acid.…”

Section: Introductionmentioning

confidence: 99%

A rapid and label‐free fluorescent sensor for kojic acid based on the inner filter effect

Wang

2022

J Chinese Chemical Soc

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As kojic acid is increasingly used in food and cosmetics, its safety issues have attracted more and more attention. Therefore, a label‐free fluorescent sensor was developed in this study for kojic acid content detection based on the fluorescence internal filtering effect between gold nanoclusters(AuNCs) and kojic acid. In the presence of kojic acid, the fluorescent signal dropped obviously due to the competitive absorption of excitation light of AuNCs. Under the optimized conditions, the sensor exhibits rapid and selective detection of kojic acid, the linear range is 10–1,000 μM (R2 = 0.996) and the detection limit is 5 μM. The recoveries in real samples range from 97.4 to 104.3%. Furthermore, the sensor is low‐cost, convenient, time‐saving, and may hold great potential for future kojic acid detection.

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Section: Introductionmentioning

confidence: 99%

A rapid and label‐free fluorescent sensor for kojic acid based on the inner filter effect

Wang

2022

J Chinese Chemical Soc

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“…As a kind of natural antibiotic metabolically produced by filamentous fungi and bacteria of many species of Aspergillus, Penicillium and Acetobacter, KA has been extensively used as an additive in food products (such as soy bean paste, soy sauce) by taking the advantage of antibacterial and antifungal properties. 1,2 KA, as an antioxidant, has been utilized to preserve the foodstuff against both chemical and microbial degradation, such as preserving food color, inhibiting tyrosinase through chelating the copper in enzyme structure. [1][2][3] KA was also used as an inhibitor of nitrosopyrrolidine formation in fried food.…”

mentioning

confidence: 99%

“…1,2 KA, as an antioxidant, has been utilized to preserve the foodstuff against both chemical and microbial degradation, such as preserving food color, inhibiting tyrosinase through chelating the copper in enzyme structure. [1][2][3] KA was also used as an inhibitor of nitrosopyrrolidine formation in fried food. However, due to the 4-pyranone structure (aromaticity like benzene) in its molecules, KA had potential risks and adverse effects on human health if taken in excess.…”

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confidence: 99%

Blocking the Cu (II) Ions Mediated Catalytical Ability for Construction of Ratiometric Fluorescence Sensing Platform Based on Glutathione-Stabilized Copper Nanoclusters

Tao

Zhang

et al. 2022

J. Electrochem. Soc.

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It is of great importance to integrate two kinds of fluorescent probes in one system to construct ratiometric sensing platform. Inspired by the efficient overlapped spectrum of glutathione-stabilized copper nanoclusters (GSH-CuNCs) and 2, 3-diaminophenazine (DAP), a novel and label-free ratiometric fluorescent sensor has been developed for Cu2+ and kojic acid (KA) detection on the basis of in situ converting o-phenylenediamine (OPD) into DAP by the catalytic oxidation ability of Cu2+. The Cu2+ catalytically generated DAP was served as an energy acceptor to inhibit the fluorescence emission of GSH-CuNCs (energy donor). As a result, the sensitivity and accuracy of the strategy were greatly improved due to the dual-emission reverse change ratiometric profile. The sensing system showed high sensitivity toward Cu2+ in a range of 0.1-50 μM and with a limit of detection of 20 nM. Furthermore, based on the specific coordination interaction between Cu2+ and KA, the ratiometric sensor displayed the range of detection of KA from 0.2 μM to 300 μM with a limit of detection of 50 nM. Thus, the ratiometric method paved a new way for the effective quantification of Cu2+ and KA in real samples, which were closely concerned with human health.

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Flow injection analysis of kojic acid in cosmetics by a carbon-nanotube modified screen-printed electrode

Cited by 2 publications

References 10 publications

A rapid and label‐free fluorescent sensor for kojic acid based on the inner filter effect

A rapid and label‐free fluorescent sensor for kojic acid based on the inner filter effect

Blocking the Cu (II) Ions Mediated Catalytical Ability for Construction of Ratiometric Fluorescence Sensing Platform Based on Glutathione-Stabilized Copper Nanoclusters

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