Colorimetric detection of gallic acid based on the enhanced oxidase-like activity of floral-like magnetic Fe3 O4 @MnO2.
Luminescence
; 34(1): 55-63, 2019 Feb.
Article
en En
| MEDLINE
| ID: mdl-30426711
ABSTRACT
In this study, a colorimetric method was developed for rapid and sensitive determination of gallic acid (GA) by using floral-like magnetic Fe3 O4 @MnO2 composite material with enhanced oxidase-like activity. Fe3 O4 @MnO2 composite material is able to oxidize 3,3',5,5'-tetramethylbenzidine (TMB) to a blue product (oxTMB) with apparent color change and absorbance at 652 nm. GA can reduce the oxTMB yielding a fading blue color. Based on these results, a technique is proposed to detect GA quantitatively and qualitatively with UV-vis spectroscopy and bare eyes. A low detection limit of 0.105 µM and a detection range of 0.01 to 15 µM were obtained with UV-vis spectroscopy. This methodology possesses high potential for application in determination of GA.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Óxidos
/
Compuestos Ferrosos
/
Compuestos de Manganeso
/
Colorimetría
/
Ácido Gálico
Tipo de estudio:
Diagnostic_studies
Idioma:
En
Revista:
Luminescence
Asunto de la revista:
BIOFISICA
/
BIOQUIMICA
Año:
2019
Tipo del documento:
Article