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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.)

Soaking and ozonolysis pretreatment of sugarcane straw for the production of fermentable sugars

Full text
Author(s):
Ortega, Julieth Orduna [1, 2] ; Mora Vargas, Jorge Andres [1] ; Perrone, Olavo Micali [1] ; Metzker, Gustavo [1] ; Gomes, Eleni [1] ; da Silva, Roberto [1] ; Boscolo, Mauricio [1]
Total Authors: 7
Affiliation:
[1] Sao Paulo State Univ UNESP, Inst Biosci Humanities & Exact Sci, Sao Jose Do Rio Preto, SP - Brazil
[2] Univ Santiago Cali, Fac Ciencias Basicas, Campus Pampalinda, Santiago De Cali - Colombia
Total Affiliations: 2
Document type: Journal article
Source: INDUSTRIAL CROPS AND PRODUCTS; v. 145, MAR 2020.
Web of Science Citations: 6
Abstract

In the present study, sugarcane straw residue (SCS) is used to generate fermentable sugars. Impregnation in different media and ozonolysis were combined for SCS treatment. The best results were obtained for the basic medium (80 degrees C at atmospheric pressure for 8 h) followed by ozonolysis (rotary reactor, ozone concentration of 0.24% (w/w), 60 min of reaction and 35% moisture content). Increasing the ozone concentration from 0.24% to 1.3% (w/w) did not increase the amount of glucose released (yields of 60.8 and 60.2%, respectively) indicating that no high ozone concentrations are required. The chemical characterization of the treated material showed that there were no losses due to holocellulose dissolution. In contrast, the cellulose and hemicellulose content increased by 75% and 42%, respectively when compared to the raw material, while the lignin content decreased by 47%. Samples subjected to ozonolysis showed the greatest reduction in the recalcitrance to enzymatic hydrolysis, reaching 60 and 71% of yield in glucose and xylose conversion, respectively, when compared to the impregned material (26 and 31% respectively) and the raw material (4 and 5%). (AU)

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
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: 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: 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