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| Registros recuperados : 17 | |
| 5. |  | MISSIO, A. L.; MATTOS, B. D.; CADEMARTORI, P. H. G.; LOURENÇON, T. V.; LABIDI, J.; GATTO, D. A. The effect of oleoresin tapping on physical and chemical properties of Pinus elliottii wood. Scientia Forestalis, Piracicaba, v. 43, n. 107, p. 721-732, set. 2015.| Biblioteca(s): Embrapa Florestas. |
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| 6. | | LOURENÇON, T. V.; GONÇALVES M. R. F.; GATTO, D. A.; LABIDI, J.; SERRANO, L.; MATTOS, B. D. Efeito do encharcamento prolongado no comportamento físico-mecânico das madeiras de Corymbia citriodora e Eucalyptus grandis. Scientia Forestalis, Piracicaba, v. 43, n. 105, p. 9-18, mar. 2015.| Biblioteca(s): Embrapa Florestas. |
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| 9. | | MATTOS, B. D.; MISSIO, A. L.; CADEMARTORI, P. H. G.; LOURENÇON, T. V.; GATTO, D. A.; MAGALHAES, W. L. E. Pinewood composite prepared by in situ graft polymerization of epoxy monomer. Polymer Composites, v. 38, n. 3, p. 597-603, Mar. 2017.| Biblioteca(s): Embrapa Florestas. |
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| 11. | | SIQUEIRA, G. L. de A. de; LAZZAROTTO, S. R. da S.; HORNUNG, P. S.; LOURENÇON, T. V.; SILVEIRA, A. C. da; SCHNITZLER, E.; LAZZAROTTO, M. Effect of acid alcoholic solution in waxy maize starch treatment. In: CONGRESSO BRASILEIRO DE ANÁLISE TÉRMICA E CALORIMETRIA, 10.; CONGRESSO PAN AMERICANO DE ANÁLISE TÉRMICA E CALORIMETRIA, 4., 2016, São Paulo. Trabalhos. [S.l.]: ABRATEC, 2016. 4 p. Disponível online.| Biblioteca(s): Embrapa Florestas. |
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| 12. | | MATOS, M.; MATTOS, B. D.; CADEMARTORI, P. H. G. de; LOURENÇON, T. V.; HANSEL, F. A.; ZANONI, P. R. S.; YAMAMOTO, C. I.; MAGALHAES, W. L. E. Pilot-scaled fast-pyrolysis conversion of eucalyptus wood fines into products: discussion toward possible applications in biofuels, materials, and precursors. BioEnergy Research, v. 13, p. 411-422, 2020.| Biblioteca(s): Embrapa Florestas. |
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| 13. | | LOURENÇON, T. V.; ALAKURTII, S.; VIRTANEN, T.; JÄÄSKELÄINEN, A.-S.; LIITIÄ, T.; HUGHES, M.; MAGALHAES, W. L. E.; BOLZON DE MUNIZ, G. I.; TAMMINEN, T. Phenol-formaldehyde resins with suitable bonding strength synthesized from "less-reactive" hardwood lignin fractions. Holzforschung, v. 74, n. 2, p. 175-183, Feb. 2020.| Biblioteca(s): Embrapa Florestas. |
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| 15. | | CADEMARTORI, P. H. G. de; MATTOS, B. D.; LOURENÇON, T. V.; HARRES, A. N.; CAPOBIANCO, G.; MATOS, M. de; BOLZON DE MUNIZ, G. I.; MAGALHAES, W. L. E. Production of activated carbon from fast-pyrolysis biochar. In: INTERNATIONAL SYMPOSIUM ON WOOD, FIBRE AND PULPING CHEMISTRY, 19., 2017, Porto Seguro. Proceedings. Viçosa, MG: UFV, 2017. p. 229-232.| Biblioteca(s): Embrapa Florestas. |
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| 16. | | LOURENÇON, T. V.; LIMA, G. G. de; RIBEIRO, C. S. P.; HANSEL, F. A.; MACIEL, G. M.; SILVA, K. da; WINNISCHOFER, S. M. B.; BOLZON DE MUNIZ, G. I.; MAGALHAES, W. L. E. Antioxidant, antibacterial and antitumoural activities of kraft lignin fromhardwood fractionated by acid precipitation. International Journal of Biological Macromolecules, v. 166, p. 1535-1542, Jan. 2021.| Biblioteca(s): Embrapa Florestas. |
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| 17. | | MAGALHAES, W. L. E.; CADEMARTORI, P. H. G. de; BOLZON DE MUNIZ, G. I.; CARNEIRO, M. E.; LENGOWSKI, E. C.; MATTOS, B. D.; LOURENÇON, T. V.; VIANA, L. C.; KUMODE, M. M. N. Nanotechnology applied to forest sector: some researches at Embrapa Forestry. In: CANADA - BRAZIL WORKSHOP ON SUSTAINABLE NANOMATERIALS, 3., 2014, Belo Horizonte. General program. [S.l.]: Ministério da Ciência e Tecnologia, 2014. p. 14. Abstract.| Biblioteca(s): Embrapa Florestas. |
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| Registros recuperados : 17 | |
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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. |
Registro Completo
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
10/01/2022 |
|
Data da última atualização: |
14/02/2022 |
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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: |
LOURENÇON, T. V.; LIMA, G. G. de; RIBEIRO, C. S. P.; HANSEL, F. A.; MACIEL, G. M.; SILVA, K. da; WINNISCHOFER, S. M. B.; BOLZON DE MUNIZ, G. I.; MAGALHAES, W. L. E. |
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Afiliação: |
TAINISE V. LOURENÇON, Doutoranda da UFPR; GABRIEL G. DE LIMA, Pós-doutorando da UFPR; CAROLINA S. P. RIBEIRO, UFPR; FABRICIO AUGUSTO HANSEL, CNPF; GISELLE M. MACIEL, UFPR; KRISLE DA SILVA, CNPF; SHEILA M. B. WINNISCHOFER, UTFPR; GRACIELA I. BOLZON DE MUNIZ, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Antioxidant, antibacterial and antitumoural activities of kraft lignin fromhardwood fractionated by acid precipitation. |
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Ano de publicação: |
2021 |
|
Fonte/Imprenta: |
International Journal of Biological Macromolecules, v. 166, p. 1535-1542, Jan. 2021. |
|
DOI: |
https://doi.org/10.1016/j.ijbiomac.2020.11.033 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Kraft lignin, so far useful for energy generation, has been gathering considerable attention as an alternative ma-terial to replace fossil-based resources mainly due to its high phenolic content. However, the wide molecularweight distribution and chemical composition heterogeneity led to the development of fractionation methods.Herein, to narrow such characteristics weusedeucalypt kraft lignin fractionated atpH's 9,7, 5 and 3 bysequentialacid precipitation. These lignin fractions werefirst characterised by simultaneous pyrolysis andtrimethylsilylation (SPyT) with N-Methyl-N-(trimethylsilyl) trifluoroacetamide with posterior tests of antioxi-dant, antibacterial, and antitumour activities. We observed higher ratio of syringyl/guaiacyl groups and increasein antioxidant activity in those fractions with lower molecular weight (precipitated at lower pH's). Fractions pre-cipitated at pH's 9 and 7 have shown an outstanding antibacterial activity againstfive bacteria. Moreover, frac-tions 7 and 5 presented at cytotoxicity tests higher ability to inhibit the growth of U87MG and T98G gliomacells, while only a slight inhibition of adult humanfibroblasts (non-tumour cells) was detected. |
|
Palavras-Chave: |
Antibacterial; Antitumoral; Antitumoural; Hardwood lignin; IC50; Radical scavenging; Technical lignin. |
|
Thesagro: |
Antioxidante; Bactericida; Lignina. |
|
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
|
Marc: |
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001 2138967
005 2022-02-14
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.ijbiomac.2020.11.033$2DOI
100 1 $aLOURENÇON, T. V.
245 $aAntioxidant, antibacterial and antitumoural activities of kraft lignin fromhardwood fractionated by acid precipitation.$h[electronic resource]
260 $c2021
520 $aKraft lignin, so far useful for energy generation, has been gathering considerable attention as an alternative ma-terial to replace fossil-based resources mainly due to its high phenolic content. However, the wide molecularweight distribution and chemical composition heterogeneity led to the development of fractionation methods.Herein, to narrow such characteristics weusedeucalypt kraft lignin fractionated atpH's 9,7, 5 and 3 bysequentialacid precipitation. These lignin fractions werefirst characterised by simultaneous pyrolysis andtrimethylsilylation (SPyT) with N-Methyl-N-(trimethylsilyl) trifluoroacetamide with posterior tests of antioxi-dant, antibacterial, and antitumour activities. We observed higher ratio of syringyl/guaiacyl groups and increasein antioxidant activity in those fractions with lower molecular weight (precipitated at lower pH's). Fractions pre-cipitated at pH's 9 and 7 have shown an outstanding antibacterial activity againstfive bacteria. Moreover, frac-tions 7 and 5 presented at cytotoxicity tests higher ability to inhibit the growth of U87MG and T98G gliomacells, while only a slight inhibition of adult humanfibroblasts (non-tumour cells) was detected.
650 $aAntioxidante
650 $aBactericida
650 $aLignina
653 $aAntibacterial
653 $aAntitumoral
653 $aAntitumoural
653 $aHardwood lignin
653 $aIC50
653 $aRadical scavenging
653 $aTechnical lignin
700 1 $aLIMA, G. G. de
700 1 $aRIBEIRO, C. S. P.
700 1 $aHANSEL, F. A.
700 1 $aMACIEL, G. M.
700 1 $aSILVA, K. da
700 1 $aWINNISCHOFER, S. M. B.
700 1 $aBOLZON DE MUNIZ, G. I.
700 1 $aMAGALHAES, W. L. E.
773 $tInternational Journal of Biological Macromolecules$gv. 166, p. 1535-1542, Jan. 2021.
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