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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Fast spectroscopic monitoring of inhibitors in the 2G ethanol process

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Author(s):
Pinto, Ariane S. S. [1, 2] ; Ribeiro, Marcelo P. A. [1, 3] ; Farinas, Cristiane S. [1, 2]
Total Authors: 3
Affiliation:
[1] Univ Fed Sao Carlos, Grad Program Chem Engn, POB 676, BR-13565905 Sao Carlos, SP - Brazil
[2] Embrapa Instrumentat, Rua 15 Novembro 1452, BR-13560970 Sao Carlos, SP - Brazil
[3] Univ Fed Sao Carlos, Dept Chem Engn, POB 676, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Bioresource Technology; v. 250, p. 148-154, FEB 2018.
Web of Science Citations: 6
Abstract

One of the main challenges of second generation (2G) ethanol production is the high quantities of phenolic compounds and furan derivatives generated in the pretreatment of the lignocellulosic biomass, which inhibit the enzymatic hydrolysis and fermentation steps. Fast monitoring of these inhibitory compounds could provide better control of the pretreatment, hydrolysis, and fermentation processes by enabling the implementation of strategic process control actions. We investigated the feasibility of monitoring these inhibitory compounds by ultraviolet-visible (UV-Vis) spectroscopy associated with partial least squares (PLS) regression. Hydroxymethylfurfural, furfural, vanillin, and ferulic and p-coumaric acids generated during different severities of liquid hot water pretreatment of sugarcane bagasse were quantified with highly accuracy. In cross-validation (leave-one-out), the PLS-UV-Vis method presented root mean square error of prediction (RMSECV) of around only 5.0%. The results demonstrated that the monitoring performance achieved with PLS-UV-Vis could support future studies of optimization and control protocols for application in industrial processes. (AU)

FAPESP's process: 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales
Grantee:Roberto de Campos Giordano
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Thematic Grants