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| Registros recuperados : 106 | |
| 3. |  | VAZ JUNIOR, S. Sugarcane-biorefinery. In: SCHEPER, T.; BELKIN, S.; BLEY, T.; BOHLMANN, J.; GU, M. B.; HU, W.-S.; MATTIASSON, B.; NIELSEN, J.; SEITZ, H.; ULBER, R.; ZENG, A.-P.; ZHONG, J.-J.; ZHOU, W. (Ed.). Advances in Biochemical Engineering/Biotechnology. Berlim: Springer, 2017. p. 1-12.| Biblioteca(s): Embrapa Agroenergia. |
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| Registros recuperados : 106 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Agroenergia. |
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Data corrente: |
16/08/2022 |
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Data da última atualização: |
16/08/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
BARBOSA, B. M.; VAZ JUNIOR, S.; COLODETTE, J. L.; AGUIAR, A. R. de; CABRAL, C. P. T.; FARIA, B. de F. H. de. |
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Afiliação: |
BIANCA MOREIRA BARBOSA, Universidade Federal de Viçosa; SILVIO VAZ JUNIOR, CNPAE; JORGE LUIZ COLODETTE, Universidade Federal de Viçosa; ALEX RAMOS DE AGUIAR, Universidade Federal de Viçosa; CARLA PRISCILA TÁVORA CABRAL, Universidade Federal do Amapá; BRUNO DE FREITAS HOMEM DE FARIA, Universidade Federal de Viçosa. |
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Título: |
Structural and chemical characterization of lignin and hemicellulose isolated from corn fibers toward agroindustrial residue valorization. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Cellulose, 2022. |
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DOI: |
https://doi.org/10.1007/s10570-022-04769-2 |
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Idioma: |
Inglês |
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Conteúdo: |
Corn fiber (CF) is an agroindustrial residue obtained from starch or corn syrup. Currently, there has been increasing research interest in lignocellulosic materials from these residual materials. Consequently, this paper is a novel approach that complements the structural and chemical characterizations already published in the literature for CF. In this study, isolation, chemical composition and characterization was conducted of hemicellulose by means of 1H NMR and FTIR-ATR and Klason lignin by means of acid soluble lignin (ASL) and acid insoluble lignin (AIL) determination using UV spectrophotometry and Py?GC‒MS. Hemicellulose was obtained after aqueous extraction, lipid removal, delignification and alkaline extraction. The isolated hemicellulose from CF confirmed the presence of arabinoxylan, which was similar to the results reported in the literature. The CF contained 8.0% and 4.0% ASL and AIL, respectively. Regarding lignin, the study identified more than 47 primary pyrolysis products for ASL, with 17%, 20% and 59% relative molar abundance for lignin, carbohydrates, and other products, respectively, and 39 primary pyrolysis products with 44% and 7% relative molar abundance for lignin and carbohydrates, respectively. The main products derived from lignin were phenol, 4-methylphenol, guaiacol, 4-vinilguaiacol, syringol and syringylaldehyde. The peaks of lignin derivatives indicated that the Klason method is effective for lignin isolation, and the Py? GC‒MS technique allowed for the identification of the presence of residual lignin in AIL and ASL from CF. In this context, lignocellulosic components of CF are chemically suitable for use as raw materials to transform biomass into high value-added products. MenosCorn fiber (CF) is an agroindustrial residue obtained from starch or corn syrup. Currently, there has been increasing research interest in lignocellulosic materials from these residual materials. Consequently, this paper is a novel approach that complements the structural and chemical characterizations already published in the literature for CF. In this study, isolation, chemical composition and characterization was conducted of hemicellulose by means of 1H NMR and FTIR-ATR and Klason lignin by means of acid soluble lignin (ASL) and acid insoluble lignin (AIL) determination using UV spectrophotometry and Py?GC‒MS. Hemicellulose was obtained after aqueous extraction, lipid removal, delignification and alkaline extraction. The isolated hemicellulose from CF confirmed the presence of arabinoxylan, which was similar to the results reported in the literature. The CF contained 8.0% and 4.0% ASL and AIL, respectively. Regarding lignin, the study identified more than 47 primary pyrolysis products for ASL, with 17%, 20% and 59% relative molar abundance for lignin, carbohydrates, and other products, respectively, and 39 primary pyrolysis products with 44% and 7% relative molar abundance for lignin and carbohydrates, respectively. The main products derived from lignin were phenol, 4-methylphenol, guaiacol, 4-vinilguaiacol, syringol and syringylaldehyde. The peaks of lignin derivatives indicated that the Klason method is effective for lignin isolation, and the Py? GC‒MS tech... Mostrar Tudo |
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Palavras-Chave: |
Agricultural residues; Bioproducts; Lignocellulosic biomass. |
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Thesaurus NAL: |
Green chemistry. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1145474/1/Silvio-Artigo-SEG-1.pdf
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Marc: |
LEADER 02518naa a2200241 a 4500
001 2145474
005 2022-08-16
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10570-022-04769-2$2DOI
100 1 $aBARBOSA, B. M.
245 $aStructural and chemical characterization of lignin and hemicellulose isolated from corn fibers toward agroindustrial residue valorization.$h[electronic resource]
260 $c2022
520 $aCorn fiber (CF) is an agroindustrial residue obtained from starch or corn syrup. Currently, there has been increasing research interest in lignocellulosic materials from these residual materials. Consequently, this paper is a novel approach that complements the structural and chemical characterizations already published in the literature for CF. In this study, isolation, chemical composition and characterization was conducted of hemicellulose by means of 1H NMR and FTIR-ATR and Klason lignin by means of acid soluble lignin (ASL) and acid insoluble lignin (AIL) determination using UV spectrophotometry and Py?GC‒MS. Hemicellulose was obtained after aqueous extraction, lipid removal, delignification and alkaline extraction. The isolated hemicellulose from CF confirmed the presence of arabinoxylan, which was similar to the results reported in the literature. The CF contained 8.0% and 4.0% ASL and AIL, respectively. Regarding lignin, the study identified more than 47 primary pyrolysis products for ASL, with 17%, 20% and 59% relative molar abundance for lignin, carbohydrates, and other products, respectively, and 39 primary pyrolysis products with 44% and 7% relative molar abundance for lignin and carbohydrates, respectively. The main products derived from lignin were phenol, 4-methylphenol, guaiacol, 4-vinilguaiacol, syringol and syringylaldehyde. The peaks of lignin derivatives indicated that the Klason method is effective for lignin isolation, and the Py? GC‒MS technique allowed for the identification of the presence of residual lignin in AIL and ASL from CF. In this context, lignocellulosic components of CF are chemically suitable for use as raw materials to transform biomass into high value-added products.
650 $aGreen chemistry
653 $aAgricultural residues
653 $aBioproducts
653 $aLignocellulosic biomass
700 1 $aVAZ JUNIOR, S.
700 1 $aCOLODETTE, J. L.
700 1 $aAGUIAR, A. R. de
700 1 $aCABRAL, C. P. T.
700 1 $aFARIA, B. de F. H. de
773 $tCellulose, 2022.
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