Application of biohybrid silsesquioxane based material modified with methylene blue for determination of sulphite

• Autor(a) principal: Freitas, Bianca Trama [UNESP]
• Data de Publicação: 2023
• Outros Autores: Freitas, Rebeca Moreira Lima, Rodrigues, Aline Bento [UNESP], Baroni, Abner Santos [UNESP], dos Reis, Idalci Cruvinel, dos Santos Felipe, Alexsandro [UNESP], Rodrigues, Beatriz Bento [UNESP], Barbosa, Priscila Fernanda Pereira [UNESP], Maraldi, Vitor Alexandre [UNESP], dos Santos Franco, Fernanda [UNESP], dos Santos Peixoto, Murilo [UNESP], do Carmo, Devaney Ribeiro [UNESP]
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.1016/j.ijoes.2023.100100; http://hdl.handle.net/11449/248855
• topic: Biosensor; Cyclic voltammetry; Silsesquioxane; Sulphite; Yeast

Detecting organic and inorganic contaminants is one of the most important environmental concerns today. Consequently, the search for low-cost materials and efficient technologies for solving such a problem has increased, becoming of the utmost importance.Within this context, the present study applied a new nanostructured bioinorganic hybrid material with great potential in the field of nanotechnology: yeast Saccharomyces cerevisiae chemically modified with cubic silsesquioxane. Based on voltammetric measurements with modified graphite paste electrodes with yeast/silsesquioxane and methylene blue (YSB), the value of anodic peak current decreased linearly as the concentration of sulphite increased. The limit of detection obtained was of 0.60 μmol L−1 and sensitivity amperometric (Sa) of 5.8 × 10−4 μA/mol L−1