New Method for Carbohydrates Determination in Sugarcane Bagasse by HPAEC-RPAD Using Glassy Carbon Electrode Modified with Carbon Nanotubes and Nickel Nanoparticles

Autor(es)

de Sa, Acelino Cardoso ^{[1, 2]} ; Sedenho, Graziela Cristina ^[1] ; Paim, Leonardo Lataro ^[3] ; Stradiotto, Nelson Ramos ^{[1, 2, 4]}

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ Unesp, Inst Chem, Dept Analyt Chem, Rua Prof Francisco Degni 55, Araraquara, SP - Brazil

^[2] Sao Paulo State Univ Unesp, Bioenergy Res Inst IPBEN, Araraquara, SP - Brazil

^[3] Sao Paulo State Univ Unesp, Energy Engn, Expt Campus Rosana, Av Barrageiros 1881, Rosana, SP - Brazil

^[4] Fluminense Fed Univ UFF, Sch Ind Met Engn EEIMVR, Volta Redonda, RJ - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Electroanalysis; v. 30, n. 1, p. 128-136, JAN 2018.
• Citações Web of Science: 1

Resumo

Second generation ethanol can be produced from carbohydrates released from both sugarcane bagasse cell wall and sugarcane straw. The development of new method for the analysis of carbohydrates is, in this sense, seen as extremely relevant in the area of bioenergy. Based on the above considerations, the scope of this work encompasses the identification and quantification of carbohydrates composition in sugarcane bagasse without the need of sample derivatization, developing a novel analytical method using a glassy carbon electrode modified with multi-walled carbon nanotubes containing nickel oxyhydroxide nanoparticles (GCE/MWCNT/NiOOH) and applying the modified electrode as a detector in HPAEC (High Performance Anion-Exchange Chromatography) with reverse pulsed amperometric detection (RPAD) towards the determination of arabinose, galactose, glucose and xylose in hydrolyzed sugarcane bagasse. The carbohydrates concentrations determined in the hydrolyzed sugarcane bagasse were 6.1x10(-4)molL(-1), 1.0x10(-2)molL(-1) and 2.8x10(-3)molL(-1) for arabinose, glucose, and xylose respectively. Our results showed that the present method is, in essence, attractive for analysis in the course of the production process of second generation ethanol production in that it does not require sample derivatization, has rapid run time, satisfactory separation, and can be used for the detection of carbohydrates without the interference of other electroactive species. (AU)

• Processo FAPESP: 12/00258-5 - Desenvolvimento de novos métodos para determinação de açúcares, aldeídos furânicos e ácidos urónicos em materiais lignocelulósicos derivados de cana-de-açúcar
• Beneficiário: Nelson Ramos Stradiotto
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Regular
• Processo FAPESP: 11/19289-5 - Determinação de açúcares em bagaço e palha de cana-de-açúcar por cromatografia líquida de alta eficiência com detecção eletroquímica utilizando eletrodos de nanotubos de carbono modificados com óxidos metálicos
• Beneficiário: Acelino Cardoso de Sá
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 14/15557-3 - Determinação de carboidratos em bagaço de cana-de-açúcar empregando uma língua eletrônica voltamétrica formada por eletrodos modificados com MWCNT/oxi-hidróxido de níquel
• Beneficiário: Acelino Cardoso de Sá
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Doutorado