valuating the Potential of Culms from Sugarcane and Energy Cane Varieties Grown in Argentina for Second-Generation Ethanol Productio

Autor(es)

Kane, Aissata Ousmane ^[1] ; Pellergini, Vanessa O. Arnoldi ^[1] ; Espirito Santo, Melissa C. ^[1] ; Ngom, Balla Diop ^[2] ; Garcia, Jose M. ^{[3, 4]} ; Acevedo, Alberto ^[5] ; Erazzu, Luis E. ^[3] ; Polikarpov, Igor ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Sao Carlos Inst Phys, Trabalhador Sao Carlense, 400, BR-13566590 Sao Carlos, SP - Brazil

^[2] Univ Cheikh Anta Diop Dakar UCAD, Fac Sci & Techn, BP 5005, Dakar Fann Dakar - Senegal

^[3] Natl Inst Agr Technol INTA, Agr Expt Stn Famailla, San Miguel De Tucuman - Argentina

^[4] Ciudad Autonoma Buenos Aires, Natl Council Sci & Tech Res CONICET, Buenos Aires, DF - Argentina

^[5] Natl Inst Agr Technol INTA, Inst Soils, Buenos Aires, DF - Argentina

• Tipo de documento: Artigo Científico
• Fonte: WASTE AND BIOMASS VALORIZATION; v. 13, n. 1, SI JUL 2021.
• Citações Web of Science: 0

Resumo

The efficient transformation of lignocellulosic biomass into fermentable sugars is essential for building bioeconomies. Sugarcane is an important agricultural crop in a number of Latin American countries, including Brazil and Argentina. Herein culms from two different sugarcane (SC384 and SC724) and two energy cane varieties (EC3116 and EC3118) bred in Argentina were evaluated for sustainable production of second-generation biofuels and green chemicals. Changes in the biomass crystallinity, structure, and morphology introduced by pretreatments were investigated using X-ray diffraction (DRX), confocal laser scanning microscopy (CLSM), and scanning electron microscopy (SEM) techniques. Enzymatic hydrolysis yields of untreated and pretreated sugarcane and energy cane culms were determined and correlated with physical analyses and chemical composition characterizations. Overall, after combined acid and alkali pretreatment, enzymatic convertibility was highly efficient for all studied sugarcane and energy cane varieties, reaching over 97% of theoretical conversion yields. High crystallinity indices and crystallite sizes of pretreated culms and SEM results and CLSM were consistent with the removal of lignin, solubilization of hemicellulose, and amorphous parts of lignocellulose imprinted by the pretreatments. High potential of culms from sugarcane and energy cane varieties cultivated in Argentina for sustainable production of renewable lignocellulosic sugars and their transformation into green chemicals and fuels was demonstrated. (AU)

• Processo FAPESP: 15/13684-0 - Estudos estruturais e funcionais de enzimas que participam na síntese e degradação de carboidratos complexos
• Beneficiário: Igor Polikarpov
• Modalidade de apoio: Auxílio à Pesquisa - Temático