Comparative evaluation of acid and alkaline sulfite pretreatments for enzymatic saccharification of bagasses from three different sugarcane hybrids (2018)
- Authors:
- USP affiliated authors: FERRAZ, ANDRÉ LUIS - EEL ; MILAGRES, ADRIANE MARIA FERREIRA - EEL
- Unidade: EEL
- Sigla do Departamento: LOT
- DOI: 10.1002/btpr.2647
- Subjects: CANA-DE-AÇÚCAR; LIGNINA; BAGAÇOS; ENZIMAS HIDROLÍTICAS; SACARIFICAÇÃO
- Keywords: enzymatic hydrolysis; sugarcane bagasse; sulfite pretreatment; xylan; lignin; saccharification
- Agências de fomento:
- Language: Inglês
- Abstract: Sugarcane bagasses from three experimental sugarcane hybrids and a mill-reference sample were used to compare the efficiency and mode of action of acid and alkaline sulfite pretreatment processes. Varied chemical loads and reaction temperatures were used to prepare samples with distinguished characteristics regarding xylan and lignin removals, as well as sulfonation levels of residual lignins. The pretreatment with low sulfite loads (5%) under acidic conditions (pH 2) provided maximum glucose yield of 70% during enzymatic hydrolysis with cellulases (10 FPU/g) and β-glucosidases (20 UI/g bagasse). In this case, glucan enzymatic conversion from pretreated materials was mostly associated with extensive xylan removal (70–100%) and partial delignification occurred during the pretreatment. The use of low sulfite loads under acidic conditions required pretreatment temperatures of 160°C. In contrast, at a lower pretreatment temperature (120°C), alkaline sulfite process achieved similar glucan digestibility, but required a higher sulfite load (7.5%). Residual xylans from acid pretreated materials were almost completely hydrolysed by commercial enzymes, contrasting with relatively lower xylan to xylose conversions observed in alkaline pretreated samples. Efficient xylan removal during acid sulfite pretreatment and during enzymatic digestion can be useful to enhance glucan accessibility and digestibility by cellulases. Alkaline sulfite process also provided substrates with high glucan digestibility, mainly associated with delignification and sulfonation of residual lignins. The results demonstrate that temperature, pH, and sulfite can be combined for reducing lignocellulose recalcitrance and achieve similar glucan conversion rates in the alkaline and acid sulfite pretreated bagasses.
- Imprenta:
- Publisher: AIChe
- Publisher place: West Laffayette
- Date published: 2018
- Source:
- Título: Biotechnology Progress
- ISSN: 8756-7938
- Volume/Número/Paginação/Ano: v. 34, n. 4, p. 943-951, 2018
- Este periódico é de assinatura
- Este artigo NÃO é de acesso aberto
- Cor do Acesso Aberto: closed
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ABNT
MONTE, Joseana Rocha do et al. Comparative evaluation of acid and alkaline sulfite pretreatments for enzymatic saccharification of bagasses from three different sugarcane hybrids. Biotechnology Progress, v. 34, n. 4, p. 943-951, 2018Tradução . . Disponível em: https://doi.org/10.1002/btpr.2647. Acesso em: 27 dez. 2025. -
APA
Monte, J. R. do, Friend, D. F. L., Mussatto, S. I., Ferraz, A. L., & Milagres, A. M. F. (2018). Comparative evaluation of acid and alkaline sulfite pretreatments for enzymatic saccharification of bagasses from three different sugarcane hybrids. Biotechnology Progress, 34( 4), 943-951. doi:10.1002/btpr.2647 -
NLM
Monte JR do, Friend DFL, Mussatto SI, Ferraz AL, Milagres AMF. Comparative evaluation of acid and alkaline sulfite pretreatments for enzymatic saccharification of bagasses from three different sugarcane hybrids [Internet]. Biotechnology Progress. 2018 ; 34( 4): 943-951.[citado 2025 dez. 27 ] Available from: https://doi.org/10.1002/btpr.2647 -
Vancouver
Monte JR do, Friend DFL, Mussatto SI, Ferraz AL, Milagres AMF. Comparative evaluation of acid and alkaline sulfite pretreatments for enzymatic saccharification of bagasses from three different sugarcane hybrids [Internet]. Biotechnology Progress. 2018 ; 34( 4): 943-951.[citado 2025 dez. 27 ] Available from: https://doi.org/10.1002/btpr.2647 - Sugarcane hybrids with original low lignin contents and high field productivity are useful to reach high glucose yields from bagasse
- Topochemical characterization of sugar cane pretreated with alkaline sulfite
- Topochemical characterization of sugar cane pretreated with alkaline sulfite
- Fate of p-hydroxycinnamates and structural characteristics of residual hemicelluloses and lignin during alkaline-sulfite chemithermomechanical pretreatment of sugarcane bagasse
- Anatomic and ultrastructural characteristics of different regions of sugar cane internodes which affect their response to alkaline-sulfite pretreatment and material recalcitrance
- In site produced and Commercially alkali-active xylanases compared for xylan exxtraction from sugarcane bagasse
- Limitation of cellulose accessibility and unproductive binding of cellulases by pretreated sugarcane bagasse lignin
- Techno-economic impacts of varied compositional profiles of sugarcane experimental hybrids on a biorefinery producing sugar, ethanol and electricity
- Processo de fracionamento do caule de gramíneas e uso das frações obtidas
- The secretome of two representative lignocellulose-decay basidiomycetes growing on sugarcane bagasse solid-state cultures
Informações sobre o DOI: 10.1002/btpr.2647 (Fonte: oaDOI API)
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