Open AccessFabrication of a New, Low-Cost, and Environment-Friendly Laccase-Based Biosensor by Electrospray Immobilization with Unprecedented Reuse and Storage Performances
Author(s) -
Mattea Carmen Castrovilli,
Emanuela Tempesta,
Antonella Cartoni,
P. Plescia,
P. Bolognesi,
Jacopo Chiarinelli,
Pietro Calandra,
Nunzia Cicco,
Maria Verrastro,
Diego Centonze,
Ludovica Gullo,
Alessandra Del Giudice,
Luciano Galantini,
L. Avaldi
Publication year - 2022
Publication title -
acs sustainable chemistry and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.878
H-Index - 109
ISSN - 2168-0485
DOI - 10.1021/acssuschemeng.1c07604
Subject(s) - biosensor , laccase , nanotechnology , environmentally friendly , substrate (aquarium) , materials science , chemistry , organic chemistry , ecology , oceanography , geology , biology , enzyme
The fabrication of enzyme-based biosensors has received much attention for their selectivity and sensitivity. In particular, laccase-based biosensors have attracted a lot of interest for their capacity to detect highly toxic molecules in the environment, becoming essential tools in the fields of white biotechnology and green chemistry. The manufacturing of a new, metal-free, laccase-based biosensor with unprecedented reuse and storage capabilities has been achieved in this work through the application of the electrospray deposition (ESD) methodology as the enzyme immobilization technique. Electrospray ionization (ESI) has been used for ambient soft-landing of laccase enzymes on a carbon substrate, employing sustainable chemistry. This study shows how the ESD technique can be successfully exploited for the fabrication of a new promising environment-friendly electrochemical amperometric laccase-based biosensor, with storage capability up to two months without any particular care and reuse performance up to 63 measurements on the same electrode just prepared and 20 measurements on the one-year-old electrode subjected to redeposition. The laccase-based biosensor has been tested for catechol detection in the linear range 2-100 μM, with a limit of detection of 1.7 μM, without interference from chrome, cadmium, arsenic, and zinc and without any memory effects.