Potentiometric sensing of histamine using immobilized enzymes on layered double hydroxides.
J Food Sci Technol
; 58(8): 2936-2942, 2021 Aug.
Article
em En
| MEDLINE
| ID: mdl-34294955
ABSTRACT
Diamine oxydase and peroxidase have been co-immobilized onto layered double hydroxide (LDH) thin films for the development of real-time histamine biosensors. The chosen LDH materials are Mg2AlCO3, Mg4FeCl and Ca2AlCl. Prepared bi-enzymatic hybrid nanomaterials are capable of detecting histamine through the electrochemical oxidation of H2O2 and are used as the sensitive membrane for potentiometric microelectrode. Histamine biosensors developed in this work have fast response of less than 20 s, are sensitive and selective, with a large dynamic range of 10-8-10-3 M and a limit of detection of less than 10-8 M. The detection limit of the developed bi-enzymatic biosensors is relatively higher than those corresponding with gas and liquid chromatography, which are still considered as the reference methods. Finally, the reproducibility, the specificity and the storage stability of the biosensors were studied.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Food Sci Technol
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Tunísia