| Texto completo | |
| Autor(es): |
Chiappim, William
;
Kodaira, Felipe Vicente de Paula
;
de Castro, Gisele Fatima Soares
;
da Silva, Diego Morais
;
Tavares, Thayna Fernandes
;
Almeida, Ana Carla de Paula Leite
;
Leal, Bruno Henrique Silva
;
Quade, Antje
;
Koga-Ito, Cristiane Yumi
;
Kostov, Konstantin Georgiev
Número total de Autores: 10
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Molecules; v. 29, n. 17, p. 21-pg., 2024-09-01. |
| Resumo | |
This study proposes an affordable plasma device that utilizes a parallel-plate dielectric barrier discharge geometry with a metallic mesh electrode, featuring a straightforward 3D-printed design. Powered by a high-voltage supply adapted from a cosmetic plasma device, it operates on atmospheric air, eliminating the need for gas flux. Surface modification of polyethylene treated with this device was characterized and showed that the elemental composition after 15 min of plasma treatment decreased the amount of C to similar to 80 at% due to the insertion of O (similar to 15 at%). Tested against Candida albicans and Staphylococcus aureus, the device achieved a reduction of over 99% in microbial load with exposure times ranging from 1 to 10 min. Simultaneously, the Vero cell viability remained consistently high, namely between 91% and 96% across exposure times. These results highlight this device's potential for the surface modification of materials and various infection-related applications, boasting affordability and facilitating effective antimicrobial interventions. (AU) | |
| Processo FAPESP: | 19/05856-7 - Aplicações de plasmas atmosféricos não-térmicos na odontologia: da bancada para a clínica |
| Beneficiário: | Cristiane Yumi Koga Ito |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |