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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
11/11/2019 |
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Data da última atualização: |
10/06/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MALUCELLI, L. C.; LOMONACO, D.; CARVALHO FILHO, M. A. S.; MAGALHAES, W. L. E. |
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Afiliação: |
Lucca C. Malucelli, Universidade Posistivo; Diego Lomonaco, Universidade Federal do Ceará; Marco A. S. Carvalho Filho, Universidade Positivo; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Cellulose triacetate from different sources: modification assessment through thermal and chemical characterization. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Holzforschung, v. 74, n. 5, p. 505-512, 2020. |
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DOI: |
https://doi.org/10.1515/hf-2019-0035 |
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Idioma: |
Inglês |
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Conteúdo: |
Modification techniques have been widely employed to improve cellulose properties, thus increasing the diversity of industrial applications. While wood pulp cellulose is the most common source for industrial production, little has been studied about the effects of the cellulose source and its purity on modification. Therefore, this article investigates the influence of cellulose source (e.g. wood or cotton) on its modification (acetylation), by estimating the obtained degree of substitution (DS) through Fourier-transform infrared (FT-IR), proton nuclear magnetic resonance (1H NMR) and back titration. The intense reduction in samples? crystallinity after acetylation was a result of breakage of inter- and intra-molecular hydrogen bonds, thus confirming acetylation. Although Avicel showed the highest cellulose content and was virtually free of hemicellulose and lignin, this did not affect the acetylation degree, as all samples were successfully triacetylated. The techniques used in this study were ideal for detecting acetylation and estimating the DS, which makes them good tools for modification studies of cellulose derivatives. |
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Palavras-Chave: |
Acetato de celulose; Acetilação; Cellulose derivatives; Derivados de celulose; Esterificação. |
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Thesaurus Nal: |
Acetylation; Cellulose acetate; Esterification. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01983naa a2200265 a 4500
001 2114147
005 2020-06-10
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1515/hf-2019-0035$2DOI
100 1 $aMALUCELLI, L. C.
245 $aCellulose triacetate from different sources$bmodification assessment through thermal and chemical characterization.$h[electronic resource]
260 $c2020
520 $aModification techniques have been widely employed to improve cellulose properties, thus increasing the diversity of industrial applications. While wood pulp cellulose is the most common source for industrial production, little has been studied about the effects of the cellulose source and its purity on modification. Therefore, this article investigates the influence of cellulose source (e.g. wood or cotton) on its modification (acetylation), by estimating the obtained degree of substitution (DS) through Fourier-transform infrared (FT-IR), proton nuclear magnetic resonance (1H NMR) and back titration. The intense reduction in samples? crystallinity after acetylation was a result of breakage of inter- and intra-molecular hydrogen bonds, thus confirming acetylation. Although Avicel showed the highest cellulose content and was virtually free of hemicellulose and lignin, this did not affect the acetylation degree, as all samples were successfully triacetylated. The techniques used in this study were ideal for detecting acetylation and estimating the DS, which makes them good tools for modification studies of cellulose derivatives.
650 $aAcetylation
650 $aCellulose acetate
650 $aEsterification
653 $aAcetato de celulose
653 $aAcetilação
653 $aCellulose derivatives
653 $aDerivados de celulose
653 $aEsterificação
700 1 $aLOMONACO, D.
700 1 $aCARVALHO FILHO, M. A. S.
700 1 $aMAGALHAES, W. L. E.
773 $tHolzforschung$gv. 74, n. 5, p. 505-512, 2020.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
18/05/2022 |
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Data da última atualização: |
24/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
LIMA, L. R. L.; GONÇALVES-VIDIGAL, M. C.; BISNETA, M. V.; VALENTINI, G.; VIDIGAL FILHO, P. S.; MARTINS, V. da S. R.; SOUZA, T. L. P. O. de. |
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Afiliação: |
LAÍZE RAPHAELLE LEMOS LIMA; MARIA CELESTE GONÇALVES-VIDIGAL; MARIANA VAZ BISNETA; GISELI VALENTINI; PEDRO SOARES VIDIGAL FILHO; VANUSA DA SILVA RAMOS MARTINS; THIAGO LIVIO PESSOA OLIV DE SOUZA, CNPAF. |
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Título: |
Genetic fine-mapping of anthracnose disease-resistance allele Co-14 present in the Andean common bean cultivar AND 277. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Crop Science, 2023. |
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ISSN: |
0011-183X |
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DOI: |
https://doi.org/10.1002/csc2.20905 |
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Idioma: |
Inglês |
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Conteúdo: |
Anthracnose (ANT) is among the common bean fungal diseases responsible for significant yield and grain quality losses. Durable genetic resistance is the primary ANT control method due to the pathogen's high variability. Genetic studies showed that the common bean chromosome Pv01 contains multiple disease resistance genes, including the ANT resistance loci Co-1 (Co-12, Co-13, Co-14, Co-15, Co-1HY, and Co-1x), Co-AC, Co-14, Co-Pa, Co-Perla, Co-w, Co-x, and CoPv01CDRK. This work aimed to: (i) perform the genetic fine-mapping of the Co-14 allele present in the cultivar AND 277, using recombinant inbreeding lines derived from the cross between Rudá × AND 277; and (ii) identify candidate resistance genes in the Co-14 allele based on the common bean reference genome. Initially, the Co-14 allele was mapped between the single-nucleotide polymorphism markers ss715645251 and ss715645250 at a distance of 2.0 and 19.6 cM, respectively. Fine-mapping localized Co-14 between the markers ss715645251 and BARCPVSSR01356, spanning a 40.51 kb region at the end of Pv01. Two genes are described within the Co-14 region in the reference genome, Phvul.001G243800 and Phvul.001G243900. The linkage between the Co-14 allele and the markers ss715645251 and BARCPVSSR01356 will be essential for plant breeding programs during the resistance gene transfer to elite cultivars via marker-assisted selection (MAS). Identifying and functionally analyzing candidate resistance genes in this region will allow more efficient MAS by developing accurate markers for ANT resistance. MenosAnthracnose (ANT) is among the common bean fungal diseases responsible for significant yield and grain quality losses. Durable genetic resistance is the primary ANT control method due to the pathogen's high variability. Genetic studies showed that the common bean chromosome Pv01 contains multiple disease resistance genes, including the ANT resistance loci Co-1 (Co-12, Co-13, Co-14, Co-15, Co-1HY, and Co-1x), Co-AC, Co-14, Co-Pa, Co-Perla, Co-w, Co-x, and CoPv01CDRK. This work aimed to: (i) perform the genetic fine-mapping of the Co-14 allele present in the cultivar AND 277, using recombinant inbreeding lines derived from the cross between Rudá × AND 277; and (ii) identify candidate resistance genes in the Co-14 allele based on the common bean reference genome. Initially, the Co-14 allele was mapped between the single-nucleotide polymorphism markers ss715645251 and ss715645250 at a distance of 2.0 and 19.6 cM, respectively. Fine-mapping localized Co-14 between the markers ss715645251 and BARCPVSSR01356, spanning a 40.51 kb region at the end of Pv01. Two genes are described within the Co-14 region in the reference genome, Phvul.001G243800 and Phvul.001G243900. The linkage between the Co-14 allele and the markers ss715645251 and BARCPVSSR01356 will be essential for plant breeding programs during the resistance gene transfer to elite cultivars via marker-assisted selection (MAS). Identifying and functionally analyzing candidate resistance genes in this region will allow more eff... Mostrar Tudo |
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Palavras-Chave: |
Andean common bean. |
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Thesagro: |
Antracnose; Doença de Planta; Feijão; Phaseolus Vulgaris; Resistência. |
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Thesaurus NAL: |
Anthracnose; Fungal diseases of plants; Genetics; Plant breeding. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1143200/1/cs-2023-2.pdf
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Marc: |
LEADER 02555naa a2200337 a 4500
001 2143200
005 2023-03-24
008 2023 bl uuuu u00u1 u #d
022 $a0011-183X
024 7 $ahttps://doi.org/10.1002/csc2.20905$2DOI
100 1 $aLIMA, L. R. L.
245 $aGenetic fine-mapping of anthracnose disease-resistance allele Co-14 present in the Andean common bean cultivar AND 277.$h[electronic resource]
260 $c2023
520 $aAnthracnose (ANT) is among the common bean fungal diseases responsible for significant yield and grain quality losses. Durable genetic resistance is the primary ANT control method due to the pathogen's high variability. Genetic studies showed that the common bean chromosome Pv01 contains multiple disease resistance genes, including the ANT resistance loci Co-1 (Co-12, Co-13, Co-14, Co-15, Co-1HY, and Co-1x), Co-AC, Co-14, Co-Pa, Co-Perla, Co-w, Co-x, and CoPv01CDRK. This work aimed to: (i) perform the genetic fine-mapping of the Co-14 allele present in the cultivar AND 277, using recombinant inbreeding lines derived from the cross between Rudá × AND 277; and (ii) identify candidate resistance genes in the Co-14 allele based on the common bean reference genome. Initially, the Co-14 allele was mapped between the single-nucleotide polymorphism markers ss715645251 and ss715645250 at a distance of 2.0 and 19.6 cM, respectively. Fine-mapping localized Co-14 between the markers ss715645251 and BARCPVSSR01356, spanning a 40.51 kb region at the end of Pv01. Two genes are described within the Co-14 region in the reference genome, Phvul.001G243800 and Phvul.001G243900. The linkage between the Co-14 allele and the markers ss715645251 and BARCPVSSR01356 will be essential for plant breeding programs during the resistance gene transfer to elite cultivars via marker-assisted selection (MAS). Identifying and functionally analyzing candidate resistance genes in this region will allow more efficient MAS by developing accurate markers for ANT resistance.
650 $aAnthracnose
650 $aFungal diseases of plants
650 $aGenetics
650 $aPlant breeding
650 $aAntracnose
650 $aDoença de Planta
650 $aFeijão
650 $aPhaseolus Vulgaris
650 $aResistência
653 $aAndean common bean
700 1 $aGONÇALVES-VIDIGAL, M. C.
700 1 $aBISNETA, M. V.
700 1 $aVALENTINI, G.
700 1 $aVIDIGAL FILHO, P. S.
700 1 $aMARTINS, V. da S. R.
700 1 $aSOUZA, T. L. P. O. de
773 $tCrop Science, 2023.
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Embrapa Arroz e Feijão (CNPAF) |
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