Determination of carbohydrates in sugarcane bagasse employing a voltammetric electronic tongue formed by nickel oxy-hydroxide/MWCNT modified electrodes

• Grant number: 14/15557-3
• Support Opportunities: Scholarships abroad - Research Internship - Doctorate
• Start date: October 31, 2014
• End date: April 29, 2015
• Field of knowledge: Physical Sciences and Mathematics - Chemistry - Analytical Chemistry
• Principal Investigator: Nelson Ramos Stradiotto
• Grantee: Acelino Cardoso de Sá
• Supervisor: Manuel del Valle Zafra
• Host Institution: Instituto de Química (IQ). Universidade Estadual Paulista (UNESP). Campus de Araraquara. Araraquara , SP, Brazil
• Institution abroad: Universitat Autònoma de Barcelona (UAB), Spain
• Associated to the scholarship: 11/19289-5 - Determination of sugar in bagasse and straw of cane sugar by high performance liquid chromatography with electrochemical detection using electrode modified carbon nanotubes with metal oxides, BP.DR

Abstract

The biomass consisting of sugarcane bagasse is a byproduct of the process of producing sugar and ethanol. New applications to make the most of bagasse have been developed, among them we can highlight the production of biofuels (ethanol) of second generation. The second generation ethanol is produced from the carbohydrates released from the cell wall of bagasse and straw of sugarcane. Accurate measurement of the carbohydrates content present in the samples of sugarcane bagasse is very important, because its quantification is directly linked to the production of second generation ethanol. Classical methods for the determination of carbohydrates in biomass will be based on the chromatographic technique, which allow individual identification of carbohydrates but these require specific equipment, laboratory conditions and/or trained people. The use of sensors is a desired way to solve such problems, but there are not perfectly ideal sensors for all applications. A new methodology in the use of sensors entails using multiple sensing devices plus advanced data treatment of the information generated. This is known as electronic tongue, and it is a highly versatile approach capable of simultaneously monitoring the level of different analytes. Main goals of this project are then the application of a voltammetric electronic tongue formed by glassy carbon electrodes modified with multi-walled carbon nanotubes containing nickel oxy-hydroxide (GCE/MWCNT/NiOOH) towards the analysis of carbohydrates (arabinose, galactose, glucose, xylose and mannose) in biomass (sugarcane bagasse). As such, it combines the responses from an array of voltammetric GCE/MWCNT/NiOOH sensors, plus an advanced response model obtained using artificial neural networks (ANN). Since the departure data is highly complex, providing each sensor in the array a complete voltammogram, initial pretreatment of the data is also necessary, for which different compression methods may be evaluated. (AU)

Scientific publications

(4)

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

DE SA, ACELINO CARDOSO; SEDENHO, GRAZIELA CRISTINA; PAIM, LEONARDO LATARO; STRADIOTTO, NELSON RAMOS. New Method for Carbohydrates Determination in Sugarcane Bagasse by HPAEC-RPAD Using Glassy Carbon Electrode Modified with Carbon Nanotubes and Nickel Nanoparticles. Electroanalysis, v. 30, n. 1, p. 128-136, JAN 2018. (12/00258-5, 11/19289-5, 14/15557-3)

DE SA, ACELINO C.; PAIM, LEONARDO L.; STRADIOTTO, NELSON R.. New Detector Based on Composite of Carbon Nanotubes with Nanoparticles of Cobalt Oxide for Carbohydrates Analysis by HPLC with Reverse Pulsed Amperometric Detection. Journal of the Brazilian Chemical Society, v. 31, n. 3, p. 456-466, MAR 2020. (11/19289-5, 14/15557-3, 12/00258-5)

DE SA, ACELINO CARDOSO; CIPRI, ANDREA; GONZALEZ-CALABUIG, ANDREU; STRADIOTTO, NELSON RAMOS; DEL VALLE, MANEL. Multivariate Determination of Total Sugar Content and Ethanol in Bioethanol Production Using Carbon Electrodes Modified with MWCNT/MeOOH and Chemometric Data Treatment. Electroanalysis, v. 30, n. 8, p. 1688-1697, AUG 2018. (12/00258-5, 11/19289-5, 14/15557-3)

DE SA, ACELINO CARDOSO; CIPRI, ANDREA; GONZALEZ-CALABUIG, ANDREU; STRADIOTTO, NELSON RAMOS; DEL VALLE, MANEL. Resolution of galactose, glucose, xylose and mannose in sugarcane bagasse employing a voltammetric electronic tongue formed by metals oxy-hydroxide/MWCNT modified electrodes. SENSORS AND ACTUATORS B-CHEMICAL, v. 222, p. 645-653, JAN 2016. (12/00258-5, 11/19289-5, 14/15557-3)