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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
07/01/2009 |
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Data da última atualização: |
22/03/2023 |
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Tipo da produção científica: |
Artigo em Anais de Congresso |
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Autoria: |
SILVA, C. M. M. de S.; CASTRO, V. L. S. S. de; OLIVEIRA, P. R.; MAIA, A. de H. N. |
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Afiliação: |
Célia Maria Maganhotto de Souza Silva, Embrapa Meio Ambiente; VERA LUCIA SCHERHOLZ S DE CASTRO, CNPMA; Pablo Roberto de Oliveira, Estagiário-Embrapa Meio Ambiente; ALINE DE HOLANDA NUNES MAIA, CNPMA. |
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Título: |
Influence of Pseudomonas putida AF7 inoculation on soil enzymes. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: EUROPEAN REMEDIATION CONFERENCE, 4., 2008, Chania, Greece. E-proceedings... Chania: Technical University of Crete, 2008. 4p. ID 259. |
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Idioma: |
Inglês |
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Conteúdo: |
Pseudomonas may use as bioremediator and as biopesticide. The use of soil enzymatic assays as biological indicator of possible negative effects in soil functioning was evaluated after P.putida AF7 inoculation. For that, AF7 was originally isolated from the rizosphere of rice and was inoculated on three soils: Rhodic Hapludox (RH), Typic Hapludox (TH); and Arenic Hapludult (AH). Soil characteristics were measured in each plot. Acid phosphatase, ?-glucosidase and protease activities were measured at 7, 14 and 21 days. The enzyme activity waved during the experimental period but there is a significant reduction of ?-glucosidase activity in RH soil on day 14. Corg was positively correlated to the activities of ?-glucosidase and protease. The presented data indicate that soil biochemical properties may be useful as indicator of soil perturbations. |
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Palavras-Chave: |
Bioremediação. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/145737/1/2008AA-102.pdf
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Marc: |
LEADER 01431nam a2200157 a 4500
001 1016083
005 2023-03-22
008 2008 bl uuuu u00u1 u #d
100 1 $aSILVA, C. M. M. de S.
245 $aInfluence of Pseudomonas putida AF7 inoculation on soil enzymes.$h[electronic resource]
260 $aIn: EUROPEAN REMEDIATION CONFERENCE, 4., 2008, Chania, Greece. E-proceedings... Chania: Technical University of Crete, 2008. 4p. ID 259.$c2008
520 $aPseudomonas may use as bioremediator and as biopesticide. The use of soil enzymatic assays as biological indicator of possible negative effects in soil functioning was evaluated after P.putida AF7 inoculation. For that, AF7 was originally isolated from the rizosphere of rice and was inoculated on three soils: Rhodic Hapludox (RH), Typic Hapludox (TH); and Arenic Hapludult (AH). Soil characteristics were measured in each plot. Acid phosphatase, ?-glucosidase and protease activities were measured at 7, 14 and 21 days. The enzyme activity waved during the experimental period but there is a significant reduction of ?-glucosidase activity in RH soil on day 14. Corg was positively correlated to the activities of ?-glucosidase and protease. The presented data indicate that soil biochemical properties may be useful as indicator of soil perturbations.
653 $aBioremediação
700 1 $aCASTRO, V. L. S. S. de
700 1 $aOLIVEIRA, P. R.
700 1 $aMAIA, A. de H. N.
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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Cutter |
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Volume |
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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
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
01/10/2015 |
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Data da última atualização: |
29/01/2018 |
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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.; HANSEL, F. A.; SILVA, T. A. da; RAMOS, L. P.; BOLZON DE MUNIZ, G. I.; MAGALHAES, W. L. E. |
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Afiliação: |
TAINISE V. LOURENÇON, Doutoranda UFPR; FABRICIO AUGUSTO HANSEL, CNPF; THIAGO A. DA SILVA, UFPR; LUIZ P. RAMOS, UFPR; GRACIELA I. BOLZON DE MUNIZ, UFPR; WASHINGTON LUIZ ESTEVES MAGALHAES, CNPF. |
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Título: |
Hardwood and softwood kraft lignins fractionation by simple sequential acid precipitation. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Separation and Purification Technology, v. 154, p. 82-88, Nov. 2015. |
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DOI: |
http://dx.doi.org/10.1016/j.seppur.2015.09.015 |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed at the fractionation of lignin by a simple acid precipitation from hardwood and softwood Kraft black liquors to propose new value-added applications. The precipitation was made sequentially by acidification at five different pHs (9, 7, 5, 3 and 1). The different lignin fractions were analyzed in terms of yield, ash content, elemental analysis, thermal analysis, FTIR, 1H NMR and GPC. Hardwood lignins showed distinct relative molecular mass distributions, while softwood lignins showed similar relative molecular mass distributions in the three fractions obtained at higher pHs (pH 9, 7 and 5). This simple acid precipitation was shown to be an effective method to obtain relatively high yields of lignin. Molecular characterization by FTIR (carbonyl band) indicated that hardwood lignin was most oxidized mainly in the low pH fractions (5, 3 and 1), while the softwood lignin only presented discrete oxidized products in the lowest pHs (3 and 1). Interestingly, precipitation at pH 3 produced ash-free hardwood and softwood lignin fractions, which is a valuable product for the development of better end uses. |
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Thesagro: |
Eucalipto; Lignina; Madeira. |
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Thesaurus NAL: |
Pinus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01868naa a2200241 a 4500
001 2025645
005 2018-01-29
008 2015 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1016/j.seppur.2015.09.015$2DOI
100 1 $aLOURENÇON, T. V.
245 $aHardwood and softwood kraft lignins fractionation by simple sequential acid precipitation.$h[electronic resource]
260 $c2015
520 $aThis study aimed at the fractionation of lignin by a simple acid precipitation from hardwood and softwood Kraft black liquors to propose new value-added applications. The precipitation was made sequentially by acidification at five different pHs (9, 7, 5, 3 and 1). The different lignin fractions were analyzed in terms of yield, ash content, elemental analysis, thermal analysis, FTIR, 1H NMR and GPC. Hardwood lignins showed distinct relative molecular mass distributions, while softwood lignins showed similar relative molecular mass distributions in the three fractions obtained at higher pHs (pH 9, 7 and 5). This simple acid precipitation was shown to be an effective method to obtain relatively high yields of lignin. Molecular characterization by FTIR (carbonyl band) indicated that hardwood lignin was most oxidized mainly in the low pH fractions (5, 3 and 1), while the softwood lignin only presented discrete oxidized products in the lowest pHs (3 and 1). Interestingly, precipitation at pH 3 produced ash-free hardwood and softwood lignin fractions, which is a valuable product for the development of better end uses.
650 $aPinus
650 $aEucalipto
650 $aLignina
650 $aMadeira
700 1 $aHANSEL, F. A.
700 1 $aSILVA, T. A. da
700 1 $aRAMOS, L. P.
700 1 $aBOLZON DE MUNIZ, G. I.
700 1 $aMAGALHAES, W. L. E.
773 $tSeparation and Purification Technology$gv. 154, p. 82-88, Nov. 2015.
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Embrapa Florestas (CNPF) |
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