| Texto completo | |
| Autor(es): |
de Freitas, Rafaela C.
;
Camargo, Jessica Rocha
;
Brazaca, Lais Canniatti
;
Angnes, Lucio
;
Fatibello-Filho, Orlando
;
Janegitz, Bruno C.
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Talanta; v. 298, p. 13-pg., 2026-09-24. |
| Resumo | |
This study presents a novel eco-friendly water-based conductive ink composed of cassava starch (from tapioca flour) and sorbitol, combined with graphite powder and carbon black, for the fabrication of screen-printed electrodes. The electrochemical detection of uric acid was performed via differential pulse voltammetry, achieving a linear range of 5.0-100 mu mol L- 1 and a detection limit of 0.34 mu mol L- 1. The disposable sensors exhibited recovery rates ranging from 86.9 % to 112.1 % for synthetic urine and human serum samples. Additionally, a sensor was developed using the same conductive ink, incorporating coconut fiber into the formulation. Cyclic voltammetry was employed to detect hydrogen peroxide, with a linear range from 2.3 to 11.4 mmol L- 1 and a detection limit of 0.6 mu mol L- 1. The sensor demonstrated satisfactory performance for pharmaceutical applications, with recovery rates ranging from 90.3 % to 106.9 %. This work highlights the potential of waterbased conductive inks using starch as a binder and coconut fiber in the development of sustainable electrochemical sensors, paving the way for environmentally friendly devices in analytical applications. (AU) | |
| Processo FAPESP: | 24/04116-8 - Emprego de solventes eutéticos profundos em procedimentos espectrofotométricos e eletroanalíticos sustentáveis |
| Beneficiário: | Orlando Fatibello Filho |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 23/10141-2 - Novos biossensores vestíveis para análises não invasivas de biomarcadores proteicos |
| Beneficiário: | Laís Canniatti Brazaca |
| Modalidade de apoio: | Auxílio à Pesquisa - Jovens Pesquisadores |
| Processo FAPESP: | 23/06793-4 - Desenvolvimento de sistemas eletroquímicos multiplex aplicados para detecção de biomarcadores relacionados a doenças cardiovasculares |
| Beneficiário: | Bruno Campos Janegitz |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 14/50867-3 - INCT 2014: Instituto Nacional de Ciência e Tecnologia de Bioanalítica |
| Beneficiário: | Marco Aurelio Zezzi Arruda |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |