A colorimetric detection of creatinine based-on EDTA capped-gold nanoparticles (EDTA-AuNPs): Digital image colorimetry

Sensors International, Год журнала: 2024, Номер unknown, С. 100286 - 100286

Опубликована: Июль 1, 2024

A colorimetric sensor based on EDTA-modified gold nanoparticles (EDTA-AuNPs) has been developed for the sensitive and selective detection of creatinine using UV-vis spectrophotometer digital image method. The presence in EDTA-AuNPs results a decrease absorbance peak at 524 nm appearance an 700 spectrum. Creatinine induces aggregation EDTA-AuNPs, resulting color change from wine red to blue, which is easily observable with naked eye. Color changes colloids can be further methods red, green, blue colors detect creatinine. method demonstrated linear relationship between ratio A700/A524 range 0.0–5.0 mM, regression coefficient 0.9906 limit 0.125 mM. Meanwhile, demonstrates intensity (R) concentration, high 0.996 low 0.050 testing conducted artificial urine samples recovery rate 97.5% 101.7%, relative standard deviation (RSD) ranging 0.28% 0.74%. These indicate good measurement accuracy precision

Язык: Английский

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Exploration of Biocompatible Ascorbic Acid Reduced and Stabilized Gold Nanoparticles, as Sensitive and Selective Detection Nanoplatform for Silver Ion in Solution

Plasmonics, Год журнала: 2024, Номер unknown

Опубликована: Июль 3, 2024

Язык: Английский

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Various Methods of Synthesis and Applications of Gold-Based Nanomaterials: A Detailed Review

Crystal Growth & Design, Год журнала: 2025, Номер unknown

Опубликована: Март 13, 2025

Язык: Английский

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Gold Nanoparticles‐Based Colorimetric Assay for Cathepsin S Activity

Chemistry - An Asian Journal, Год журнала: 2025, Номер unknown

Опубликована: Май 22, 2025

Abstract Cathepsin S (CatS) is a lysosomal enzyme belonging to the papain family of cysteine proteases. Studies have demonstrated that CatS plays pivotal role in antigen presentation and associated with Alzheimer's disease, atherosclerosis, obesity, positioning it as potential target related disorders. Consequently, development selective straightforward method for detecting crucial. In this study, we introduce colorimetric approach utilizing gold nanoparticles (AuNPs) CatS‐specific peptides detection activity. The cleavage peptides, PMGAPC or PMGAPC‐NH 2 , can stabilize AuNPs hydrosaline solution without aggregation. Upon hydrolysis by CatS, aggregate color change from red blue. After optimizing size concentration limits were both be 10 nM, when used protect AuNPs. Therefore, assay, which employs AuNPs, enables not only but also simple visible naked eye.

Язык: Английский

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Quercetin Reduced and Stabilized Gold Nanoparticle/Al3+: A Rapid, Sensitive Optical Detection Nanoplatform for Fluoride Ion

Nanomaterials, Год журнала: 2024, Номер 14(23), С. 1967 - 1967

Опубликована: Дек. 7, 2024

In this contribution, facile synthesis of gold nanoparticles (AuNPs) at ambient conditions is reported based on the use polyphenolic compound quercetin (QT) as reducing and stabilizing agent room temperature (RT). Under alkali-induced pH adjustment QT solution stirring RT, could quickly reduce salt (Au

Язык: Английский

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Design and optimization of a colorimetric biosensor using functionalized gold nanoparticles and bi-functional linker for agriculture and food industry

Microchemical Journal, Год журнала: 2024, Номер 206, С. 111600 - 111600

Опубликована: Сен. 10, 2024

Язык: Английский

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Novel Gold Nanoparticle-Based Plasmonic Sensor for Maleic Acid

Plasmonics, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 27, 2024

Язык: Английский

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