A New Possibility for Fermentation Monitoring by Electrical Driven Sensing of Ultraviolet Light and Glucose

Autor(es)

Amorim, Cleber A. ^[1] ; Blanco, Kate C. ^[2] ; Costa, Ivani M. ^{[3, 4]} ; de Araujo, Estacio P. ^[3] ; Arantes, Adryelle do Nascimento ^[3] ; Contiero, Jonas ^{[5, 6]} ; Chiquito, Adenilson J. ^[3]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, Sch Sci & Engn, Ave Domingos Costa Lopes, 780 Jardim Itaipu, BR-17602496 Tupa, SP - Brazil

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

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

^[4] Sao Paulo State Univ Unesp, Inst Chem, Rua Prof Francisco Degni, BR-14800060 Araraquara, SP - Brazil

^[5] Sao Paulo State Univ Unesp, Dept Gen & Appl Biol, Inst Biosci, Ave 24-A, 1515 Bela Vista, BR-13506692 Rio Claro, SP - Brazil

^[6] Sao Paulo State Univ Unesp, Inst Res Bioenergy, Rua 10, 2527 Santana, BR-13500230 Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: BIOSENSORS-BASEL; v. 10, n. 8 AUG 2020.
• Citações Web of Science: 0

Resumo

Industrial fermentation generates products through microbial growth associated with the consumption of substrates. The efficiency of industrial production of high commercial value microbial products such as ethanol from glucose (GLU) is dependent on bacterial contamination. Controlling the sugar conversion into products as well as the sterility of the fermentation process are objectives to be considered here by studying GLU and ultraviolet light (UV) sensors. In this work, we present two different approaches of SnO2 nanowires grown by the Vapor-Liquid-Solid (VLS) method. In the GLU sensor, we use SnO2 nanowires as active electrodes, while for the UV sensor, a nanowire film was built for detection. The results showed a wide range of GLU sensing and as well as a significant influence of UV in the electrical signal. The effect of a wide range of GLU concentrations on the responsiveness of the sensor through current-voltage based on SnO2 nanowire films under different concentration conditions ranging was verified from 1 to 1000 mmol. UV sensors show a typical amperometric response of SnO2 nanowires under the excitation of UV and GLU in ten cycles of 300 s with 1.0 V observing a stable and reliable amperometric response. GLU and UV sensors proved to have a promising potential for detection and to control the conversion of a substrate into a product by GLU control and decontamination by UV control in industrial fermentation systems. (AU)

• Processo FAPESP: 19/12694-3 - Tratamento de faringotonsilites com ação fotodinâmica
• Beneficiário: Kate Cristina Blanco
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado