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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agroenergia. Para informações adicionais entre em contato com cnpae.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
03/09/2021 |
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Data da última atualização: |
03/09/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PACHECO, T. F.; MACHADO, B. R. C.; MORAIS JÚNIOR, W. G. de; ALMEIDA, J. R. M. de; GONCALVES, S. B. |
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Afiliação: |
THALYTA FRAGA PACHECO, CNPAE; BRENO R. C. MACHADO; WILSON G. DE MORAIS JÚNIOR, Instituto Politécnico do Porto; JOAO RICARDO MOREIRA DE ALMEIDA, CNPAE; SILVIA BELEM GONCALVES, CNPAE. |
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Título: |
Enhanced tolerance of Spathaspora passalidarum to sugarcane bagasse hydrolysate for ethanol production from xylose. |
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Complemento do título: |
. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Applied Biochemistry and Biotechnology, v. 193, n. 7, p. 2182-2197, July 2021. |
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Descrição Física: |
PDF: il. |
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DOI: |
https://doi.org/10.1007/s12010-021-03544-6 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: During the pretreatment and hydrolysis of lignocellulosic biomass to obtain a hydrolysate rich in fermentable sugars, furaldehydes (furfural and hydroxymethylfurfural), phenolic compounds, and organic acids are formed and released. These compounds inhibit yeast metabolism, reducing fermentation yields and productivity. This study initially confirmed the ability of Spathaspora passalidarum to ferment xylose and demonstrated its sensibility to the inhibitors present in the hemicellulosic sugarcane bagasse hydrolysate. Then, an adaptive laboratory evolution, with progressive increments of hydrolysate concentration, was employed to select a strain more resistant to hydrolysate inhibitors. Afterward, a central composite design was performed to maximize ethanol production using hydrolysate as substrate. At optimized conditions (initial cell concentration of 30 g/L), S. passalidarum was able to produce 19.4 g/L of ethanol with productivity, yield, and xylose consumption rate of 0.8 g/L.h and 0.4 g/g, respectively, in a sugarcane bagasse hemicellulosic hydrolysate. A kinetic model was developed to describe the inhibition of fermentation by substrate and product. The values obtained for substrate saturation and inhibition constant were Ks = 120.4 g/L and Ki = 1293.4 g/L. Ethanol concentration that stops cell growth was 30.1 g/L. There was an agreement between simulated and experimental results, with a residual standard deviation lower than 6%. |
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Palavras-Chave: |
Spathaspora passalidarum. |
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Thesagro: |
Biomassa; Cana de Açúcar; Hidrolise. |
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Thesaurus Nal: |
Biomass; Evolutionary adaptation; Hydrolysates; Lignocellulose; Sugarcane; Xylose. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 02441naa a2200313 a 4500
001 2134053
005 2021-09-03
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s12010-021-03544-6$2DOI
100 1 $aPACHECO, T. F.
245 $aEnhanced tolerance of Spathaspora passalidarum to sugarcane bagasse hydrolysate for ethanol production from xylose.$h[electronic resource]
260 $c2021
300 $cPDF: il.
520 $aAbstract: During the pretreatment and hydrolysis of lignocellulosic biomass to obtain a hydrolysate rich in fermentable sugars, furaldehydes (furfural and hydroxymethylfurfural), phenolic compounds, and organic acids are formed and released. These compounds inhibit yeast metabolism, reducing fermentation yields and productivity. This study initially confirmed the ability of Spathaspora passalidarum to ferment xylose and demonstrated its sensibility to the inhibitors present in the hemicellulosic sugarcane bagasse hydrolysate. Then, an adaptive laboratory evolution, with progressive increments of hydrolysate concentration, was employed to select a strain more resistant to hydrolysate inhibitors. Afterward, a central composite design was performed to maximize ethanol production using hydrolysate as substrate. At optimized conditions (initial cell concentration of 30 g/L), S. passalidarum was able to produce 19.4 g/L of ethanol with productivity, yield, and xylose consumption rate of 0.8 g/L.h and 0.4 g/g, respectively, in a sugarcane bagasse hemicellulosic hydrolysate. A kinetic model was developed to describe the inhibition of fermentation by substrate and product. The values obtained for substrate saturation and inhibition constant were Ks = 120.4 g/L and Ki = 1293.4 g/L. Ethanol concentration that stops cell growth was 30.1 g/L. There was an agreement between simulated and experimental results, with a residual standard deviation lower than 6%.
650 $aBiomass
650 $aEvolutionary adaptation
650 $aHydrolysates
650 $aLignocellulose
650 $aSugarcane
650 $aXylose
650 $aBiomassa
650 $aCana de Açúcar
650 $aHidrolise
653 $aSpathaspora passalidarum
700 1 $aMACHADO, B. R. C.
700 1 $aMORAIS JÚNIOR, W. G. de
700 1 $aALMEIDA, J. R. M. de
700 1 $aGONCALVES, S. B.
773 $tApplied Biochemistry and Biotechnology$gv. 193, n. 7, p. 2182-2197, July 2021.
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Registro original: |
Embrapa Agroenergia (CNPAE) |
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| Registros recuperados : 3 | |
| 1. |  | SILVA, D. M.; BUENO, A. F.; FRANÇA, L. F. T.; MANTOVANI, M. A. M.; STECCA, S. C.; LEITE, N.; OLIVEIRA, M. C. N.; MOSCARDI, F. Biologia e preferência alimentar de spodoptera frugiperda (Lepidoptera: noctuidae) em diferentes fontes hospedeiras. In: CONGRESSO BRASILEIRO DE SOJA, 6., 2012, Cuiabá. Soja: integração nacional e desenvolvimento sustentável: anais. Brasília, DF: Embrapa, 2012. 6 p. 1 CD-ROM.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 2. | | MANTOVANI, M. A. M.; STECCA, S. C.; FRANÇA, L. F. T.; ZIRONDI, D.; SILVA, D. M.; LEITE, N.; BUENO, A. F.; PASINI, A. Seletividade de inseticidas a adultos de Podisus nigrispinus em condições de laboratório. JORNADA ACADÊMICA DA EMBRAPA SOJA, 7., 2012, Londrina. Resumos expandidos... Londrina: Embrapa Soja, 2012. p. 119-123. (Embrapa Soja. Documentos, 333). Editado por Paula Gerón Saiz de Mello. Disponível em: .| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 3. | | FRANÇA, L. F. T.; SILVA, D. M.; MANTOVANI, M. A. M.; STECCA, S. C.; LEITE, N.; BUENO, A. F.; MOSCARDI, F. Preferência de oviposição de Spodoptera frugiperda (Lepidoptera: noctuidae) em diferentes plantas hospedeiras. JORNADA ACADÊMICA DA EMBRAPA SOJA, 7., 2012, Londrina. Resumos expandidos... Londrina: Embrapa Soja, 2012. p. 115-118. (Embrapa Soja. Documentos, 333). Editado por Paula Gerón Saiz de Mello. Disponível em: .| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 3 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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