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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.)

Enhancing the production of the fermentable sugars from sugarcane straw: A new approach to applying alkaline and ozonolysis pretreatments

Full text
Author(s):
Orduna Ortega, Julieth [1, 2] ; Mora Vargas, Jorge Andres [2] ; Metzker, Gustavo [2] ; Gomes, Eleni [2] ; da Silva, Roberto [2] ; Boscolo, Mauricio [2]
Total Authors: 6
Affiliation:
[1] Univ Santiago Cali, Fac Ciencias Basicas, Campus Pampalinda, Santiago De Cali - Colombia
[2] Sao Paulo State Univ, UNESP, Inst Biosci Humanities & Exact Sci, Sao Jose Do Rio Preto, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: RENEWABLE ENERGY; v. 164, p. 502-508, FEB 2021.
Web of Science Citations: 1
Abstract

The present study, sugarcane straw residue (SCS) was submitted to a combination of mild alkaline pretreatment and ozone cycles in a rotary reactor aiming to obtain fermentable sugars. The SCS exposed to short ozone cycles and short reaction times proved to be as efficient as long ozone exposure times usually employed, with no significant variation on the concentration of the fermentable sugars. Also, studies carried out on the ozone concentration, ozone exposure time, reaction time and biomass amount on the ozonolysis process were conducted. The washing processes after alkaline pretreatment and ozonolysis were also studied. During the alkaline pretreatment, approximately 73% of total phenolic compounds (TPC) was generated. After the first wash 79% of the TPC was washed away and 95% was removed after the second wash. The TPC content in wash solution obtained after ozonolysis is about 2.3% of the TPC generated with the alkaline pretreatment. For the enzymatic hydrolysate 0.20 g L-1 of TPC was obtained, a low value compared to similar studies. The inhibitor detected in the highest concentration was acetic acid for all solutions, except for ozonolysis where fumaric acid predominated. Hydroxymethylfurfural (HMF) and furfural were detected in amounts of less than 10 mg L-1. (C) 2020 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 14/02080-4 - Production of ethanol from bagasse sugarcane pretreated with ozone: study of inhibitors, fermentation and industrial yeasts
Grantee:Roberto da Silva
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 17/13230-5 - Partial ethanol reforming: stability and selectivity of mix metal amphoteric oxides as catalysts for atmospheric pressure flow reaction
Grantee:Mauricio Boscolo
Support Opportunities: Program for Research on Bioenergy (BIOEN) - Regular Program Grants
FAPESP's process: 15/11588-4 - Hydrotalcites containing Ag, Cu, Ni, Fe, La or Nb as catalysts for dehydrogenation of ethanol and hydrogenation of sugar cane bagasse
Grantee:Olavo Micali Perrone
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 17/09520-8 - Sucrose pyridinic esters: synthesis, characterization and antimicrobial activity: evaluation of the synthesis parameters by acoustic cavitation
Grantee:Jorge Andrés Mora Vargas
Support Opportunities: Scholarships in Brazil - Master
FAPESP's process: 10/12624-0 - Application of physical-chemical and enzymatic methods in the saccharification of sugar cane bagasse: studies on microorganisms, fermentative processes and hydrolyses methods
Grantee:Eleni Gomes
Support Opportunities: Research Projects - Thematic Grants