Active-electrode biosensor of SnO2 nanowire for cyclodextrin detection from microbial enzyme

Autor(es)

Amorim, Cleber A. ^[1] ; Blanco, Kate C. ^[2] ; Costa, Ivani M. ^[3] ; Vicente, Eduardo F. ^[1] ; Petruci, Joao Flavio da S. ^[4] ; Contiero, Jonas ^[5] ; Leite, Edson R. ^[6] ; Chiquito, Adenilson J. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Estadual Paulista, Fac Ciencias & Engn Tupa, Ave Domingos Costa Lopes, 780 Jardim Itaipu, Tupa, SP - Brazil

^[2] Univ Sao Paulo, Inst Fis Sao Carlos, Box 369, BR-13566970 Sao Carlos, SP - Brazil

^[3] Univ Fed Sao Carlos UFSCar, Dept Fis, NanoLab, Rodovia Washington Luiz, Km 235 Monjolinho, CP 676, BR-13565905 Sao Carlos, SP - Brazil

^[4] Univ Fed Uberlandia, Inst Quim, Ave Joao Naves de Avila 2121, Uberlandia, MG - Brazil

^[5] Univ Estadual Paulista, Inst Biociencias Rio Claro, Dept Bioquim & Microbiol, Ave 24-A, 1515 Bela Vista, Rio Claro, SP - Brazil

^[6] Univ Fed Sao Carlos UFSCar, Dept Quim, LIEC, Rodovia Washington Luiz, Km 235 Monjolinho, BR-13565905 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Nanotechnology; v. 31, n. 16 APR 17 2020.
• Citações Web of Science: 0

Resumo

Cyclodextrin (CD) is a conical compound used in food and pharmaceutical industry to complexation of hydrophobic substances. It is a product of microbial enzymes which converts starch into CD during their activity. We aim to detect CD using active-electrode biosensor of SnO2. They were grown on active electrode by the VLS method. The CD consists of several glucose units which have hydroxyl groups which tend to bind to interface states present in nanowires changing their conductivity. Experimental results of electrical conductivity at different CD concentrations are presented. A model that describes the influence of adsorbed glucose on nanowires and its electrical properties is also presented. Some general observations are performed on the applicability of the CD adsorption method by the nanowire-based biosensor. (AU)

• Processo FAPESP: 16/00446-7 - Aplicação de peptídeos antimicrobianos como novos aditivos na nutrição animal
• Beneficiário: Eduardo Festozo Vicente
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 19/12694-3 - Tratamento de faringotonsilites com ação fotodinâmica
• Beneficiário: Kate Cristina Blanco
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado