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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
18/11/2025 |
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Data da última atualização: |
27/11/2025 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MENDES, P. B.; SILVA, J. T. da; CAROLINO, J. M.; MIGUEL, R. de A.; SIMEONE, M. L. F.; QUEIROZ, V. A. V.; MENEZES, C. B. de; MACHADO, A. R. T.; PIMENTA, L. P. S. |
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Afiliação: |
PABLO BATISTA MENDES, UNIVERSIDADE FEDERAL DE MINAS GERAIS; JÉSSIKA THAYANNE DA SILVA, UNIVERSIDADE FEDERAL DE MINAS GERAIS; JÚLIA MARTINS CAROLINO, UNIVERSIDADE DO ESTADO DE MINAS GERAIS; RAFAEL DE ARAUJO MIGUEL, CNPMS; MARIA LUCIA FERREIRA SIMEONE, CNPMS; VALERIA APARECIDA VIEIRA QUEIROZ, CNPMS; CICERO BESERRA DE MENEZES, CNPMS; ALAN RODRIGUES TEIXEIRA MACHADO, UNIVERSIDADE DO ESTADO DE MINAS GERAIS; LÚCIA PINHEIRO SANTOS PIMENTA, UNIVERSIDADE FEDERAL DE MINAS GERAIS. |
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Título: |
Influence of sorghum grain tannin content on the composition and properties of pyrolysis products. |
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Ano de publicação: |
2026 |
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Fonte/Imprenta: |
Biomass & Bioenergy, v. 206, 108642, 2026. |
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DOI: |
https://doi.org/10.1016/j.biombioe.2025.108642 |
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Idioma: |
Inglês |
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Conteúdo: |
This study investigated whether the chemical composition of different sorghum, especially the grain tannin content, influences the thermal behavior and the pyrolysis products. Two hypotheses were evaluated: (1) the pyrolysis of grains with high tannin contents results in bio-oils with greater antioxidant capacity, and (2) the biochars obtained from these grains have higher carbon yields. Four sorghum genotypes, two lines (SC084 and CMSXS180) and two hybrids (BRS305 and BR501), were subjected to pyrolysis in a tubular furnace, and the resulting bio-oils and biochars were characterized via elemental analysis, chromatographic, thermal, spectroscopic, and microscopic techniques. The SC084 and BRS305 samples presented the highest tannin contents (94.89 and 56.46 mg g− 1 ) and total phenolic contents (37.26 and 22.15 mg gallic acid equivalents g− 1 ), whereas tannins were not detected in BR501 and CMSXS180, which were therefore classified as tannin-free genotypes. The sample obtained from the pyrolysis of SC084 had the highest antioxidant activity (67.7 % at 1000 μg mL− 1 ) and phenolic content (218.71 mg g− 1 ), whereas BR501, with a tannin content below the quantification limit, presented a high phenolic content (202.3 mg g− 1 ). These results indicate that the first hypothesis was not confirmed, as the antioxidant activity of the bio-oils was not solely determined by the tannin content of the sorghum grains. Analyses by 1 H NMR and GC/MS confirmed the compositional differences. Moreover, the biochars from SC084 and BRS305 presented the highest carbon contents (75.88 % and 75.33 %, respectively), supporting the second hypothesis. The findings show that the chemical structure and thermal properties govern pyrolysis. MenosThis study investigated whether the chemical composition of different sorghum, especially the grain tannin content, influences the thermal behavior and the pyrolysis products. Two hypotheses were evaluated: (1) the pyrolysis of grains with high tannin contents results in bio-oils with greater antioxidant capacity, and (2) the biochars obtained from these grains have higher carbon yields. Four sorghum genotypes, two lines (SC084 and CMSXS180) and two hybrids (BRS305 and BR501), were subjected to pyrolysis in a tubular furnace, and the resulting bio-oils and biochars were characterized via elemental analysis, chromatographic, thermal, spectroscopic, and microscopic techniques. The SC084 and BRS305 samples presented the highest tannin contents (94.89 and 56.46 mg g− 1 ) and total phenolic contents (37.26 and 22.15 mg gallic acid equivalents g− 1 ), whereas tannins were not detected in BR501 and CMSXS180, which were therefore classified as tannin-free genotypes. The sample obtained from the pyrolysis of SC084 had the highest antioxidant activity (67.7 % at 1000 μg mL− 1 ) and phenolic content (218.71 mg g− 1 ), whereas BR501, with a tannin content below the quantification limit, presented a high phenolic content (202.3 mg g− 1 ). These results indicate that the first hypothesis was not confirmed, as the antioxidant activity of the bio-oils was not solely determined by the tannin content of the sorghum grains. Analyses by 1 H NMR and GC/MS confirmed the compositional differences.... Mostrar Tudo |
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Palavras-Chave: |
Conversão termoquímica; Pirólise. |
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Thesagro: |
Biomassa; Condicionador do Solo; Sorghum Bicolor; Sorgo; Tanino. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02680naa a2200313 a 4500
001 2181642
005 2025-11-27
008 2026 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.biombioe.2025.108642$2DOI
100 1 $aMENDES, P. B.
245 $aInfluence of sorghum grain tannin content on the composition and properties of pyrolysis products.$h[electronic resource]
260 $c2026
520 $aThis study investigated whether the chemical composition of different sorghum, especially the grain tannin content, influences the thermal behavior and the pyrolysis products. Two hypotheses were evaluated: (1) the pyrolysis of grains with high tannin contents results in bio-oils with greater antioxidant capacity, and (2) the biochars obtained from these grains have higher carbon yields. Four sorghum genotypes, two lines (SC084 and CMSXS180) and two hybrids (BRS305 and BR501), were subjected to pyrolysis in a tubular furnace, and the resulting bio-oils and biochars were characterized via elemental analysis, chromatographic, thermal, spectroscopic, and microscopic techniques. The SC084 and BRS305 samples presented the highest tannin contents (94.89 and 56.46 mg g− 1 ) and total phenolic contents (37.26 and 22.15 mg gallic acid equivalents g− 1 ), whereas tannins were not detected in BR501 and CMSXS180, which were therefore classified as tannin-free genotypes. The sample obtained from the pyrolysis of SC084 had the highest antioxidant activity (67.7 % at 1000 μg mL− 1 ) and phenolic content (218.71 mg g− 1 ), whereas BR501, with a tannin content below the quantification limit, presented a high phenolic content (202.3 mg g− 1 ). These results indicate that the first hypothesis was not confirmed, as the antioxidant activity of the bio-oils was not solely determined by the tannin content of the sorghum grains. Analyses by 1 H NMR and GC/MS confirmed the compositional differences. Moreover, the biochars from SC084 and BRS305 presented the highest carbon contents (75.88 % and 75.33 %, respectively), supporting the second hypothesis. The findings show that the chemical structure and thermal properties govern pyrolysis.
650 $aBiomassa
650 $aCondicionador do Solo
650 $aSorghum Bicolor
650 $aSorgo
650 $aTanino
653 $aConversão termoquímica
653 $aPirólise
700 1 $aSILVA, J. T. da
700 1 $aCAROLINO, J. M.
700 1 $aMIGUEL, R. de A.
700 1 $aSIMEONE, M. L. F.
700 1 $aQUEIROZ, V. A. V.
700 1 $aMENEZES, C. B. de
700 1 $aMACHADO, A. R. T.
700 1 $aPIMENTA, L. P. S.
773 $tBiomass & Bioenergy$gv. 206, 108642, 2026.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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