Pre-Treatment Combined H2SO4/H2O2/NaOH to Obtain the Lignocellulosic Fractions of Sugarcane Bagasse

Assumpção, Samira M. N. de; Pontes, Luiz Antônio Magalhães; Carvalho, Luciene Santos de; Campos, Leila Maria Aguilera; Andrade, José Carlos; Silva, Etemistocles G. da

doi:10.5935/1984-6835.20160059

Cited by 8 publications

(3 citation statements)

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“…This kind of pretreatment is used to hydrolyze xylan into xylose, consequently making cellulose the most accessible material to enzyme action 20,24 . Diluted sulfuric acid is advantageous regarding the removal of the hemicellulosic fraction, with low cellulose degradation 25 . Such acid pretreatment offers the advantage of high yield in the amount of glucose with later enzymatic hydrolysis and solubilization of xylan 11 …”

Section: Resultsmentioning

confidence: 99%

Sieving process selects sugarcane bagasse with lower recalcitrance to xylan solubilization

Alves

Melati

Casagrande

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUNDSugarcane bagasse is a heterogeneous and organized material that needs a pretreatment to access the polysaccharides (cellulose and xylan). The particle size of a non‐milled bagasse can influence the xylan and xylose solubilization, as well as the enzymatic hydrolysis of the pretreated material. Using bagasse selected on 16‐, 30‐, 40‐ and 50‐mesh sieves: xylan solubilization was performed with hydrogen peroxide; xylose was solubilized with diluted sulfuric acid; and enzymatic hydrolysis was conducted for glucose yield evaluation.RESULTSThe xylose solubilized by acid pretreatment resulted in a maximum of 6.59 g L−1 with no influence of particle size. The solubilized xylan showed linear correlation with a variation of 36.18% (16‐mesh bagasse) to 71.43% (<50‐mesh bagasse). Pretreated material submitted to enzymatic hydrolysis revealed that particle size influenced the pretreatment, increasing the glucose yield.CONCLUSIONSThe results showed that non‐milled sugarcane bagasse particle size selection positively influenced the solubilization of xylan, improving the enzymatic hydrolysis of the pretreated material. © 2020 Society of Chemical Industry (SCI)

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Section: Resultsmentioning

confidence: 99%

Sieving process selects sugarcane bagasse with lower recalcitrance to xylan solubilization

Alves

Melati

Casagrande

et al. 2020

J of Chemical Tech & Biotech

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“…The cross-arrangement of the bonds in polymers that form the vegetal fiber, as hemicellulose, for example, gives less resistance to the degradation of this carbohydrate in the rumen in comparison to cellulose. In sugarcane bagasse, the fibrous fraction is well organized with smooth, compact fibers and without rupture, due to the presence of the protective layer formed by lignins and hemicellulose (Assumpção et al 2016). Therefore, the greater the presence of these components, the more difficult it is to digest the material because the presence of lignin in vegetal tissue impair fiber digestibility as a whole.…”

Section: Biochemical Data Of the Fibersmentioning

confidence: 99%

Sugarcane as a forage plant: Structural and chemical traits that affect fiber quality

Marques

Aferri

Montanha

et al. 2021

BioRes

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Sugarcane is widely used as feed for cattle, buffalo, goats, and sheep, primarily during drought periods. Some sugarcane cultivars contain low digestibility fibers, which compromises animal performance. Thus, the present study reports on anatomical, chemical, and elemental analysis along stem internodes of two sugarcane cultivars to better understand the structure-digestibility relationship of industrial cultivar cv. IACSP95-5000 compared to a forage cultivar (cv. IAC86-2480). X-ray microdensitometry assays revealed that the peripheral tissues of IACSP95-5000 were denser than IAC86-2480. In the first internode, cv. IACSP95-5000 has more vascular bundles and occupy a larger area. In addition, it had more fibers surrounding the vascular bundles compared to cv. IAC86-2480. However, fibers are prominent at the fifth internode in both cultivars but are more evident in cv. IACSP95-5000. The microprobe X-ray fluorescence spectroscopy analysis showed that silicon and calcium elemental distribution were similar for both cultivars. The structural features of the forage sugarcane presented herein are able to explain the digestibility differences between cultivars.

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“…Os pré-tratamentos fazem com que as microfibrilas de celulose fiquem mais aparentes na estrutura lignocelulósica, facilitando o acesso das enzimas para a hidrólise, o que justifica o aumento na recuperação de glicose (GAO et al, 2013;LIU et al, 2016a). ASSUMPÇÃO et al, 2016). Quando se comparam as duas condições onde se tem H3BO3 presente, aparentemente tem-se uma maior remoção de lignina e hemicelulose (maior desestruturação) quando se tem 1% de H3BO3 (Figura 27) com relação à condição onde se tem 2% de H3BO3 (Figura 28).…”

Section: Análise De Microscopia De Varredura (Mev)unclassified

Pré-tratamento organosolve de palha de soja visando a produção de etanol de segunda geração

Salles¹

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Aos meus pais que me deram forças, conselhos e estrutura para enfrentar as diversidades da vida e a Deus por estar sempre comigo nessa caminhada.À minha esposa e filha que estão ao meu lado, me motivando a buscar meus objetivos. Ao meu orientador, professor Dr. Fernando Gustavo Tonin, que me passou conhecimento, me auxiliou nas manipulações experimentais e possibilitou o término deste trabalho diante das limitações da pandemia que se passaram no momento do desenvolvimento deste trabalho. À técnica do Laboratório de Biocombustíveis e Química Aplicada da Faculdade de Engenharia de Alimentos e Zootecnia (FZEA), Dra. Josiane Gonçalves Borges, que me auxiliou nos experimentos no laboratório. À Coordenação de Aperfeiçoamento de Pessoal de Nível Superior -CAPES, pelo auxilio financeiro. Agradeço de forma geral a todos que estiveram comigo para o desenvolvimento e término deste trabalho. RESUMO SALLES, J. D. Pré-tratamento organosolve de palha de soja visando a produção de etanol de segunda geração. 2022. 107 f. Dissertação (Mestrado) -

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Pre-Treatment Combined H₂SO₄/H₂O₂/NaOH to Obtain the Lignocellulosic Fractions of Sugarcane Bagasse

Cited by 8 publications

References 0 publications

Sieving process selects sugarcane bagasse with lower recalcitrance to xylan solubilization

Sieving process selects sugarcane bagasse with lower recalcitrance to xylan solubilization

Sugarcane as a forage plant: Structural and chemical traits that affect fiber quality

Pré-tratamento organosolve de palha de soja visando a produção de etanol de segunda geração

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