A rapid and sensitive colorimetric discrimination and detection of cysteine, homocysteine and glutathione by phloroglucinol-functionalized silver nanoresonators with real applications

Abstract

This study describes the preparation and application of simple yet effective silver nanoprobes for the facile colorimetric discrimination and detection of cysteine, homocysteine and glutathione in real time at the micro molar levels with three distinct colors. These nanoprobes were further exploited to detect and determine cysteine and glutathione from their respective commercial samples, with recoveries exceeding 80%. FT-IR spectroscopy, UV-Vis spectroscopy, SEM, TEM, EDAX, AFM and DLS studies have supported our findings.